diff --git a/components/contacts/__tests__/contact-list.test.tsx b/components/contacts/__tests__/contact-list.test.tsx
index 2f1c9c8db..915a1e3f8 100644
--- a/components/contacts/__tests__/contact-list.test.tsx
+++ b/components/contacts/__tests__/contact-list.test.tsx
@@ -183,4 +183,14 @@ describe('ContactList', () => {
     });
   });
 
+
+  it("writes to a contact from the right-click menu in the app's composer, not through mailto:", () => {
+    const onComposeContact = vi.fn();
+    const href = window.location.href;
+    render(<ContactList {...defaultProps} onComposeContact={onComposeContact} />);
+    fireEvent.contextMenu(screen.getByText('Alice Smith'));
+    fireEvent.click(screen.getByText('context_menu.send_email'));
+    expect(onComposeContact).toHaveBeenCalledWith(alice);
+    expect(window.location.href).toBe(href);
+  });
 });
diff --git a/components/contacts/contact-context-menu.tsx b/components/contacts/contact-context-menu.tsx
index d8c85ec68..67c445e5e 100644
--- a/components/contacts/contact-context-menu.tsx
+++ b/components/contacts/contact-context-menu.tsx
@@ -47,6 +47,8 @@ interface ContactContextMenuProps {
   onEdit: () => void;
   onDelete: () => void;
   onAddToGroup: () => void;
+  /** Writes to the contact in the app's composer. */
+  onCompose?: () => void;
   onDuplicate?: () => void;
   onBatchExport?: () => void;
   onBatchAddToGroup?: () => void;
@@ -65,6 +67,7 @@ export function ContactContextMenu({
   onEdit,
   onDelete,
   onAddToGroup,
+  onCompose,
   onDuplicate,
   onBatchExport,
   onBatchAddToGroup,
@@ -81,11 +84,6 @@ export function ContactContextMenu({
     onClose();
   };
 
-  const handleSendEmail = () => {
-    if (!email) return;
-    window.location.href = `mailto:${email}`;
-  };
-
   const handleCall = () => {
     if (!phone) return;
     window.location.href = `tel:${phone}`;
@@ -146,11 +144,11 @@ export function ContactContextMenu({
       <ContextMenuItem icon={Eye} label={t("context_menu.open")} onClick={handle(onOpen)} />
       <ContextMenuItem icon={Pencil} label={t("context_menu.edit")} onClick={handle(onEdit)} />
       {(email || phone) && <ContextMenuSeparator />}
-      {email && (
+      {email && onCompose && (
         <ContextMenuItem
           icon={Mail}
           label={t("context_menu.send_email")}
-          onClick={handle(handleSendEmail)}
+          onClick={handle(onCompose)}
         />
       )}
       {phone && (
diff --git a/components/contacts/contact-list.tsx b/components/contacts/contact-list.tsx
index f736593a7..0428cc0b5 100644
--- a/components/contacts/contact-list.tsx
+++ b/components/contacts/contact-list.tsx
@@ -114,6 +114,8 @@ interface ContactListProps {
   onEditContact: (id: string) => void;
   onDeleteContact: (contact: ContactCard) => void;
   onAddContactToGroup: (id: string) => void;
+  /** Opens the app's composer to the contact. */
+  onComposeContact?: (contact: ContactCard) => void;
   /** Show a burger button at the start that opens the (overlay) categories sidebar. */
   onMenuClick?: () => void;
   /** The first fetch is still running: show placeholders, not "No contacts yet". */
@@ -139,6 +141,7 @@ export function ContactList({
   onEditContact,
   onDeleteContact,
   onAddContactToGroup,
+  onComposeContact,
   onMenuClick,
   isLoading = false,
 }: ContactListProps) {
@@ -650,6 +653,7 @@ export function ContactList({
           onEdit={() => onEditContact(contextMenu.data!.id)}
           onDelete={() => onDeleteContact(contextMenu.data!)}
           onAddToGroup={() => onAddContactToGroup(contextMenu.data!.id)}
+          onCompose={onComposeContact ? () => onComposeContact(contextMenu.data!) : undefined}
           onBatchExport={onBulkExport}
           onBatchAddToGroup={onBulkAddToGroup}
           onBatchDelete={onBulkDelete}
diff --git a/components/contacts/contacts-app.tsx b/components/contacts/contacts-app.tsx
index 17795efe8..00022db5b 100644
--- a/components/contacts/contacts-app.tsx
+++ b/components/contacts/contacts-app.tsx
@@ -1199,6 +1199,7 @@ function ContactsAppContent({ linkSegments: routeSegments }: ContactsAppProps =
                   onEditContact={guard(handleEditContact)}
                   onDeleteContact={handleDeleteContact}
                   onAddContactToGroup={guard(handleAddContactToGroup)}
+                  onComposeContact={handleComposeContact}
                   onMenuClick={isNarrow ? () => setNarrowSidebarOpen(true) : undefined}
                   isLoading={supportsSync && !contactsLoaded}
                 />