I have been unable to receive or send emails via Thunderbird for months. This began when frontier sold their email service to YAHOO, which refuses to recognize my password for downloading to T-bird or for sending.
Tell me, in detail, how to make any required changes that will allow me to use Thunderbird again for all of my emails. Also, if you can tell me why this happened, I'd appreciate it. I do not think YAHOO (great name for it) should have the right to do this. I prefer T-bird; but cannot find a solution to this problem anywhere. Can you tell me what to do?
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Yahoo requires a different password when using an email client and requires OAUTH2 authentication. This URL may assist: https://help.yahoo.com/kb/SLN15241.html
these are common settings: imap.mail.yahoo.com, 993, SSL/TLS, OAuth2, email address
smtp.mail.yahoo.com, 465, SSL/TLS, OAuth2, email address
Yahoo requires an app password if the authentication method is 'normal password'. This applies to many desktop and mobile mail apps that don't support OAuth2 authentication. But since TB supports Yahoo's OAuth2, use the regular account password in the OAuth window when asked for access.
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