Email has finally been banned in France. That doesn't mean you'll be forced to use IM, SMS or Twitter to communicate online.
It just means French email no longer exists under the name "email."
Email is now "courriel."
The original plan was to replace email with "courrier electronique" (electronic letter), while a start-up would be known officially as a jeune pousse (young plant).
We haven't heard whether jeune pousse has caught on yet.