Gmail is getting support for IMAP clients like Outlook, Thunderbird, and the iPhone. This means Gmail users will no longer be limited to the Gmail.com user interface or to the weak integration they might get from clients using the much more rudimentary POP e-mail protocol.
There's no word on the official rollout schedule for IMAP support. Some users have it, some don't. I do. Don't ask me why. To see if you have support, click the "Settings" link to see if you have a "Forwarding and POP/IMAP" tab.
Update: IMAP rollout … Read more