Although SMS is a very reliable method of sending messages to a customer's lists, there are situations when a message will not reach its intended destination. The purpose of this article is to provide some of those explanations and also to give customers some suggestions.
Initial testing
It is highly recommended that customers test out their SMS lists to ensure recipients can receive SMS messages.
Issue Reasons
The recipient number is a landline
Landlines cannot receive SMS messages. As a result, the message will be unable to be delivered.
The recipient number is unable to receive the SMS due to their plan
Although most cell phone plans allow for the reception of SMS messages, pay-as-you-go and other plans that may require the purchase of SMS packages may not be able to receive SMS.
The recipient's cell phone is not in service
The cell phone must have service to be able to receive the SMS that was sent. The SMS message will continue to retry for an hour before timing out.
The recipient number has requested a carrier block on the line
Blocks can be established on a line to particular numbers. Still, it is also possible that if a customer has received excessive amounts of unwanted messages in the past, they may also have blocked messages from a particular carrier. In this situation, the recipient may need to contact their carrier to remove the block.
The recipient's carrier has blocked SMS messages from specific origins
We can open further investigations in this case because ContactMonkey uses a reputable service. We invite you to reach out to our Support Team so that we can assist further.