Ok, how many of you experiencing this problem are using a regular mail account using the "email" app? Not gmail.
Of those using the regular mail, how many are using a Yahoo account?
I could not delete my Yahoo mail account as it continued to say "invalid credentials" which is ridiculous.
I used Titanium Backup to freeze both the email app and authenticator and the notifications went away completely!
I could care less about the Yahoo account personally.
So now if someone would be willing to look into why this is happening, that wood be helpful.