I've used this for YEARS.... though sadly it doesn't work anymore for Yahoo. When I try to check, I receive a notice that I'm signing in on my 2fa. No matter if I allow the sign in or not, the notifier doesn't connect. It works fine, however, with Yahoo accounts that do not use 2fa, only a u/p.
app stopped working 6 months ago only shows notifications to last email account opened all the other email account do not show (all accounts are are with outlook.com ) support has not responded in 2 weeks