Reschedules a scheduled message by updating its send_at time. The message cannot have been sent or cancelled, a queued message must be more than one minute from its current send time, and the new send time must be in the future. Messages built from a calendar event can't be rescheduled (409): their approval covers the send time, so withdraw the message from the event, move the event, and send it for approval again. Submit send_at as an ISO 8601/ATOM datetime with the intended timezone offset; the API converts it to UTC for storage.
| Time | Status | User Agent | |
|---|---|---|---|
Retrieving recent requests… | |||
The rescheduled message
The message is too close to its current send time, or past it, to be rescheduled.
The message was built from a calendar event; withdraw it and send it for approval again.
The message has already been sent, was cancelled, or the new send time is not in the future.