Manage Your All Your E-Mail Acoounts From Gmail

Yes!, its possible thouugh it will take a few minutes to setup.
This will allow you to :
->Forward all your Email from other accounts to your Gmail Account.
->Reply To Specific Account Posts With Specific Addresses.\

To setup:
1.)Log on to Gmail.
2.)Resist Yourself from reading the new mails for the momement (if any!):-)
3.)Click On Settings On Top Right Corner.
4.)Here Click On The Accounts Tab.
5.)Click on Add Another Email Account in "Get Emails From Another Email Account"
6.)Follow the simple instructions.

[Note:This only works with POP3 enabled Email Accounts.]