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I access Thunderbird through AOL. I have a completely separate yahoo email account which I do not access with Thunderbird. Do I need to do anything with respect to the new "authorization protocol known as OAuth2 with PKCE"?

Because gmail is removing support for "Check mail from other accounts", I'm thinking of switching to Thunderbird. The current size of my 18-yo gmail account is 62GB. But gmail is in the cloud, and profiles are on the device. Assuming Thunderbird profiles would have a similar size, this would be a nibble on my desktop, reasonable on my 1TB laptop, but half my total storage on my android Pixel 7. Can I limit my mobile's profile to the previous year or two of email? Are there other solutions? Thanks.

In the latest version 148, the moment I enter the login credentials for a second Yahoo account and click continue, Thunderbird simply copies the mail folders from the first Yahoo account and does not show the mails/folders for the second yahoo account. This is despite the fact that Thunderbird displays the correct name for the second Yahoo account as well as the correct username for the second Yahoo account in the account settings. I have tried: 1. Setting the 'mailnews.oauth.usePrivateBrowser" to True in the Config Editor. 2. Deleting and adding the second Yahoo account after restart of Thunderbird as well as restart of the PC. 3. Manually configuring the account settings while adding the second Yahoo account.

Please advise what else I can try. Thanks and Regards

re: OAuth2 Authentication for Yahoo, AOL and ATT

My settings selections don't really follow your help descriptions to the letter,so..., also, I already have 2 accounts on 2 platforms and they seem to already be configured with SMTP outging servers using OAuth2.

I'm confused since I'm now on 140.8.0 and have not needed to change a thing, contrary to expectations set from T-bird app popup warning and Mozilla article.(?)

I am working in Japanese but this site changes to English version and I cannot ask question in Japanese. So I do not know how English words are shown but I try to translate Japanese message to English. I have been using this Mozilla thunderbird for many years and have installed in several PC's. And now I bought a new PC Win 11. I downloaded software and message like that Account setting is found in Mozilla ISP data base. I proceeded as instructed and acknowledged warning. Then message is shown like this cannot logged in server, check if username, password or setting. I renewed password but still same message is shown. I would appreciate kind help.

The https://support.mozilla.org/en-US/kb/thunderbird-and-yahoo article is ambiguous. Does mailnews.oauth.usePrivateBrowser only need to be set to true if you have 2 accounts from the (Yahoo, AOL, ATT) set? Or if you have any 2 accounts, including, for instance, 1 Yahoo! account and 1 Gmail account?

Trying to add twc email to this email manager first said UN /pw not correct , finally changed password still not going thrgoogle states change email charter area to mail.twc.com still won't go thru. Twc is my main email so if it won't load up I'll have to use something else what else can I do? Thanks Lora

I had a Gmail address set up in Thunderbird on my old computer (Win 10). I had to get a new computer with Win 11. I have my Earthlink addresses set up okay.

But I've been unable to properly set up the Gmail address. I enter all the information, but the account vanishes from T-bird. All I have in Thunderbird is a Thunderbird Tab with Google info. It's a full page which might not come out clear with a screenshot, so I'm copying what's on this Tab ....

Google Account

   <- Mozilla Thunderbird Email has some access to your Google Account

Access you’ve given to Mozilla Thunderbird Email Mozilla Thunderbird Email has some access to info in your Google Account, including info that might be sensitive. You can always remove this access. Learn about the risks

   Access given on:  April 20, 2025
   Web address:    https://www.thunderbird.net

   Mozilla Thunderbird Email can:  Read, compost, send, and permanently delete all your email from Gmail -
   This app wants permission to do anything you can do in your Gmail, including:  (Read, compose, Add,       

ETC.)

   If you remove access 
   You might not be able to use some Mozilla Thunderbird Email features.

Another TBird Tab has: Keep track of your connection with Mozilla Thunderbird Email Mozilla Thunderbird Email has some access to your Google Account To use some Mozilla Thunderbird Email features, you gave Mozilla Thunderbird Email some access to your Google Account. This access might include sensitive info. Etc,

BUT I don't see the gmail email account itself. It had been with the other accounts, but it's not there anymore. PLEASE give me step-by-step instructions so I can access this gmail account.

Kami

Please assist,

Xfinity Logo Upgrade your email account at no extra cost

Your invitation to upgrade your C‍omcast‍.‍net email account to Yahoo Mail is still waiting for you. Move your email account to the Yahoo Mail platform today to start enjoying better features, enhanced security and a top-rated mobile app. Best of all, we’re offering you this upgrade for a limited time at no additional cost.

Sign into your email through webmail at connect.xfinity.com and follow the prompts to accept Yahoo’s terms of service. It’s quick, easy and secure.

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   Your email address
   Your messages, folders, and contacts

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   Simple sign-in with Yahoo Mail
   Dedicated support for your account
   Enhanced security and protection
   Built-in calendar and smart inbox
   Stay connected with their top-rated mobile app

The following email account(s) are eligible to upgrade:

   germainr@comcast.net

If you have more than one email account, you'll need to sign into each one that you want to upgrade.

Please note: If you use a third-party email app like Apple Mail, Outlook, or Gmail, you’ll need to update your app settings to continue accessing your email through that app after you move to Yahoo Mail. To learn more about Yahoo’s email service including third-party email settings, please visit welcome.yahoo.com.

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How do I setup Thunderbird to accept this change? My current email addresses are: rdg_tech@comcast.net germainr@comcast.net

In addition I have AT&T as my internet provider and they set me up with a Yahoo email address that I do not use: acsl700a@att.net

In advance Thank You! Richard Germain

I use Thunderbird with AOL. I have a separate Yahoo email independent of Thunderbird. Do I need to do anything with respect to Thunderbird switching to OAuth2 with PKCE?

I already have two Exchange email accounts using Exquilla that were created in earlier T-bird versions, they work in the latest version as well. I am trying to add a third exchange account, I enter the email and password do auto discover and get the following error; Invalid or missing password: password does not exist in the directory for this user. Trace ID: b2766d8c-6b02-4879-ab77-e30177281600 Correlation ID: 220ef2bd-c4b2-42a9-9414-d4f7bc0dae35 Timestamp: 2026-03-06 02:43:34Z

An Autodiscover site was found, but we could not find a usable entry. This is probably because your server does not support Exchange Web Services (EWS). If your server does not support EWS, then ExQuilla will not work for you. If you believe this to be in error, try manually entering the EWS URL.

I know the message is wrong since I have two accounts that function. I have gone through the manual configuration as indicated online and still have no success just says "URL test failed". I was hoping this latest version would have another way to be able to enter information to get around the failure. Any guidance is greatly appreciated.

I cannot seem to get Thunderbird to successfully connect to my email server on Network Solutions. Neither POP3 or IMAP works. I added an autoconfig of mail.<domain.ext>.netsolmail.net but this did not work. I am using the recommended ports and SSL/TLS settings. I can see from the Thunderbird Tools->Activity Manager that the connection is being refused. I can log into the mail account directly through the Network Solutions web access process. I used to just use a .forward on this account, but now I would like to set it up as my primary email server. Maybe there are other advanced settings on NS that need to be changed. Anyone know if there is something I am missing? I have changed the autodiscover to the autoconfig above in the CNAME and have map, mail, pop and smtp set to values recommended by NS. Do I need to add back the autodiscover setting perhaps? Many thanks for any suggestions.