I have 4-5 e-mail addresses. I have no problem consolidating all of them to forward to my Gmail app on the G1. The problem I have is when I send mail, sometimes I need the FROM to show a certain address and sometimes a different address. There is no way to do this from the Gmail or the Email applications. I used to have this on the Sidekick. It's the #1 thing I'm missing from the G1.