Yahoo email going to multiple Thunderbird inboxes
A yahoo window (not an email) appeared on my PC asking me to sign in. Since I use Thunderbird to access multiple Yahoo accounts (att.net) email, and I thought there may have been a service disruption, I signed in. The sign in prompt was for our family's main email account, which I will call A. I signed in with a different att.net email account, which I will call B. Now my email for account B is showing up both in the both the account B inbox and the account A inbox in Thunderbird. Thankfully the issue is only on my computer, not syncing with / affecting other family member's computers that use account A. The email is all fine on the yahoo server when I check there. The account settings in Thunderbird are correct for both inboxes. I have tried logging in to yahoo again as Account A, restarting Thunderbird, and restarting my computer, which have not fixed the problem. I don't know how to fix Thunderbird so the account A email from yahoo goes to the account A inbox in Thunderbird. Any help would be greatly appreciated.
Modified by pamelapnorris
Chosen solution
Update: my problem is now resolved. Last night yahoo prompted me again through an individual pop up window to log in. That reestablished the connection between the att.net email account and Thunderbird.
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If an account, Yahoo or AT&T, uses the Yahoo servers in TB, i.e. imap.mail.yahoo.com or pop.mail.yahoo.com and smtp.mail.yahoo.com, the authentication method should be OAuth2, and sign-in window you see is the OAuth authentication window.
https://support.mozilla.org/en-US/questions/1348520
If an AT&T account accesses inbound.att.net and outbound.att.net or imap.mail.att.net and smtp.mail.att.net through TB, the authentication should be 'normal password', but a secure mail key must be used in TB in place of the account password.
https://www.att.com/support/article/dsl-high-speed/KM1010523/
Are your accounts properly configured?
Hi sfhowes, Thanks for your reply. Everything looks properly configured. I am stumped. For now, I am viewing the family email account using mail.yahoo.com as a work around. The only bright side is that what happened did not sync with the email account on my husband's computer, so his Thunderbird inbox for the family email account is not affected.
Chosen Solution
Update: my problem is now resolved. Last night yahoo prompted me again through an individual pop up window to log in. That reestablished the connection between the att.net email account and Thunderbird.