Wait timed out

wait.timeout · HTTP 408

What it means

No message matching your filters arrived before timeoutSeconds elapsed. The problem names the address waited on and lists, in received, the messages that arrived at the inbox meanwhile without matching.

What to do

Check received for a near miss in the subject or sender, and check the address your application sent to. If the mail is slow, raise timeoutSeconds (up to 60) or call wait again.

Every error the API returns is a JSON problem (RFC 9457) whose code names it and whose type links to its page here. See the docs for how the API works.