Heard of 30Gigs? Well this is the new web based email service provider that combines personal file storage (30Gb), GD2 signatures and anonymous email all in one service, and is free.
This is what I read about them on their website.

30Gigs.com started off with the idea of creating a "All in one" site for the webmaster and avid computer users. Combining personal file storage, GD2 signatures and anonymous email all in one service, which would be free. Our main goal is to increase our space even further, to 50 gigs, or maybe 100 as time goes on. 30Gigs.com is still in a very heavy beta, and if you are a member, please help us to make it the best mail server there is. We will be offering a section for personal file storage (up to 30 gigs) and a GD2 signature maker to keep your email safe from spam robots. We also offer a unique feature, which allows you to send a email from any address you want. This is very usefull if you have multiple accounts linked to your 30Gigs.com account, and want to send a email from john@otherservice.com so you dont confuse the sender. Any further information can be addressed to support@30gigs.com.

And their Development Blog explains on what they are currently working on. I wonder who saves 30GB of emails or as they mention in future 30gigs hopes to add support for file storage. Theoretically youwill be able to upload a file to your 30gigs account and be able to access it from anywhere you go.
They currently accept sign-ups only through invitations. But before you sign up, I strongly recommend you to read this blog posted by Om Malik
If interested in 30Gigs, get your invites from this invite spooler.