Hi, just wanted to share my excitement over the new Gmail feature with anybody who is experiencing the same. This new feature really rocks: I now can use my email address (firstname.lastname@example.org) and run it through Gmail. Also, I can set up user accounts. This is terrific!
I believe they have had this functionality for a while. It is nice, but it's definitely not transparent. For instance, if you send an email to someone using Outlook, then it shows up as being from "email@example.com on behalf of OtherAccount [firstname.lastname@example.org]".
If anyone is interested in the technical stuff, the headers are: