Cancel a scheduled message

Cancel a message that was scheduled with scheduled_at but has not been delivered yet. The message is removed from the sending queue and deleted. This action cannot be undone.

Only a scheduled message still in pending can be cancelled: a message already sent, delivered or failed returns 409, as does one that was never scheduled (it is delivered on submit, so there is nothing to call back).

Permissions: Requires conversations:manage. Access is limited by the API key creator's current organization membership and stored key ceiling. See Organization permissions.

curl -X DELETE 'https://api.outstand.so/v1/conversations/string/messages/string'

{  "success": true,  "message": "string"}