So I've been thinking of getting a mobile device suitable for sending and retrieving electronic mail. Here's how I imagine it'll help me work less: simply knowing that I don't have an important email sitting in my inbox while I'm away. I don't plan on reading email everywhere I am, but rather just having the ability to put out any fires, or attend to urgent stuff from time to time might allow me to stay away longer. Maybe there'd be some peace of mind knowing I don't have to hurry back to my inbox -- then again, maybe it'd drive me nuts.

So I wonder what your experience is with mobile email. I'm looking into something that:

• Can connect to IMAP
• Is a decent phone as well
• Has a QWERTY keyboard (tiny tiny of course)
• Isn't gigantic

Blackberry? Treo? Sidekick? Nothing? Let us know, o' untethered ones.