This was from a 2011 post i made about using gmail with my domain names.
On December 16, 2011 at 09:14, jberger said...
Yes, it's easy and well supported in gmail.
While in you on logged into your gmail account, look for the gear icon and choose mail settings. Look under accounts, then add those domains to the "send mail as" feature. this will let you send mail from gmail as if you were logged into the other account. I do this for a number of accounts in gmail and it works well. You can even specify a different signature per "send as" address.
I don't know whether or not this still works. My gmail account was created a week after gmail went online so i think i may be grandfathered in. Newer gmail accounts may need to pay for "G Suite" (new name for paid google subscription)
[Link: support.google.com]
