Just saw a post from DownloadSquad about the advent of IMAP in GMail. It’s only a few hours old, and by the sounds of things this is a really fresh feature… which probably explains why it hasn’t shown up in my account yet… But the new help docs are there so it’s just a matter of time.
For those who may not know, IMAP is the bi-directional email protocol which makes Outlook so successful in the corporate environment. With this feature enabled, I think it won’t be long until we see an even tighter outlook-like integration of Gmail and Google Calendar.