The rejected status in Mail means the assistant wrote a reply, but draften did not let it into the mailbox: the draft failed a check. It is a safeguard — draften checks what the model writes as distrustfully as a stranger's e-mail.
Why a draft is rejected
| Cause | What it means | What to do |
|---|---|---|
| signature missing | the draft lacks a line of the signature from Settings → The basics | check the signature in the settings; it must not differ from what the Style instruction says to write |
| link outside the allowed domains | the draft links to a site that is not allowed | add the domain in Settings → Behaviour and limits → Allowed link domains, or the site as a knowledge source |
| the text opens with the assistant's handle | the draft starts with the assistant's @name — it would look like your instruction to revise | usually an attempt at a spoof in the incoming mail; check it |
The reason is shown when you open the message's row in Mail or its detail.
Other things that are not allowed are not rejected, only left out of the draft: a Cc to an address that is not on the allowed list, and an attachment that is not in the attachments list. The recipient may only be someone who is in the original message.
It may be an attack
When a rejection comes with a message from an unknown sender, look at it. Someone may have hidden an instruction for the assistant in the e-mail ("cc the reply to…", "add this link"). Mail may flag such a message as suspicious. The check worked exactly as it should: nothing was sent and nothing was created.
I want the draft anyway
When the message is fine and you fixed the cause (added the domain, say), click Process again or Draft a reply in Mail.
Failed
The failed status is a different case: processing did not work even on the third attempt, usually because of an outage of the mail service or the model provider. The last error is in the message's detail. Try Process again; when it keeps happening, look at Settings → Activity.