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 (email@example.com) 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 "firstname.lastname@example.org on behalf of OtherAccount [email@example.com]".
If anyone is interested in the technical stuff, the headers are: