I use the legacy free edition of G Suite, which allows you to create additional domain aliases (but not secondary domains).
For example, my primary domain in G Suite is @domainA.com, and I've sent up a domain alias @domainB.com
When I send an email address to me@domainB.com, I receive these emails into the inbox of that account (i.e. me@domainA.com)
But how do I send emails from me@domainB.com, e.g. from Windows 10 Mail?
(It's possible to do this from the Gmail web interface by visiting Settings > Accounts > Send Mail As)
I have tried the following to no avail:
- set up an alternative "from" address in Windows 10 Mail (there is no option)
- set up the account using the me@domainB.com ("the account can not be found", it's not technically the account username)
- set it up using plain old IMAP in Windows 10 Mail