Subscription services:
Subscription services are devided in different "paliers" depending on end-user price.
In France, they have implemented the following alerts for subscription services:
Information alert, which reminds the client how to unsubscribe, blocking alert, which ends the subscription. The client must then resend an MO with the keyword “RENOUV” (which means renew) within 15 days to subscribe again to the service.
These alerts must be free of charge for the client. Also, depending on the price point, you are allowed to send a limited number of MT.

Example: The 1.50 Euros is Palier 8.
Palier 8 allows you to send 2 MT per Week, then you have an Information Alert after 8 MTs, then a blocking alert after 40 MTs (irrelevant how long It takes to send those 40 MTs.)
At that point, the client must send “RENOUV” to continue receiving the service, and it all starts again.

Information messages must be in French!