If you are experiencing problems with SMS delivery, it may be due to the following issues:    

  1. You don’t have sufficient SMS credits. See Logs to check the credit costs.  
  2. The recipient country is not enabled to receive SMS in the Account Settings.  
  3. You’re using an invalid number – check the country code. SMS messages are not available for landline numbers.  
  4. The recipient’s mobile is not within mobile range. 
  5. The message content isn’t valid. For example, the delivery may be affected if:  
    • There’s an URL link in the body of your message.  
    • There’s content related to gambling/betting/adult content in your message.  
    • There’s a Unicode in your message.  
    • Your message is split into multiple parts. Very long, multipart messages can cause problems for certain destinations.