After a zillion of posts on how great GMail is, who already has an account and more, more, more of the same, finally I’m blogging on GMail. Not on how great it is (although it is!!! ;)) but about a GMail Agent API for .NET!
You should really check out this website on what it can do, but in short, you can manage logging in into GMail and read your mailbox.
On the same website you can also find a tool written with the api to import addresses and a notifier.
They just released version 0.6 with proxy support, and it also compiles under Mono. And you know the rule, if it compiles, it works!