Now if you want to check your Account summary in Mtnl Mumbai you have to registe r for their email address.It is compulsory. Without registering for their Email address you cant view the account summary. They told me that around 100 to 200 people visit to check their usage and so their is heavy load on server. Hence they have made it compulsory.Note:- I have asked them should i have to pay for the email address. They told me that they have made it free.