What Are SMS Credits?
When you use Sendinblue for SMS, you pay with credits. A credit is a unit of cost. Most of the time, one credit equals one SMS message. But this can change sometimes. It depends on the country you are sending to. The destination country's cost can be different. This is because of local network fees. So, it is not always a one-to-one relationship. It is good to check the exact price per country.

How Do You Buy Credits?
You can buy SMS credits in blocks. Sendinblue sells them in different packages. You can choose a small pack or a large one. Buying a larger pack is often a better deal. This is because the price per credit goes down. You save money this way. The credits do not expire. You can use them whenever you want. This gives you a lot of flexibility. It is smart to plan how many you need.