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Sending & Receiving gmail on Thunderbird not working

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  • 5 have this problem
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  • Last reply by rappapoj

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I have spent the last two days trying to re-establish receiving/sending emails on my Apple MacBook Pro using Thunderbird without success. This problem developed suddenly about 3 or 4 days ago and only affects the MacBook, not any other device (I have an iMac and two iPads). I have gone through the instructions in Thunderbird's support pages and those in Mozilla with no success.

How do I fix this please? Would the easiest way be to simply delete the account xxxxxxx.gmail.com from Thunderbird on my MacBook and re-instate it by adding it back in?

All the setting for IMAP and SMTP are correct and the username/password is identical on all my devices.

I have spent the last two days trying to re-establish receiving/sending emails on my Apple MacBook Pro using Thunderbird without success. This problem developed suddenly about 3 or 4 days ago and only affects the MacBook, not any other device (I have an iMac and two iPads). I have gone through the instructions in Thunderbird's support pages and those in Mozilla with no success. How do I fix this please? Would the easiest way be to simply delete the account xxxxxxx.gmail.com from Thunderbird on my MacBook and re-instate it by adding it back in? All the setting for IMAP and SMTP are correct and the username/password is identical on all my devices.
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Chosen solution

If not yet done, turn on OAuth2 authentication in your account settings for the Gmail account. That goes for both, the incoming, and outgoing server. After a Thunderbird restart you'll be prompted for your Google credentials, and you'll have to allow Thunderbird to access your Gmail account.

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Chosen Solution

If not yet done, turn on OAuth2 authentication in your account settings for the Gmail account. That goes for both, the incoming, and outgoing server. After a Thunderbird restart you'll be prompted for your Google credentials, and you'll have to allow Thunderbird to access your Gmail account.

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I also have this problem. When I turned on the OAuth2 and restarted T Bird then a Google page pops up and it prompts me for my Gmail address. Then after I enter it, I get a message that it is an unknown address. Which it is not because I can use my browser and login to Gmail without any problems.

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I've tried this suggestion, and all the others I've found on Thunderbird pages. Would the best solution be to delete the Thunderbird app and then start over?