Unless you make a similar change to your Thunderbird Account Settings, Thunderbird will no longer be able to either retrieve emails from your Gmail account or send emails to third parties via your Gmail account. Without any direct notice to its Outook and Thunderbird users Gmail has changed the required Authentication Method from Normal Password to OAuth2 Google Has Changed The Required Authentication Method If you use Thunderbird or some other “front end” to receive and send emails from and to your Gmail account, Thunderbird has probably been denied the ability to log-in to your Gmail account even though your password is correct and even though you can manually access your Gmail account at Īlso, the access denied error message does not specifically say how to fix the problem, namely change Thunderbird’s Authentication Method setting from Normal Password to OAuth2 for both the incoming server and outgoing server (SMTP). Google has recently changed your ability to access your Gmail account from Thunderbird and Outlook. The solution for that was for Verizon to delete my email account and redefine it, all problems went away.Īnyway, I don't see any email problems, and haven't for months.By David Grace ( Amazon Page - David Grace Website) I know a couple of years ago I had a problem where my email account was known on some of Verizon's email servers but not others, people sending emails to me would sometimes get a bounce message, resend and it might go through, might not, very unpredictable. Verizon has multiple email servers, my guess is only some of them are messed up, maybe only one. It does not appear to be a 'system wide' problem, and if it was I think there would be way more posts here than there are. So Verizon email is working exactly as it should for me. What is the definition of a '3rd party email program'? I just used Outlook Express to send an email from one of my Verizon accounts to another, then went into the webmail application and could see the email just fine, then went back to OE and downloaded the email (set to not leave a copy on the server), went back to webmail and the email is gone. At least until Verizon resolves the problem on their end. go into your settings and set it to 'leave a copy on server' and this is supposed to temporarily fix this issue. My buddy in tech support just sent me a message saying that the duplicate email problem is a system wide problem.

Thunderbird google play