The composer's signature follows the alias being sent from

Shipped

October 29, 2026 at 2:21 AM UTC

Author

Kamo

Commit

42810e2

The template preview was requested with templateFrom, which skips aliases on purpose - a rule from when the composer resolved signatures itself. So with Dylan@kamouniverse.com (an alias) as the From, EmailService was asked for the primary mailbox's signature and printed dylan@kamocrm.com. Ask with the real From, as the send does. EmailService keeps the sending mailbox's template for an alias (through mailboxId) and now prints the alias.