We keep receiving "Unable to verify account name or password" when trying to use mail.

shiyuma8888 wrote:

did many times delete and add the account, still cannot verify it.

Test your credentials on the mail provider's web mail interface, check whether your mail provider requires tokens to log in, check whether your mail provider requires additional steps to login as Google GMail can require, then confirm that what you're entering for settings within the Mail app configuration process are correct as determined by your mail provider and their mail server configuration, and then check with your mail provider support folks.

Links to more info:

Add or remove email accounts in Mail on Mac - Apple Support

If Mail on your Mac keeps asking for your password - Apple Support

Google Sign in with App Passwords authentication

did many times delete and add the account, still cannot verify it.

Remove and re-add the account within Mail, and try again.

Add an email account to Mail on your Mac - just use this template to get to the right place to Remove the Account and same template to add it back

What are the exact steps to remove and re-add the account within Mail. Help is appreciated