1. Keep your balance less than 5 rs
2. Go:- airtel live>email&chat>Ezmail
3. Click "monthly plan(Rs50 per month)"
4. click "i confirm"
5. Them you see error "sorry! there is some problem in/subcription process. plz try again later"
6. add bookmark this error page
7. edit bookmark
8. You can see this adress http://mobilemail.in/mmailv2/xhtml/btCallcbs.jsp?trialdays=0∝=airtel&eup=M&subFlag=subsflag
9. Change "trialdays=30"
10. Save bookmark and use free ezmail