Sending

Outbound mail is allowlisted. Other recipients wait for you.

The agent calls send_mail with a recipient, a subject, and a body. Attachments are allowed, up to about 25 MB, including an EPUB.

Recipient	What happens
On your allowlist	Postfix accepts it. OpenDKIM signs the Mail address.
Not on the list	Held. Nothing is sent until you approve.
You reject it	It is not sent. The attempt stays in the log.

Each mailbox is rate limited. The defaults are 30 sends an hour and 200 a day.

send_mail to=ada@example.com subject="Notes" body="See you Tuesday."