A system and method for incoming and outgoing electronic messages with inmates includes a database including user records having user profiles and inmate profiles, and action event records. The system and method are programmed to associate at least one inmate account number with a specific SIM card or phone number, detect the triggering event, trigger the action event to be performed based on the triggering event, perform the action event data based on the action event. The action event data includes determining whether the user profile is a current user or a new user, receiving at least one inmate account number associated with the message, processing the message according to predetermined criteria, upon determining that the user profile is a current user pairing the message with the at least one inmate account number, and sending the message to the at least one inmate account number.