Our ISP made a switch to Gmail across the board and moved all of its users to it, and my family absolutely couldn't stand it. It was confusing, difficult, and lacked some features. I have a feeling it may have been just the version that our ISP created though. Eventually I was able to get us to Windows Live Mail (without a Live account for my parents) and it's much like the Outlook Express they had before.
Good and bad men are each less so than they seem.
- Samuel Taylor Coleridge