Delivery Issues

Delivery Issues

Invalid numbers & Rejected messages
As a free service to our customers and to prevent them from unnecessary cost, we check all phone numbers used on SMS.to to see whether they are valid or not...
My messages are not delivered & how to escalate to SMS.to support
Sometimes messages are not delivered. The possible reasons for this are theoretically endless but most of them can be eliminated by us after proper investig...
My messages are delivered with a delay
The first thing to make sure is to determine how you measure the delay and whether or not that is a valid measurement method. It is a common misunderstandin...