Send from Address Change based on recipient
If I compose an email to a certain domain, for example email@example.com
and I have an email address from that same domain(firstname.lastname@example.org), the send from email address could automatically change to that domain.
Rob Chron shared this idea
Kevin McFadden commented
I think outlook for iOS does this and it's awesome. Too often I forget to change my from address when I send work email.