I use G-Suite for business. I have the main domain (Let's call it example.com) and a number of secondary domains (we'll use example.co.uk for this). I have set up aliases so that I can receive email sent to firstname.lastname@example.org and also email@example.com.
Using GMail on the web I can select a default email address for outgoing email. So, although my primary address is firstname.lastname@example.org my outgoing email appears to come from email@example.com
So far, so good.
Now I want to do the same thing on my Android phone and tablet.
How can I set up Gmail for Android to use my alias firstname.lastname@example.org instead of my primary address email@example.com?
Note that I don't want to reset the phone and sign in with a different address. I just want to change the GMail alias.
One answer to this question suggests it's not possible, but that was five years ago. Has anything changed?