Why has my message failed to send?

A "Failed" message status indicates the SMS wasn't delivered to the recipient. This means the message has not been delivered and may need to be resent after resolving the issue.  

Here are common reasons for SMS sending or receiving failures - these are common reasons to the questions "why has my message not sent" and "why am I getting errors on sent messages"

1. You could have hit your sending limit for the month - if you receive the delivery status code 301 you will need to raise a customer support ticket to arrange to have us increase the sending limit (subject to an approval process)
2. Incorrect or invalid phone number: The SMS may not be sent due to an incorrect or invalid number. This could be related to the registration details or the mobile number format. Messages often fail for these reasons. Note: Mobile numbers are required for every user account registration while landline numbers are not allowed.
   • The recommended format for mobile numbers is to include the international prefix (dial code) and no non-numerical characters such as brackets:
     1. Correct: +61412345678 
     2. Incorrect: (0061) 0412 345 678
   • If your numbers are correctly formatted, the number may be invalid, the recipient might have blocked the sender ID, or there could be carrier issues affecting message delivery. Contact customer support for further help.
3. The destination country for the message has restrictions, such as specific limits, a need for an international sending subscription, or the destination not being configured on the account.
4. The recipient has blocked messages or uses a DND (Do Not Disturb) service: The recipient could have opted out of receiving messages from the sender or have manually set up the DND on their phone.
5. The message violates content restrictions (spam filters, etc.)
6. The recipient's phone is switched off or out of service.
7. Network or carrier problems.

Understanding 'Failed' status via Detailed Reports

To learn more about the 'failed' message, go to Reports > Detailed Reports. In the column selector, check "Reason Code" and "Reason Description" to get more details about the rejected message. You can also visit the Delivery Status Codes for additional information.