unckt Said:
"mail password: Mail keeps asking me to input my password for certain mail accounts all of a sudden. It also keeps rejecting the passwords I input. How do I reset the password in these mail accounts? Thanks for your help: LKt"
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Use a New App Password:
Do you use an App Password? If so, try a new App Password. Sometimes, changes (i.e. updates) are made to the device, and then mail server syncing becomes an issue (which is what a new App Password it intended to fix). Go here for gmail: Sign in with App Passwords - Google Account Help - Google