Here are the possible statuses you may see for text messages you send from our system:
Accepted - The message servicer has received your request to create the message from a Messaging Service and is determining the optimal 'From' number from your service.
Delivered - The message servicer has received confirmation of message delivery from the recipient's carrier.
Delivery Unknown - The message has remained in the sent status for longer than 1 hour without receiving a further status update.
Failed - The message could not be sent. This can happen for various reasons including queue overflows, account suspensions and media errors.
Queued - The message servicer has received your request to create the message. All new messages sent from a specific phone number are created with a status of queued.
Received - An incoming message has been processed, and the message servicer has delivered the message to your number.
Sending - The message servicer is in the process of sending the message. This status is usually only present for a very short time, and in most instances will not be visible in the console or logs.
Sent - The message servicer has received a confirmation that the message is on the way to the recipient's carrier.
Undelivered - The message servicer has received a delivery receipt indicating that the message was not delivered. This can happen for a number of reasons including carrier content filtering (i.e. spam filtering), availability of the destination handset, etc.