Outgoing text messages
How do I see the SMS usage of my account?
If the add-on module Text Messaging has been activated, you can, as the administrator, get an overview of the SMS usage from the last 6 months.
In this article, you will learn how to get an overview of outgoing text messages:
This is how you can see your SMS usage
In the menu, go to My data > Subscription

Scroll down to the section Outgoing text messages to see an overview of sent messages over the past 6 months

INFO:
If you want to adjust the maximum amount of text messages, then you can learn how to do so by reading the following article: Maximum number of text messages