USER ACCOUNTS ARE AUTO CHARGED FOR SMS, PHONE AND 3RD PARTY USAGE AND FEES. THESE CHARGES COME OUT IN INCREMENTS OF $10 AND AUTO RECHARGE BASED ON THE AMOUNT SET BY THE USER. THE ACCOUNT IS AUTOMATICALLY SETUP TO AUTO-CHARGE WHEN THE ACCOUNT REACHES $0.00.
There is a one time A2P Registration Fee for Twilio which will vary depending on whether you are registering a business or an individual.