The cost of the SMS channel is based solely on the number of text messages sent. There are no one-time fees or fixed costs, you’ll pay only for what you send. Simply buy SMS credits to start sending. Credits can be bought at any time in the My plan area of your platform.
If the platform is used exclusively for sending SMS, the credits are valid for two years. This means that you can use your credits for up to 24 months from the date of purchase. Sending to incorrect or non-existing numbers will affect your credit. On the other hand, if the platform is also used for sending emails, SMS credits will expire together with the email plan.