SMS Delivery Statuses

Check out the table below for a breakdown of different delivery statuses and what each status means.

SMS Delivery Status Codes & Meanings

Status Code	Description
Delivered (1)	A message has been submitted to the network and the network has sent back a delivery report that the message was delivered to the handset.
Undelivered (2)	A message has been submitted to the network and the network has sent back a delivery report that the message failed to reach the handset. This could be due to an invalid number or the number being in a submitted state for too long and being discarded.
Submitted to SMSC (8)	A message has been submitted to the network and we are still awaiting for a delivery report to be sent back to us from the network as to whether the message was delivered or undelivered to the handset. Messages will stay in this state for between 48 and 72 hours before they get discarded and the status of the message is changed to "Undelivered".
Rejected/Failed at Network (16)	This status is returned for numbers that are blocked, incorrect (too long/short), or have an invalid prefix. These messages don't leave our system so are not charged for.

API Status Codes

Please refer to the below guide for status codes that get returned when sending via HTTPS API:

API Response Code