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...
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...
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...
