diff --git a/lib/__tests__/plugin-host-calendar-respond.test.ts b/lib/__tests__/plugin-host-calendar-respond.test.ts
index f287ed136..43e486328 100644
--- a/lib/__tests__/plugin-host-calendar-respond.test.ts
+++ b/lib/__tests__/plugin-host-calendar-respond.test.ts
@@ -92,6 +92,13 @@ describe('api.calendar.respond', () => {
     expect(store.rsvpEvent).not.toHaveBeenCalled();
   });
 
+  it('answers a message the list names with the account of the user', async () => {
+    // Search results carry their account, the user's own one included.
+    useEmailStore.setState({ emails: [{ id: 'inv', sourceClientAccountId: 'login1', sourceAccountId: 'acc1' }] } as never);
+    useAuthStore.setState({ getClientForAccount: () => client } as never);
+    await expect(call(ASSISTANT, 'calendar.respond', 'inv', 'accepted')).resolves.toMatchObject({ status: 'accepted' });
+  });
+
   it('refuses mail of another account, a bad status and plugins without calendar:respond', async () => {
     useEmailStore.setState({ emails: [{ id: 'inv', sourceClientAccountId: 'login1', sourceAccountId: 'acc2' }] } as never);
     useAuthStore.setState({ getClientForAccount: () => client } as never);
diff --git a/lib/plugin-sandbox/assistant/c.calendar.ts b/lib/plugin-sandbox/assistant/c.calendar.ts
index 20d07c5e4..9c76f72de 100644
--- a/lib/plugin-sandbox/assistant/c.calendar.ts
+++ b/lib/plugin-sandbox/assistant/c.calendar.ts
@@ -65,8 +65,9 @@ export async function doCalendarRespond(emailIdArg: unknown, statusArg: unknown)
 
   const named = await readNamedEmail(client, emailId, method);
   if (!named) throw new Error(`${method}: no message with id "${emailId}"`);
-  // Mail of a shared or group mailbox is answered as that account: only in the reader.
-  if (named.accountId !== undefined) throw new Error(`${method}: answer invitations of other accounts in the reader`);
+  // Mail of a shared or group mailbox is answered as that account: only in
+  // the reader. Search results name the user's own account too.
+  if (named.accountId !== undefined && named.accountId !== client.getAccountId()) throw new Error(`${method}: answer invitations of other accounts in the reader`);
   const { email } = named;
 
   const invitation = await readOwnInvitation(client, email);