This is a general tutorial on how to setup your corporate exchange email on the iPhone. The instructions are the same no matter if you have a 1st Gen, 3G or 3GS iPhone. However the Copy Paste signature wont be available unless you have iPhone OS 3.0.

So you’re stuck using Gmail in a web browser, somewhere it lies lost in tab oblivion… getting no respect. There is hope! Its called Mailplane App.

Google released CalDAV in 08 then followed up with the application called Calaboration. This simple app will get your Google Calendar and iCal to play nicely together via Bi-Directional sync.