By choosing the MO (SMS Premium) rate, you will receive a one-time earning for the increased cost message sent by the customer. Registration requires sending an SMS with a verification code which will come to the provided number. Then the code must be entered in the form on the website.If you choose MT (subscription) payment, the customer will receive periodic text messages as a part of the subscription and will have to pay for each. The difference is also that the client has to enter a phone number in the form on the page, and does not send a paid message himself. Both in MO (SMS Premium) and in MT, the customer receives a verification code to enter in the appropriate field on the sales page..