Say I use Office 365 to pick up my email, all email I send is from my Office 365 address. I have a web app that sends email on my behalf from
email@example.com, which is set up as a forwarder to my Office 365 address. This is so that people can reply to those emails and I will get the replies.
Is there any way, using Office 365, that I can set the
firstname.lastname@example.org address as my from address?