diff --git a/components/email/__tests__/composer-a11y.test.tsx b/components/email/__tests__/composer-a11y.test.tsx
index 3a9d3f39f..e69492e89 100644
--- a/components/email/__tests__/composer-a11y.test.tsx
+++ b/components/email/__tests__/composer-a11y.test.tsx
@@ -49,6 +49,8 @@ const settings = vi.hoisted(() => ({
   emptySubjectWarningEnabled: false,
   sendDelaySeconds: 0,
   signaturePosition: 'below_quote',
+  signatureNewMailEnabled: true,
+  signatureReplyForwardEnabled: true,
   signatureSeparatorEnabled: false,
   requestReadReceiptDefault: false,
   sendConfirmation: false,
diff --git a/components/email/__tests__/composer-format-toggle.test.tsx b/components/email/__tests__/composer-format-toggle.test.tsx
index 28f3f029c..5df61c004 100644
--- a/components/email/__tests__/composer-format-toggle.test.tsx
+++ b/components/email/__tests__/composer-format-toggle.test.tsx
@@ -95,6 +95,8 @@ vi.mock('@/stores/settings-store', () => {
     // The default position: replies/forwards get the signature appended at
     // send time rather than embedded above the quote.
     signaturePosition: 'below_quote',
+    signatureNewMailEnabled: true,
+    signatureReplyForwardEnabled: true,
     signatureSeparatorEnabled: true,
     requestReadReceiptDefault: false,
     addTrustedSender: () => {},
diff --git a/components/email/__tests__/composer-from-override-envelope.test.tsx b/components/email/__tests__/composer-from-override-envelope.test.tsx
index e8cd2f9f6..c6d39338e 100644
--- a/components/email/__tests__/composer-from-override-envelope.test.tsx
+++ b/components/email/__tests__/composer-from-override-envelope.test.tsx
@@ -95,6 +95,8 @@ vi.mock('@/stores/settings-store', () => {
     // The default position: replies/forwards get the signature appended at
     // send time rather than embedded above the quote.
     signaturePosition: 'below_quote',
+    signatureNewMailEnabled: true,
+    signatureReplyForwardEnabled: true,
     signatureSeparatorEnabled: true,
     requestReadReceiptDefault: false,
     addTrustedSender: () => {},
diff --git a/components/email/__tests__/composer-identity-signature.test.tsx b/components/email/__tests__/composer-identity-signature.test.tsx
index 84a6c3a98..b0d9a0093 100644
--- a/components/email/__tests__/composer-identity-signature.test.tsx
+++ b/components/email/__tests__/composer-identity-signature.test.tsx
@@ -95,6 +95,8 @@ vi.mock('@/stores/settings-store', () => {
     // The default position: replies/forwards get the signature appended at
     // send time rather than embedded above the quote.
     signaturePosition: 'below_quote',
+    signatureNewMailEnabled: true,
+    signatureReplyForwardEnabled: true,
     signatureSeparatorEnabled: true,
     requestReadReceiptDefault: false,
     addTrustedSender: () => {},
@@ -257,3 +259,40 @@ describe('composer signature follows the picked identity', () => {
     expect(sent.body).toBe('Plain draft');
   });
 });
+
+describe('signature auto-insert toggles', () => {
+  afterEach(() => {
+    useSettingsStore.setState({
+      plainTextMode: false,
+      signatureNewMailEnabled: true,
+      signatureReplyForwardEnabled: true,
+    });
+    vi.clearAllMocks();
+  });
+
+  it('keeps a new message free of the signature when the new-mail toggle is off', async () => {
+    useSettingsStore.setState({ plainTextMode: true, signatureNewMailEnabled: false });
+    const onSend = vi.fn();
+    render(<EmailComposer initialData={{ ...DRAFT, body: 'Draft text' }} onSend={onSend} />);
+
+    // Not embedded into the editable body…
+    await waitFor(() => expect(textarea().value).toBe('Draft text'));
+    // …and not appended at send time either.
+    const sent = await send(onSend);
+    expect(sent.body).toBe('Draft text');
+  });
+
+  it('sends a reply without appending the signature when the reply toggle is off', async () => {
+    useSettingsStore.setState({ signatureReplyForwardEnabled: false });
+    const onSend = vi.fn();
+    render(<EmailComposer mode="reply" initialData={{ ...DRAFT, mode: 'reply' }} onSend={onSend} />);
+
+    // No read-only signature preview under the editor: it would promise a
+    // signature that never goes out.
+    expect(document.body.textContent).not.toContain('Alice');
+
+    const sent = await send(onSend);
+    expect(sent.htmlBody).not.toContain('Alice');
+    expect(sent.body).not.toContain('Alice');
+  });
+});
diff --git a/components/email/__tests__/composer-org-signature.test.tsx b/components/email/__tests__/composer-org-signature.test.tsx
index e6e76afa0..ee494c68f 100644
--- a/components/email/__tests__/composer-org-signature.test.tsx
+++ b/components/email/__tests__/composer-org-signature.test.tsx
@@ -136,6 +136,8 @@ vi.mock('@/stores/settings-store', () => {
     // The default position: replies/forwards get the signature appended at
     // send time rather than embedded above the quote.
     signaturePosition: 'below_quote',
+    signatureNewMailEnabled: true,
+    signatureReplyForwardEnabled: true,
     signatureSeparatorEnabled: true,
     requestReadReceiptDefault: false,
     addTrustedSender: () => {},
diff --git a/components/email/__tests__/composer-reopened-draft-signature.test.tsx b/components/email/__tests__/composer-reopened-draft-signature.test.tsx
index 3ddd45a2f..9e8aae0f9 100644
--- a/components/email/__tests__/composer-reopened-draft-signature.test.tsx
+++ b/components/email/__tests__/composer-reopened-draft-signature.test.tsx
@@ -96,6 +96,8 @@ vi.mock('@/stores/settings-store', () => {
     // The default position: replies/forwards get the signature appended at
     // send time rather than embedded above the quote.
     signaturePosition: 'below_quote',
+    signatureNewMailEnabled: true,
+    signatureReplyForwardEnabled: true,
     signatureSeparatorEnabled: true,
     requestReadReceiptDefault: false,
     addTrustedSender: () => {},
diff --git a/components/email/__tests__/composer-reply-signature.test.tsx b/components/email/__tests__/composer-reply-signature.test.tsx
index fa15f205c..2198cec74 100644
--- a/components/email/__tests__/composer-reply-signature.test.tsx
+++ b/components/email/__tests__/composer-reply-signature.test.tsx
@@ -123,6 +123,8 @@ vi.mock('@/stores/settings-store', () => {
     // The default position: replies/forwards get the signature appended at
     // send time rather than embedded above the quote.
     signaturePosition: 'below_quote',
+    signatureNewMailEnabled: true,
+    signatureReplyForwardEnabled: true,
     signatureSeparatorEnabled: true,
     requestReadReceiptDefault: false,
     addTrustedSender: () => {},
diff --git a/components/email/__tests__/composer-template-reply.test.tsx b/components/email/__tests__/composer-template-reply.test.tsx
index f804dde67..44ee3ff12 100644
--- a/components/email/__tests__/composer-template-reply.test.tsx
+++ b/components/email/__tests__/composer-template-reply.test.tsx
@@ -107,6 +107,8 @@ vi.mock('@/stores/settings-store', () => {
     recipientMentionsEnabled: false,
     sendDelaySeconds: 0,
     signaturePosition: 'above_quote',
+    signatureNewMailEnabled: true,
+    signatureReplyForwardEnabled: true,
     signatureSeparatorEnabled: false,
     requestReadReceiptDefault: false,
     externalContentPolicy: 'block',
diff --git a/components/email/email-composer.tsx b/components/email/email-composer.tsx
index 228b95437..7029a5bdf 100644
--- a/components/email/email-composer.tsx
+++ b/components/email/email-composer.tsx
@@ -547,6 +547,13 @@ export function EmailComposer({
   const updateSetting = useSettingsStore((state) => state.updateSetting);
   const sendDelaySeconds = useSettingsStore((state) => state.sendDelaySeconds);
   const signaturePosition = useSettingsStore((state) => state.signaturePosition);
+  const signatureNewMailEnabled = useSettingsStore((state) => state.signatureNewMailEnabled);
+  const signatureReplyForwardEnabled = useSettingsStore((state) => state.signatureReplyForwardEnabled);
+  // Whether automatic signature insertion is on for this composer mode: new
+  // mail (and re-opened drafts, which open in compose mode) follow the
+  // new-mail toggle, replies and forwards the reply/forward one. What the
+  // body already carries is never stripped - only the insert/append is gated.
+  const autoSignatureEnabled = mode === 'compose' ? signatureNewMailEnabled : signatureReplyForwardEnabled;
   const signatureSeparatorEnabled = useSettingsStore((state) => state.signatureSeparatorEnabled);
   const requestReadReceiptDefault = useSettingsStore((state) => state.requestReadReceiptDefault);
   // A draft belongs to the account the composer was opened in. Switching
@@ -622,12 +629,13 @@ export function EmailComposer({
   const shouldEmbedSignatureAboveQuote =
     (mode === 'reply' || mode === 'replyAll' || mode === 'forward') &&
     signaturePosition === 'above_quote' &&
+    signatureReplyForwardEnabled &&
     hasInitialSignature;
   // New-mail composes always embed the signature into the editor body so it's
   // editable/removable (the previous read-only preview below the editor was
   // never spec-correct - see #329). Compose mode also ignores any leftover
   // `replyTo` from a still-selected email; getInitialBody short-circuits below.
-  const shouldEmbedSignatureInNewMail = mode === 'compose' && hasInitialSignature;
+  const shouldEmbedSignatureInNewMail = mode === 'compose' && signatureNewMailEnabled && hasInitialSignature;
 
   // Format a single EmailAddress for display in the composer input
   const toRecipient = (r: { name?: string; email?: string }): Recipient =>
@@ -1320,6 +1328,9 @@ export function EmailComposer({
     const isReplyLike = mode === 'reply' || mode === 'replyAll' || mode === 'forward';
     if (!isReplyLike && mode !== 'compose') return;
     if (isReplyLike && signaturePosition !== 'above_quote') return;
+    // With automatic insertion off the body never got a signature spliced
+    // in, so there is nothing to swap.
+    if (!autoSignatureEnabled) return;
 
     if (plainTextMode) {
       // A new plain-text message carries the signature at the end of the
@@ -1361,7 +1372,7 @@ export function EmailComposer({
     // would re-run on unrelated identity-field changes and re-splice the
     // signature into the live editor.
     // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [signatureIdentity?.id, signatureContent, signatureSeparatorEnabled, signaturePosition, mode, plainTextMode, pluginSignatureRevision]);
+  }, [signatureIdentity?.id, signatureContent, signatureSeparatorEnabled, signaturePosition, mode, plainTextMode, pluginSignatureRevision, autoSignatureEnabled]);
 
   const openScheduleDialog = useCallback(() => {
     setShowScheduleDialog(true);
@@ -2663,7 +2674,7 @@ export function EmailComposer({
     // below the editor - was saved without it (#823). Embed the *marked-up*
     // form so re-opening the draft round-trips the signature as one block and
     // signatureAlreadyInBody sees it instead of appending a second copy.
-    const draftSignatureHtml = signatureAlreadyInBody
+    const draftSignatureHtml = signatureAlreadyInBody || !autoSignatureEnabled
       ? ''
       : buildEmbeddedSignatureHtml(signatureIdentity, {
           embed: true,
@@ -2671,7 +2682,7 @@ export function EmailComposer({
         });
     const draftHtmlBody = plainTextMode ? undefined : `${body}${draftSignatureHtml}`;
     const draftTextBody = plainTextMode
-      ? (signatureAlreadyInBody
+      ? (signatureAlreadyInBody || !autoSignatureEnabled
           ? body
           : appendPlainTextSignature(body, signatureIdentity, { separator: signatureSeparatorEnabled }))
       : htmlToPlainText(draftHtmlBody!, imageAltText);
@@ -3608,9 +3619,14 @@ export function EmailComposer({
     // above-quote replies, a re-opened draft) `signatureAlreadyInBody` is set
     // and the trailing append below is skipped so we don't duplicate it.
 
+    // Whether automatic signature insertion is on for this composer mode
+    // (component-level `autoSignatureEnabled` - see signatureAlreadyInBody).
+    // What the body already carries is never stripped - only the append is
+    // gated.
+
     // Build HTML signature block (used only in rich text mode)
     const buildSignatureHtml = (): string => {
-      if (signatureAlreadyInBody) return '';
+      if (signatureAlreadyInBody || !autoSignatureEnabled) return '';
       const sep = wantsSignatureSeparator(signatureSeparatorEnabled, signatureIdentity) ? `<br><br>-- <br>` : `<br><br>`;
       if (signatureIdentity?.htmlSignature) {
         return `${sep}${sanitizeSignatureHtml(signatureIdentity.htmlSignature)}`;
@@ -3627,8 +3643,8 @@ export function EmailComposer({
     // In plain text mode, send text/plain only (no HTML body)
     const signatureOpts = { separator: signatureSeparatorEnabled };
     const builtTextBody = plainTextMode
-      ? (signatureAlreadyInBody ? body : appendPlainTextSignature(body, signatureIdentity, signatureOpts))
-      : (signatureAlreadyInBody ? htmlToPlainText(body, imageAltText) : appendPlainTextSignature(htmlToPlainText(body, imageAltText), signatureIdentity, signatureOpts));
+      ? (signatureAlreadyInBody || !autoSignatureEnabled ? body : appendPlainTextSignature(body, signatureIdentity, signatureOpts))
+      : (signatureAlreadyInBody || !autoSignatureEnabled ? htmlToPlainText(body, imageAltText) : appendPlainTextSignature(htmlToPlainText(body, imageAltText), signatureIdentity, signatureOpts));
 
     // Before any blobId is read: forwarded parts may still sit on the account
     // that holds the original message.
@@ -4780,8 +4796,10 @@ export function EmailComposer({
 
         {/* Hide the visual signature preview when the signature has already been
             embedded into the body (compose, above-quote replies, re-opened
-            drafts) - it would otherwise read as a second signature. */}
-        {signatureAlreadyInBody ? null
+            drafts) - it would otherwise read as a second signature. Also when
+            automatic insertion is off: nothing will be appended at send time,
+            so a preview would promise a signature that never goes out. */}
+        {signatureAlreadyInBody || !autoSignatureEnabled ? null
           : plainTextMode ? (
           getPlainTextSignature(signatureIdentity) ? (
             <div className="px-4 pb-3 text-sm leading-6 text-muted-foreground break-words whitespace-pre-wrap font-mono">
diff --git a/components/mail/mail-app.tsx b/components/mail/mail-app.tsx
index d395a97d0..4c82d1f4a 100644
--- a/components/mail/mail-app.tsx
+++ b/components/mail/mail-app.tsx
@@ -4140,6 +4140,8 @@ export function MailApp({ linkSegments: routeSegments }: MailAppProps = {}) {
       signatureIdentity,
       sendingIdentity,
       separator: settings.signatureSeparatorEnabled,
+      // The user's reply/forward signature toggle: off sends the bare text.
+      insertSignature: settings.signatureReplyForwardEnabled,
       to: recipients,
       fromEmail: headerFromEmail,
       identityId: sendingIdentity?.id,
diff --git a/components/settings/composing-settings.tsx b/components/settings/composing-settings.tsx
index becf7296b..a4227d6f8 100644
--- a/components/settings/composing-settings.tsx
+++ b/components/settings/composing-settings.tsx
@@ -36,6 +36,8 @@ export function ComposingSettings() {
     mentionAddsRecipientTo,
     sendDelaySeconds,
     signaturePosition,
+    signatureNewMailEnabled,
+    signatureReplyForwardEnabled,
     signatureSeparatorEnabled,
     requestReadReceiptDefault,
     readReceiptResponse,
@@ -124,6 +126,20 @@ export function ComposingSettings() {
           />
         </SettingItem>
 
+        <SettingItem label={t('signature_new_mail.label')} description={t('signature_new_mail.description')}>
+          <ToggleSwitch
+            checked={signatureNewMailEnabled}
+            onChange={(checked) => updateSetting('signatureNewMailEnabled', checked)}
+          />
+        </SettingItem>
+
+        <SettingItem label={t('signature_reply_forward.label')} description={t('signature_reply_forward.description')}>
+          <ToggleSwitch
+            checked={signatureReplyForwardEnabled}
+            onChange={(checked) => updateSetting('signatureReplyForwardEnabled', checked)}
+          />
+        </SettingItem>
+
         <SettingItem advanced label={t('signature_separator.label')} description={t('signature_separator.description')}>
           <ToggleSwitch
             checked={signatureSeparatorEnabled}
diff --git a/lib/__tests__/settings-search.test.ts b/lib/__tests__/settings-search.test.ts
index 94d83011a..c4728bd46 100644
--- a/lib/__tests__/settings-search.test.ts
+++ b/lib/__tests__/settings-search.test.ts
@@ -77,6 +77,12 @@ describe('settings search index (English messages)', () => {
     expect(resultsFor('composing', 'reply signature').map((r) => r.label)).toContain('Signature position');
   });
 
+  it('finds the newer signature settings on their tabs', () => {
+    expect(labelsFor('composing')).toContain('Signature on new mail');
+    expect(labelsFor('composing')).toContain('Signature on replies & forwards');
+    expect(labelsFor('composing')).toContain('Undo send / send delay');
+  });
+
   it('marks the rows the Advanced switch hides', () => {
     const advanced = settingsSubResults(en, 'message_list', 'Bulwark').filter((r) => r.advanced).map((r) => r.label);
     expect(advanced).toContain('Emails per page');
diff --git a/lib/outgoing/__tests__/quick-reply.test.ts b/lib/outgoing/__tests__/quick-reply.test.ts
index 3ff01cb8d..e8b6e9d8a 100644
--- a/lib/outgoing/__tests__/quick-reply.test.ts
+++ b/lib/outgoing/__tests__/quick-reply.test.ts
@@ -33,6 +33,14 @@ describe('prepareQuickReply', () => {
     expect(plain?.text).toMatch(/Thanks <3[\s\S]*-- \nMe$/);
   });
 
+  it('sends the bare text when the reply signature toggle is off', async () => {
+    const withHtml = await prepareQuickReply({ ...input(html), insertSignature: false });
+    expect(withHtml?.html).toBeUndefined();
+    expect(withHtml?.text).toBe('Thanks <3');
+    const plain = await prepareQuickReply({ ...input(text), insertSignature: false });
+    expect(plain?.text).toBe('Thanks <3');
+  });
+
   it('runs the finalisers with a reply context', async () => {
     const contexts: unknown[] = [];
     registerOutgoingFinalizer('f', 10, (bodies, context) => {
diff --git a/lib/outgoing/quick-reply.ts b/lib/outgoing/quick-reply.ts
index 142022ddf..fc9104eac 100644
--- a/lib/outgoing/quick-reply.ts
+++ b/lib/outgoing/quick-reply.ts
@@ -35,12 +35,19 @@ export interface QuickReplyQuestions {
  * (onBeforeEmailSend) run on it too, after the organisation signature and
  * before the disclaimer, as in the composer; `onSendCheckStopped` hears
  * why one stopped it.
+ *
+ * `insertSignature` is the user's reply/forward signature toggle: false
+ * sends the bare typed text, with no signature of the user's own. The
+ * organisation signature and disclaimer still apply - they are policy,
+ * not the user's choice.
  */
 export async function prepareQuickReply(input: {
   body: string;
   signatureIdentity: Identity | null | undefined;
   sendingIdentity?: Identity | null;
   separator: boolean;
+  /** The user's signature auto-insert toggle for replies/forwards. */
+  insertSignature?: boolean;
   to: string[];
   fromEmail?: string;
   identityId?: string;
@@ -66,7 +73,10 @@ export async function prepareQuickReply(input: {
   }
 
   const signatureIdentity = currentSignatureIdentity(input.signatureIdentity, input.sendingIdentity ?? undefined);
-  const text = appendPlainTextSignature(body, signatureIdentity, { separator });
+  const insertSignature = input.insertSignature !== false;
+  const text = insertSignature
+    ? appendPlainTextSignature(body, signatureIdentity, { separator })
+    : body;
 
   // When the identity has an HTML signature, send a matching HTML body so the
   // signature keeps its formatting; appendPlainTextSignature would otherwise
@@ -77,7 +87,7 @@ export async function prepareQuickReply(input: {
     .replace(/</g, '&lt;')
     .replace(/>/g, '&gt;')
     .replace(/\n/g, '<br>');
-  const html = signatureIdentity?.htmlSignature?.trim()
+  const html = insertSignature && signatureIdentity?.htmlSignature?.trim()
     ? appendHtmlSignature(`<div>${escapedBody}</div>`, signatureIdentity, { separator })
     : undefined;
 
diff --git a/lib/settings-search.ts b/lib/settings-search.ts
index d85ac11bf..3c14bbc11 100644
--- a/lib/settings-search.ts
+++ b/lib/settings-search.ts
@@ -247,6 +247,8 @@ export const tabSearchEntries: Record<Tab, SettingsSearchEntry[]> = {
     { label: 'settings.email_behavior.quick_reply.label' },
     { label: 'settings.email_behavior.auto_select_reply_identity.label' },
     { label: 'settings.email_behavior.signature_position.label' },
+    { label: 'settings.email_behavior.signature_new_mail.label' },
+    { label: 'settings.email_behavior.signature_reply_forward.label' },
     { label: 'settings.email_behavior.signature_separator.label', advanced: true },
     { label: 'settings.composing_page.sections.sending' },
     { label: 'settings.email_behavior.send_delay.label' },
diff --git a/locales/ar/common.json b/locales/ar/common.json
index b4e83bbc1..5add8df78 100644
--- a/locales/ar/common.json
+++ b/locales/ar/common.json
@@ -1952,6 +1952,14 @@
         "above_quote": "قبل النص المقتبس",
         "below_quote": "بعد النص المقتبس"
       },
+      "signature_new_mail": {
+        "label": "التوقيع في الرسائل الجديدة",
+        "description": "يُدرج توقيعك تلقائيًا عند كتابة رسالة جديدة. عطّله لبدء كل رسالة جديدة دون توقيع."
+      },
+      "signature_reply_forward": {
+        "label": "التوقيع في الردود وإعادة التوجيه",
+        "description": "يُرفق توقيعك تلقائيًا عند الرد على رسالة أو إعادة توجيهها. عطّله لإرسالها دون توقيع."
+      },
       "signature_separator": {
         "label": "فاصل التوقيع",
         "description": "إضافة السطر الفاصل القياسي \"-- \" قبل التوقيع (RFC 3676). عطّله إذا كنت تفضّل الانتقال مباشرة من رسالتك إلى التوقيع."
diff --git a/locales/ca/common.json b/locales/ca/common.json
index 0a2460822..4611e3085 100644
--- a/locales/ca/common.json
+++ b/locales/ca/common.json
@@ -1952,6 +1952,14 @@
         "above_quote": "Abans del text citat",
         "below_quote": "Després del text citat"
       },
+      "signature_new_mail": {
+        "label": "Signatura als correus nous",
+        "description": "Insereix automàticament la teva signatura en redactar un missatge nou. Desactiva-ho per començar cada missatge nou sense ella."
+      },
+      "signature_reply_forward": {
+        "label": "Signatura en respostes i reenviaments",
+        "description": "Afegeix automàticament la teva signatura en respondre o reenviar un missatge. Desactiva-ho per enviar-los sense ella."
+      },
       "signature_separator": {
         "label": "Delimitador de la signatura",
         "description": "Prefixa la signatura amb la línia delimitadora estàndard «-- » (RFC 3676). Desactiveu-ho si preferiu passar directament del missatge a la signatura."
diff --git a/locales/cs/common.json b/locales/cs/common.json
index cf460ede0..3bf1f764d 100644
--- a/locales/cs/common.json
+++ b/locales/cs/common.json
@@ -1949,6 +1949,14 @@
         "above_quote": "Před citovaným textem",
         "below_quote": "Za citovaným textem"
       },
+      "signature_new_mail": {
+        "label": "Podpis u nových zpráv",
+        "description": "Při psaní nové zprávy automaticky vloží váš podpis. Vypněte, pokud chcete každou novou zprávu začínat bez podpisu."
+      },
+      "signature_reply_forward": {
+        "label": "Podpis u odpovědí a přeposílání",
+        "description": "Při odpovídání nebo přeposílání automaticky připojí váš podpis. Vypněte, pokud je chcete odesílat bez podpisu."
+      },
       "signature_separator": {
         "label": "Oddělovač podpisu",
         "description": "Před podpis přidat standardní oddělovací řádek \"-- \" (RFC 3676). Vypněte, pokud chcete plynule přejít z textu zprávy do podpisu."
diff --git a/locales/da/common.json b/locales/da/common.json
index 23696428d..f51a9e084 100644
--- a/locales/da/common.json
+++ b/locales/da/common.json
@@ -1952,6 +1952,14 @@
         "above_quote": "Før citeret tekst",
         "below_quote": "Efter citeret tekst"
       },
+      "signature_new_mail": {
+        "label": "Signatur på nye e-mails",
+        "description": "Indsætter automatisk din signatur, når du skriver en ny besked. Slå fra for at starte hver ny besked uden."
+      },
+      "signature_reply_forward": {
+        "label": "Signatur på svar og videresendelser",
+        "description": "Tilføjer automatisk din signatur, når du svarer eller videresender. Slå fra for at sende dem uden."
+      },
       "signature_separator": {
         "label": "Signatur-afgrænser",
         "description": "Præfiksér signaturen med standard \"-- \"-afgrænserlinjen (RFC 3676). Slå fra, hvis du hellere vil gå direkte fra din besked til signaturen."
diff --git a/locales/de/common.json b/locales/de/common.json
index f54369bf5..f563c4e36 100644
--- a/locales/de/common.json
+++ b/locales/de/common.json
@@ -1949,6 +1949,14 @@
         "above_quote": "Vor zitiertem Text",
         "below_quote": "Nach zitiertem Text"
       },
+      "signature_new_mail": {
+        "label": "Signatur bei neuen E-Mails",
+        "description": "Fügt die Signatur beim Verfassen einer neuen Nachricht automatisch ein. Ausschalten, um jede neue Nachricht ohne Signatur zu beginnen."
+      },
+      "signature_reply_forward": {
+        "label": "Signatur bei Antworten und Weiterleitungen",
+        "description": "Hängt die Signatur beim Antworten oder Weiterleiten automatisch an. Ausschalten, um sie ohne Signatur zu senden."
+      },
       "signature_separator": {
         "label": "Signatur-Trenner",
         "description": "Der Signatur die Standard-Trennerzeile \"-- \" voranstellen (RFC 3676). Deaktivieren, wenn der Nachrichtentext direkt in die Signatur übergehen soll."
diff --git a/locales/en/common.json b/locales/en/common.json
index 2fea41def..299735960 100644
--- a/locales/en/common.json
+++ b/locales/en/common.json
@@ -1952,6 +1952,14 @@
         "above_quote": "Before quoted text",
         "below_quote": "After quoted text"
       },
+      "signature_new_mail": {
+        "label": "Signature on new mail",
+        "description": "Automatically insert your signature when composing a new message. Turn off to start every new message without one."
+      },
+      "signature_reply_forward": {
+        "label": "Signature on replies & forwards",
+        "description": "Automatically append your signature when replying to or forwarding a message. Turn off to send them without one."
+      },
       "signature_separator": {
         "label": "Signature delimiter",
         "description": "Prefix the signature with the standard \"-- \" delimiter line (RFC 3676). Turn off if you'd rather flow straight from your message into the signature."
diff --git a/locales/es/common.json b/locales/es/common.json
index 40572da71..767f69e2d 100644
--- a/locales/es/common.json
+++ b/locales/es/common.json
@@ -1940,6 +1940,14 @@
         "above_quote": "Antes del texto citado",
         "below_quote": "Después del texto citado"
       },
+      "signature_new_mail": {
+        "label": "Firma en correos nuevos",
+        "description": "Inserta automáticamente tu firma al redactar un mensaje nuevo. Desactívalo para empezar cada mensaje nuevo sin ella."
+      },
+      "signature_reply_forward": {
+        "label": "Firma en respuestas y reenvíos",
+        "description": "Añade automáticamente tu firma al responder o reenviar un mensaje. Desactívalo para enviarlos sin ella."
+      },
       "signature_separator": {
         "label": "Delimitador de firma",
         "description": "Anteponer a la firma la línea delimitadora estándar \"-- \" (RFC 3676). Desactiva si prefieres pasar directamente del mensaje a la firma."
diff --git a/locales/et/common.json b/locales/et/common.json
index bfafac30f..58d7e1450 100644
--- a/locales/et/common.json
+++ b/locales/et/common.json
@@ -1952,6 +1952,14 @@
         "above_quote": "Enne tsiteeritud teksti",
         "below_quote": "Pärast tsiteeritud teksti"
       },
+      "signature_new_mail": {
+        "label": "Allkirja uutes kirjades",
+        "description": "Sisestab allkirja automaatselt uue kirja koostamisel. Lülita välja, et iga uus kiri algaks ilma allkirjata."
+      },
+      "signature_reply_forward": {
+        "label": "Allkirja vastamisel ja edastamisel",
+        "description": "Lisab allkirja automaatselt vastamisel või kirja edastamisel. Lülita välja, et saata need ilma allkirjata."
+      },
       "signature_separator": {
         "label": "Allkirja eraldaja",
         "description": "Lisa allkirja ette standardne „-- “ eraldusrida (RFC 3676). Lülita välja, kui eelistad, et kiri sulandub otse allkirjaga."
diff --git a/locales/fa/common.json b/locales/fa/common.json
index 7318d61d9..c81ae6376 100644
--- a/locales/fa/common.json
+++ b/locales/fa/common.json
@@ -1952,6 +1952,14 @@
         "above_quote": "قبل از نقل قول",
         "below_quote": "بعد از نقل قول"
       },
+      "signature_new_mail": {
+        "label": "امضا در نامه‌های جدید",
+        "description": "هنگام نوشتن نامه جدید، امضای شما به‌طور خودکار درج می‌شود. برای شروع هر نامه جدید بدون امضا، خاموش کنید."
+      },
+      "signature_reply_forward": {
+        "label": "امضا در پاسخ و ارجاع",
+        "description": "هنگام پاسخ دادن یا ارجاع دادن نامه، امضای شما به‌طور خودکار افزوده می‌شود. برای ارسال بدون امضا، خاموش کنید."
+      },
       "signature_separator": {
         "label": "جداکننده امضا",
         "description": "پیشوند \"-- \""
diff --git a/locales/fr/common.json b/locales/fr/common.json
index 4cbef611a..5e5216f2d 100644
--- a/locales/fr/common.json
+++ b/locales/fr/common.json
@@ -1940,6 +1940,14 @@
         "above_quote": "Avant le texte cité",
         "below_quote": "Après le texte cité"
       },
+      "signature_new_mail": {
+        "label": "Signature sur les nouveaux messages",
+        "description": "Insère automatiquement votre signature lors de la rédaction d'un nouveau message. Désactivez pour rédiger sans signature."
+      },
+      "signature_reply_forward": {
+        "label": "Signature sur les réponses et transferts",
+        "description": "Ajoute automatiquement votre signature lors d'une réponse ou d'un transfert. Désactivez pour les envoyer sans signature."
+      },
       "signature_separator": {
         "label": "Délimiteur de signature",
         "description": "Préfixer la signature par la ligne de délimitation standard \"-- \" (RFC 3676). Désactivez si vous préférez enchaîner directement du message à la signature."
diff --git a/locales/he/common.json b/locales/he/common.json
index a0b3debc5..2080eb871 100644
--- a/locales/he/common.json
+++ b/locales/he/common.json
@@ -1996,6 +1996,14 @@
         "above_quote": "לפני טקסט מצוטט",
         "below_quote": "אחרי טקסט מצוטט"
       },
+      "signature_new_mail": {
+        "label": "חתימה בהודעות חדשות",
+        "description": "מוסיף אוטומטית את החתימה שלך בעת כתיבת הודעה חדשה. כבה כדי להתחיל כל הודעה חדשה בלי חתימה."
+      },
+      "signature_reply_forward": {
+        "label": "חתימה בתשובות והעברות",
+        "description": "מצרף אוטומטית את החתימה שלך בעת מענה או העברה של הודעה. כבה כדי לשלוח אותן בלי חתימה."
+      },
       "signature_separator": {
         "label": "מפריד חתימה",
         "description": "הוסף קידומת לחתימה בעדכון סטנדרטי ״-- ״ (RFC 3676). כבה אם אתה מעדיף לזרום ישירות מההודעה שלך לחתימה."
diff --git a/locales/hu/common.json b/locales/hu/common.json
index be3994d84..d60c631bb 100644
--- a/locales/hu/common.json
+++ b/locales/hu/common.json
@@ -1952,6 +1952,14 @@
         "above_quote": "Idézett szöveg előtt",
         "below_quote": "Idézett szöveg után"
       },
+      "signature_new_mail": {
+        "label": "Aláírás új leveleknél",
+        "description": "Új levél írása esetén automatikusan beszúrja az aláírásodat. Kapcsold ki, ha minden új levél aláírás nélkül induljon."
+      },
+      "signature_reply_forward": {
+        "label": "Aláírás válaszoknál és továbbításnál",
+        "description": "Válasz vagy továbbítás esetén automatikusan hozzáfűzi az aláírásodat. Kapcsold ki, ha ezek aláírás nélkül mennek ki."
+      },
       "signature_separator": {
         "label": "Aláírás elválasztó",
         "description": "Aláírás előtagjaként a szabványos \"-- \" elválasztó sor (RFC 3676). Kapcsold ki, ha közvetlenül az üzenetből szeretnél az aláírásba folyni."
diff --git a/locales/it/common.json b/locales/it/common.json
index 231cc1696..7b58c4a45 100644
--- a/locales/it/common.json
+++ b/locales/it/common.json
@@ -1940,6 +1940,14 @@
         "above_quote": "Prima del testo citato",
         "below_quote": "Dopo il testo citato"
       },
+      "signature_new_mail": {
+        "label": "Firma sui nuovi messaggi",
+        "description": "Inserisce automaticamente la firma quando componi un nuovo messaggio. Disattiva per iniziare ogni nuovo messaggio senza."
+      },
+      "signature_reply_forward": {
+        "label": "Firma su risposte e inoltri",
+        "description": "Aggiunge automaticamente la firma quando rispondi o inoltri un messaggio. Disattiva per inviarli senza."
+      },
       "signature_separator": {
         "label": "Delimitatore firma",
         "description": "Anteporre alla firma la riga di delimitazione standard \"-- \" (RFC 3676). Disattiva se preferisci passare direttamente dal messaggio alla firma."
diff --git a/locales/ja/common.json b/locales/ja/common.json
index 3571796f2..82ddb010f 100644
--- a/locales/ja/common.json
+++ b/locales/ja/common.json
@@ -1940,6 +1940,14 @@
         "above_quote": "引用テキストの前",
         "below_quote": "引用テキストの後"
       },
+      "signature_new_mail": {
+        "label": "新規メールの署名",
+        "description": "新しいメールを作成するときに署名を自動的に挿入します。オフにすると署名なしで作成を始められます。"
+      },
+      "signature_reply_forward": {
+        "label": "返信・転送の署名",
+        "description": "返信や転送のときに署名を自動的に追加します。オフにすると署名なしで送信されます。"
+      },
       "signature_separator": {
         "label": "署名区切り",
         "description": "署名の前に標準の区切り行「-- 」（RFC 3676）を付けます。本文から署名へ直接続けたい場合はオフにしてください。"
diff --git a/locales/ko/common.json b/locales/ko/common.json
index 079eac99f..b717bf9d2 100644
--- a/locales/ko/common.json
+++ b/locales/ko/common.json
@@ -1949,6 +1949,14 @@
         "above_quote": "인용 텍스트 앞",
         "below_quote": "인용 텍스트 뒤"
       },
+      "signature_new_mail": {
+        "label": "새 메일 서명",
+        "description": "새 메일을 작성할 때 서명을 자동으로 삽입합니다. 끄면 서명 없이 새 메일을 시작합니다."
+      },
+      "signature_reply_forward": {
+        "label": "답장·전달 서명",
+        "description": "답장이나 전달할 때 서명을 자동으로 추가합니다. 끄면 서명 없이 보냅니다."
+      },
       "signature_separator": {
         "label": "서명 구분선",
         "description": "서명 앞에 표준 구분선 \"-- \" (RFC 3676)을 추가합니다. 본문에서 바로 서명으로 이어지길 원하면 해제하세요."
diff --git a/locales/lv/common.json b/locales/lv/common.json
index 64eeef5f5..9cc7121ae 100644
--- a/locales/lv/common.json
+++ b/locales/lv/common.json
@@ -1940,6 +1940,14 @@
         "above_quote": "Pirms citētā teksta",
         "below_quote": "Pēc citētā teksta"
       },
+      "signature_new_mail": {
+        "label": "Paraksts jaunajos e-pastos",
+        "description": "Rakstot jaunu vēstuli, automātiski ievieto jūsu parakstu. Izslēdziet, lai katra jauna vēstule sāktos bez tā."
+      },
+      "signature_reply_forward": {
+        "label": "Paraksts atbildēs un pārsūtījumos",
+        "description": "Atbildot vai pārsūtot vēstuli, automātiski pievieno jūsu parakstu. Izslēdziet, lai tās tiktu nosūtītas bez tā."
+      },
       "signature_separator": {
         "label": "Paraksta atdalītājs",
         "description": "Pirms paraksta pievienot standarta atdalītāju \"-- \" (RFC 3676). Izslēdziet, ja vēlaties pāriet no ziņojuma tieši uz parakstu."
diff --git a/locales/mn/common.json b/locales/mn/common.json
index e09096e2f..4fc940fde 100644
--- a/locales/mn/common.json
+++ b/locales/mn/common.json
@@ -1952,6 +1952,14 @@
         "above_quote": "Ишлэлээс өмнө",
         "below_quote": "Иш иш татсаны дараа"
       },
+      "signature_new_mail": {
+        "label": "Шинэ захидалд гарын үсэг",
+        "description": "Шинэ захидал бичих үед гарын үсгээ автоматаар оруулна. Шинэ захидал бүрийг гарын үсэггүй эхлүүлэх бол унтраана уу."
+      },
+      "signature_reply_forward": {
+        "label": "Хариу, дамжуулахад гарын үсэг",
+        "description": "Захидалд хариу өгөх эсвэл дамжуулах үед гарын үсгээ автоматаар хавсаргана. Гарын үсэггүй илгээхийн тулд унтраана уу."
+      },
       "signature_separator": {
         "label": "Гарын үсэг хязгаарлагч",
         "description": "Гарын үсгийн угтварыг стандарт \"--\" хязгаарлагч шугамаар (RFC 3676) оруулна. Хэрэв та мессежээсээ шууд гарын үсэг рүү шилжихийг хүсвэл унтраа."
diff --git a/locales/nb/common.json b/locales/nb/common.json
index 6218c62c6..b193db576 100644
--- a/locales/nb/common.json
+++ b/locales/nb/common.json
@@ -1952,6 +1952,14 @@
         "above_quote": "Før sitert tekst",
         "below_quote": "Etter sitert tekst"
       },
+      "signature_new_mail": {
+        "label": "Signatur på nye e-poster",
+        "description": "Setter automatisk inn signaturen din når du skriver en ny melding. Slå av for å starte hver ny melding uten."
+      },
+      "signature_reply_forward": {
+        "label": "Signatur på svar og videresendinger",
+        "description": "Legger automatisk til signaturen din når du svarer eller videresender. Slå av for å sende dem uten."
+      },
       "signature_separator": {
         "label": "Signaturavgrensning",
         "description": "Sett standardavgrensningen «-- » på en egen linje foran signaturen (RFC 3676). Slå av hvis meldingen skal gå rett over i signaturen."
diff --git a/locales/nl/common.json b/locales/nl/common.json
index d43ba15c7..b8e39f188 100644
--- a/locales/nl/common.json
+++ b/locales/nl/common.json
@@ -1940,6 +1940,14 @@
         "above_quote": "Voor geciteerde tekst",
         "below_quote": "Na geciteerde tekst"
       },
+      "signature_new_mail": {
+        "label": "Handtekening bij nieuwe berichten",
+        "description": "Voegt je handtekening automatisch toe bij het opstellen van een nieuw bericht. Zet uit om elk nieuw bericht zonder te beginnen."
+      },
+      "signature_reply_forward": {
+        "label": "Handtekening bij antwoorden en doorsturen",
+        "description": "Voegt je handtekening automatisch toe bij antwoorden of doorsturen. Zet uit om ze zonder te versturen."
+      },
       "signature_separator": {
         "label": "Handtekening-scheider",
         "description": "De handtekening voorafgaan met de standaard scheidingsregel \"-- \" (RFC 3676). Zet uit als je liever direct van het bericht in de handtekening overgaat."
diff --git a/locales/pl/common.json b/locales/pl/common.json
index 113232449..a00859682 100644
--- a/locales/pl/common.json
+++ b/locales/pl/common.json
@@ -1949,6 +1949,14 @@
         "above_quote": "Przed cytowanym tekstem",
         "below_quote": "Po cytowanym tekście"
       },
+      "signature_new_mail": {
+        "label": "Podpis w nowych wiadomościach",
+        "description": "Automatycznie wstawia podpis podczas pisania nowej wiadomości. Wyłącz, aby zaczynać każdą nową wiadomość bez niego."
+      },
+      "signature_reply_forward": {
+        "label": "Podpis w odpowiedziach i przesyłanych",
+        "description": "Automatycznie dołącza podpis przy odpowiadaniu lub przesyłaniu dalej. Wyłącz, aby wysyłać je bez niego."
+      },
       "signature_separator": {
         "label": "Separator podpisu",
         "description": "Poprzedź podpis standardową linią separatora \"-- \" (RFC 3676). Wyłącz, jeśli chcesz przejść bezpośrednio z treści wiadomości do podpisu."
diff --git a/locales/pt/common.json b/locales/pt/common.json
index a1bb94a19..7e164b26a 100644
--- a/locales/pt/common.json
+++ b/locales/pt/common.json
@@ -1940,6 +1940,14 @@
         "above_quote": "Antes do texto citado",
         "below_quote": "Depois do texto citado"
       },
+      "signature_new_mail": {
+        "label": "Assinatura em novas mensagens",
+        "description": "Insere automaticamente a sua assinatura ao escrever uma nova mensagem. Desative para começar cada nova mensagem sem ela."
+      },
+      "signature_reply_forward": {
+        "label": "Assinatura em respostas e encaminhamentos",
+        "description": "Acrescenta automaticamente a sua assinatura ao responder ou encaminhar uma mensagem. Desative para as enviar sem ela."
+      },
       "signature_separator": {
         "label": "Delimitador de assinatura",
         "description": "Anteceder a assinatura com a linha delimitadora padrão \"-- \" (RFC 3676). Desative se preferir passar direto da mensagem para a assinatura."
diff --git a/locales/ro/common.json b/locales/ro/common.json
index 326779d43..feaf6fd0d 100644
--- a/locales/ro/common.json
+++ b/locales/ro/common.json
@@ -1952,6 +1952,14 @@
         "above_quote": "Înaintea textului citat",
         "below_quote": "După textul între ghilimele"
       },
+      "signature_new_mail": {
+        "label": "Semnătură la mesajele noi",
+        "description": "Inserează automat semnătura când compui un mesaj nou. Dezactivează pentru a începe fiecare mesaj nou fără ea."
+      },
+      "signature_reply_forward": {
+        "label": "Semnătură la răspunsuri și redirecționări",
+        "description": "Adaugă automat semnătura când răspunzi sau redirecționezi un mesaj. Dezactivează pentru a le trimite fără ea."
+      },
       "signature_separator": {
         "label": "Delimitator de semnătură",
         "description": "Prefațați semnătura cu linia standard de delimitare „-- ” (RFC 3676). Dezactivați această opțiune dacă preferați ca mesajul să treacă direct în semnătură."
diff --git a/locales/ru/common.json b/locales/ru/common.json
index c6d3f6bce..751f4992f 100644
--- a/locales/ru/common.json
+++ b/locales/ru/common.json
@@ -1940,6 +1940,14 @@
         "above_quote": "Перед цитируемым текстом",
         "below_quote": "После цитируемого текста"
       },
+      "signature_new_mail": {
+        "label": "Подпись в новых письмах",
+        "description": "Автоматически вставляет подпись при написании нового письма. Отключите, чтобы начинать каждое новое письмо без неё."
+      },
+      "signature_reply_forward": {
+        "label": "Подпись в ответах и пересылках",
+        "description": "Автоматически добавляет подпись при ответе или пересылке письма. Отключите, чтобы отправлять их без неё."
+      },
       "signature_separator": {
         "label": "Разделитель подписи",
         "description": "Добавлять перед подписью стандартную строку-разделитель \"-- \" (RFC 3676). Отключите, если хотите переходить от текста сразу к подписи."
diff --git a/locales/sk/common.json b/locales/sk/common.json
index bb5bb9044..be6e481b0 100644
--- a/locales/sk/common.json
+++ b/locales/sk/common.json
@@ -1952,6 +1952,14 @@
         "above_quote": "Pred citovaným textom",
         "below_quote": "Za citovaným textom"
       },
+      "signature_new_mail": {
+        "label": "Podpis pri nových správach",
+        "description": "Pri písaní novej správy automaticky vloží váš podpis. Vypnite, ak chcete každú novú správu začať bez podpisu."
+      },
+      "signature_reply_forward": {
+        "label": "Podpis pri odpovediach a preposielaní",
+        "description": "Pri odpovedaní alebo preposielaní automaticky priloží váš podpis. Vypnite, ak ich chcete odosielať bez podpisu."
+      },
       "signature_separator": {
         "label": "Oddeľovač podpisu",
         "description": "Pred podpis pridať štandardný oddeľovací riadok \"-- \" (RFC 3676)."
diff --git a/locales/th/common.json b/locales/th/common.json
index e2a6bc31a..8ed2a5aaa 100644
--- a/locales/th/common.json
+++ b/locales/th/common.json
@@ -4621,6 +4621,14 @@
         "above_quote": "ก่อนข้อความที่อ้างอิง",
         "below_quote": "หลังข้อความที่อ้างอิง"
       },
+      "signature_new_mail": {
+        "label": "ลายเซ็นในอีเมลใหม่",
+        "description": "แทรกลายเซ็นของคุณโดยอัตโนมัติเมื่อเขียนอีเมลใหม่ ปิดใช้งานหากต้องการเริ่มอีเมลใหม่ทุกฉบับโดยไม่มีลายเซ็น"
+      },
+      "signature_reply_forward": {
+        "label": "ลายเซ็นในการตอบกลับและส่งต่อ",
+        "description": "แนบลายเซ็นของคุณโดยอัตโนมัติเมื่อตอบกลับหรือส่งต่ออีเมล ปิดใช้งานหากต้องการส่งโดยไม่มีลายเซ็น"
+      },
       "signature_separator": {
         "label": "เส้นคั่นลายเซ็น",
         "description": "ใส่เส้นคั่นมาตรฐาน \"-- \" นำหน้าลายเซ็น (RFC 3676) ปิดใช้งานหากคุณต้องการให้ข้อความของคุณไหลต่อเนื่องเข้าสู่ลายเซ็นทันที"
diff --git a/locales/tr/common.json b/locales/tr/common.json
index d0b004a0b..10fbee958 100644
--- a/locales/tr/common.json
+++ b/locales/tr/common.json
@@ -1949,6 +1949,14 @@
         "above_quote": "Alıntılanan metinden önce",
         "below_quote": "Alıntılanan metinden sonra"
       },
+      "signature_new_mail": {
+        "label": "Yeni e-postalarda imza",
+        "description": "Yeni bir ileti yazarken imzanızı otomatik olarak ekler. Her yeni iletiye imzasız başlamak için kapatın."
+      },
+      "signature_reply_forward": {
+        "label": "Yanıtlarda ve iletmelerde imza",
+        "description": "Bir iletiyi yanıtlarken veya iletirken imzanızı otomatik olarak ekler. İmzasız göndermek için kapatın."
+      },
       "signature_separator": {
         "label": "İmza ayırıcı",
         "description": "İmzayı standart \"-- \" ayırıcı satırıyla başlat (RFC 3676). Mesajdan doğrudan imzaya geçmek istiyorsanız kapatın."
diff --git a/locales/uk/common.json b/locales/uk/common.json
index 794ad0b85..871528a67 100644
--- a/locales/uk/common.json
+++ b/locales/uk/common.json
@@ -1949,6 +1949,14 @@
         "above_quote": "Перед цитованим текстом",
         "below_quote": "Після цитованого тексту"
       },
+      "signature_new_mail": {
+        "label": "Підпис у нових листах",
+        "description": "Автоматично вставляє підпис під час написання нового листа. Вимкніть, щоб кожен новий лист починався без нього."
+      },
+      "signature_reply_forward": {
+        "label": "Підпис у відповідях і пересиланнях",
+        "description": "Автоматично додає підпис під час відповіді або пересилання листа. Вимкніть, щоб надсилати їх без нього."
+      },
       "signature_separator": {
         "label": "Розділювач підпису",
         "description": "Додавати перед підписом стандартний рядок-розділювач \"-- \" (RFC 3676). Вимкніть, якщо хочете переходити з повідомлення відразу до підпису."
diff --git a/locales/vi/common.json b/locales/vi/common.json
index b12aa9c13..23815f076 100644
--- a/locales/vi/common.json
+++ b/locales/vi/common.json
@@ -1964,6 +1964,14 @@
         "above_quote": "Trước phần trích dẫn",
         "below_quote": "Sau phần trích dẫn"
       },
+      "signature_new_mail": {
+        "label": "Chữ ký trong thư mới",
+        "description": "Tự động chèn chữ ký của bạn khi soạn thư mới. Tắt nếu bạn muốn mỗi thư mới bắt đầu không có chữ ký."
+      },
+      "signature_reply_forward": {
+        "label": "Chữ ký khi trả lời và chuyển tiếp",
+        "description": "Tự động thêm chữ ký của bạn khi trả lời hoặc chuyển tiếp thư. Tắt nếu muốn gửi chúng không kèm chữ ký."
+      },
       "signature_separator": {
         "label": "Dấu phân cách chữ ký",
         "description": "Thêm dòng phân cách chuẩn \"-- \" trước chữ ký (RFC 3676). Tắt nếu bạn muốn nối thẳng nội dung thư với chữ ký."
diff --git a/locales/zh-TW/common.json b/locales/zh-TW/common.json
index e4b2c38be..3c4e48fc3 100644
--- a/locales/zh-TW/common.json
+++ b/locales/zh-TW/common.json
@@ -1952,6 +1952,14 @@
         "above_quote": "引用文字之前",
         "below_quote": "引用文字之後"
       },
+      "signature_new_mail": {
+        "label": "新郵件簽名",
+        "description": "撰寫新郵件時自動插入簽名。關閉後每封新郵件都不帶簽名。"
+      },
+      "signature_reply_forward": {
+        "label": "回覆轉寄簽名",
+        "description": "回覆或轉寄時自動附加簽名。關閉後回覆和轉寄不帶簽名。"
+      },
       "signature_separator": {
         "label": "簽名檔分隔線",
         "description": "在簽名檔前加入標準的「-- 」分隔線（RFC 3676）。若希望內文直接接續簽名檔，請停用此選項。"
diff --git a/locales/zh/common.json b/locales/zh/common.json
index 012aa038d..10eb2c6a1 100644
--- a/locales/zh/common.json
+++ b/locales/zh/common.json
@@ -1949,6 +1949,14 @@
         "above_quote": "引用文本之前",
         "below_quote": "引用文本之后"
       },
+      "signature_new_mail": {
+        "label": "新邮件签名",
+        "description": "写新邮件时自动插入签名。关闭后每封新邮件都不带签名。"
+      },
+      "signature_reply_forward": {
+        "label": "回复转发签名",
+        "description": "回复或转发时自动附加签名。关闭后回复和转发不带签名。"
+      },
       "signature_separator": {
         "label": "签名分隔符",
         "description": "在签名前加入标准的 “-- ” 分隔行（RFC 3676）。如果希望正文直接连到签名，请关闭。"
diff --git a/stores/__tests__/settings-store-sync.test.ts b/stores/__tests__/settings-store-sync.test.ts
index d8ba0ae96..fc7462732 100644
--- a/stores/__tests__/settings-store-sync.test.ts
+++ b/stores/__tests__/settings-store-sync.test.ts
@@ -52,6 +52,41 @@ describe('settings sync debounce', () => {
     });
   });
 
+  it('defaults the signature auto-insert toggles and the separator to on and exports them', () => {
+    const settings = useSettingsStore.getState();
+    expect(settings.signatureNewMailEnabled).toBe(true);
+    expect(settings.signatureReplyForwardEnabled).toBe(true);
+    expect(settings.signatureSeparatorEnabled).toBe(true);
+
+    const exported = JSON.parse(settings.exportSettings()) as Record<string, unknown>;
+    expect(exported).toMatchObject({
+      signatureNewMailEnabled: true,
+      signatureReplyForwardEnabled: true,
+      signatureSeparatorEnabled: true,
+    });
+  });
+
+  it('keeps inserting the signature for users whose saved settings predate the toggles', async () => {
+    useSettingsStore.getState().resetToDefaults();
+    // Saved by a build without the toggles: the keys are missing.
+    localStorage.setItem('settings-storage', JSON.stringify({
+      state: { signaturePosition: 'below_quote', signatureSeparatorEnabled: true },
+      version: 12,
+    }));
+    await useSettingsStore.persist.rehydrate();
+    expect(useSettingsStore.getState().signatureNewMailEnabled).toBe(true);
+    expect(useSettingsStore.getState().signatureReplyForwardEnabled).toBe(true);
+
+    // A server copy written by such a build has no toggles either.
+    useSettingsStore.getState().importSettings(
+      JSON.stringify({ signaturePosition: 'above_quote' }),
+      { serverAccountId: 'a@example.com' },
+    );
+    expect(useSettingsStore.getState().signatureNewMailEnabled).toBe(true);
+    expect(useSettingsStore.getState().signatureReplyForwardEnabled).toBe(true);
+    localStorage.removeItem('settings-storage');
+  });
+
   it('does not rewrite a pending account snapshot after another account becomes active', async () => {
     const settings = useSettingsStore.getState();
     settings.enableSync('a@example.com', 'https://mail-a.example.com');
diff --git a/stores/settings-store.ts b/stores/settings-store.ts
index 6d79f88dd..57fc8e7fe 100644
--- a/stores/settings-store.ts
+++ b/stores/settings-store.ts
@@ -591,6 +591,8 @@ interface SettingsState extends AccessibilitySettings {
   subAddressDelimiter: string; // Character separating user from tag (e.g. "user+tag@")
   sendDelaySeconds: SendDelaySeconds;
   signaturePosition: SignaturePosition; // Position of the signature relative to quoted text in replies/forwards
+  signatureNewMailEnabled: boolean; // Insert the signature automatically in new messages
+  signatureReplyForwardEnabled: boolean; // Insert the signature automatically in replies and forwards
   signatureSeparatorEnabled: boolean; // Prefix the signature with the RFC 3676 "-- " delimiter
   signatureDetails: SignatureDetails; // Title, department, phone, mobile for the organisation signature (lib/org-signature.ts)
   requestReadReceiptDefault: boolean; // Pre-check "request read receipt" in the composer
@@ -931,6 +933,10 @@ const DEFAULT_SETTINGS = {
   subAddressDelimiter: DEFAULT_SUB_ADDRESS_DELIMITER,
   sendDelaySeconds: 0 as SendDelaySeconds,
   signaturePosition: 'below_quote' as SignaturePosition,
+  // On, as before the toggles existed: saved settings and server copies
+  // from older builds lack these keys and fall back to this default.
+  signatureNewMailEnabled: true,
+  signatureReplyForwardEnabled: true,
   signatureSeparatorEnabled: true,
   signatureDetails: EMPTY_SIGNATURE_DETAILS,
   requestReadReceiptDefault: false,
@@ -1365,6 +1371,8 @@ export const useSettingsStore = create<SettingsState>()(
           subAddressDelimiter: state.subAddressDelimiter,
           sendDelaySeconds: state.sendDelaySeconds,
           signaturePosition: state.signaturePosition,
+          signatureNewMailEnabled: state.signatureNewMailEnabled,
+          signatureReplyForwardEnabled: state.signatureReplyForwardEnabled,
           signatureSeparatorEnabled: state.signatureSeparatorEnabled,
           signatureDetails: state.signatureDetails,
           requestReadReceiptDefault: state.requestReadReceiptDefault,