“It’s a bit unprofessional…”
Not the first time I’ve heard that. And honestly, IDGAF.
If I want to sign an email with “Have a(n) [insert positive adjective] day”, that’s what I’m going to do.
I’m human, and that’s my style. I won’t sacrifice that ideal for some sheepish convention.
Regards and best wishes and yours sincerely,
P.S. Remember to have an epic day.