IndiaTimes recently announced that they were shutting down their free email service.
And now airtel has announced something similar. The company is discontinuing their airtel Mail Service which is powered by the Google Apps Platform.
Now, Google provide tools to export your existing data on their servers so that is not a problem.
The problem is for those users who are using email address powered by this platform for business purposes.
Airtel does not seem to even offer a forwarding service. So I can only imagine that all email addresses would stop working after January 21 next year.