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feat(compose): From override + catch-all auto-reply (fixes #246)

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Adds an Override toggle in the composer's From row. When enabled, name
and address become free-text inputs. Mail is still submitted through the
selected identity, but the outgoing message's From: header — and the
SMTP envelope MAIL FROM when different — is set from the override.

The existing "Auto-select Reply Address" setting is extended: if the
incoming message was addressed to an alias on a domain that matches one
of your identities but isn't itself an identity (classic domain catch-
all), it now auto-enables Override and pre-fills the alias. Quick reply
honors the same resolution. The setting is relabeled to reflect the
broader behavior.

JMAP: client.sendEmail gains an optional envelopeMailFrom; when set, the
EmailSubmission includes an explicit envelope with that mailFrom and the
to/cc/bcc as rcptTo so header-From and envelope can diverge (JMAP §7.3).

S/MIME: override is incompatible with sign/encrypt and is refused with a
clear error — signing a different visible From from the identity's
certificate Subject would produce messages clients reject.

Tests: resolveReplyFrom covers exact match, sub-address stripping,
catch-all detection, identity preference, and foreign-domain null.
This commit is contained in:
Augustin Marcin
2026-05-11 12:13:47 +02:00
committed by Linus Rath
parent 2d7e24b513
commit b0640c9ecc
8 changed files with 297 additions and 40 deletions
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stores/email-store.ts
+3 -3
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@@ -75,7 +75,7 @@ interface EmailStore {
loadMoreEmails: (client: IJMAPClient) => Promise<void>;
fetchEmailContent: (client: IJMAPClient, emailId: string) => Promise<Email | null>;
fetchQuota: (client: IJMAPClient) => Promise<void>;
sendEmail: (client: IJMAPClient, to: string[], subject: string, body: string, cc?: string[], bcc?: string[], identityId?: string, fromEmail?: string, draftId?: string, fromName?: string, htmlBody?: string, attachments?: Array<{ blobId: string; name: string; type: string; size: number; disposition?: 'attachment' | 'inline'; cid?: string }>, inReplyTo?: string[], references?: string[]) => Promise<void>;
sendEmail: (client: IJMAPClient, to: string[], subject: string, body: string, cc?: string[], bcc?: string[], identityId?: string, fromEmail?: string, draftId?: string, fromName?: string, htmlBody?: string, attachments?: Array<{ blobId: string; name: string; type: string; size: number; disposition?: 'attachment' | 'inline'; cid?: string }>, inReplyTo?: string[], references?: string[], envelopeMailFrom?: string) => Promise<void>;
sendRawEmail: (client: IJMAPClient, rawMimeBlob: Blob, identityId: string) => Promise<void>;
deleteEmail: (client: IJMAPClient, emailId: string, forceDelete?: boolean) => Promise<void>;
markAsRead: (client: IJMAPClient, emailId: string, read: boolean) => Promise<void>;
@@ -534,10 +534,10 @@ export const useEmailStore = create<EmailStore>((set, get) => ({
}
},
sendEmail: async (client, to, subject, body, cc, bcc, identityId, fromEmail, draftId, fromName, htmlBody, attachments, inReplyTo, references) => {
sendEmail: async (client, to, subject, body, cc, bcc, identityId, fromEmail, draftId, fromName, htmlBody, attachments, inReplyTo, references, envelopeMailFrom) => {
set({ isLoading: true, error: null });
try {
await client.sendEmail(to, subject, body, cc, bcc, identityId, fromEmail, draftId, fromName, htmlBody, attachments, inReplyTo, references);
await client.sendEmail(to, subject, body, cc, bcc, identityId, fromEmail, draftId, fromName, htmlBody, attachments, inReplyTo, references, envelopeMailFrom);
// Refresh handled by UI layer for immediate feedback
set({ isLoading: false });
} catch (error) {