I don’t understand “stresses me out with the deluge of emails”. If you’re getting tons of emails that you don’t need or want, take a minute and unsubscribe from those mailing lists. If not, set up filters to do whatever with those kinds of emails. Idk I guess I’ve always been pretty organized when it comes to emails. Appending my email for each service or site I sign up for etc.
Anyway I just use the stock mail app on my phone.