1. The address email@example.com is aliased to firstname.lastname@example.org. Mail sent to email@example.com reaches firstname.lastname@example.org.
2. HOWEVER, a reply to that email goes out from email@example.com NOT firstname.lastname@example.org.
3. FURTHERMORE, I can't compose messages and send them from email@example.com, only from the alias.
What a hassle! I am aware that the domain email issue has been ongoing for a very long time. Do I need to use a dedicated email client? Is this really the limit of the capabilities of the hosting service? Or am I missing something?