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First - sorry if the post is messy, but I don't see a Preview option today

PRELUDE: When I create a email to send to Joe@hotmail.com, on clicking SEND, a popup wants a password for a different account:

EXAMPLE: (emails are faked here for privacy)

Assume I have the following email accounts:

1. john@fakes.xy
2. jane@morefakes.vc
3. fred@deftly.xc

I compose a email to john@fakes.xy. I click SEND, and there is a popup stating:

Status: Sending message... Progress {progress bar}

and second popup with :

Enter your password for jane@morefakes.vc on mail.{IP name}.com

and a third popup with:

Login to server mail.{ip-name} with username jane@morefakes.vc failed

I have attached a screen cap (redacted) as seen in actual.

SUMMARY:

• When addressing email to Joe, upon SEND, the errors show password to use is listing a different account.

I ran Troubleshooting Mode with no errors, except, same thing. Wants password from a different email account.

Thanks for reading this, ~r

Believe my T-bird account has somehow been corrupted. Takes forever to load on PC and always puts new emails in Trash folder. Often does not accept correct password. If I save / backup PROFILE, uninstall T-Bird and delete any Thunderbird folders on PC, if I restore per backup, will I be restoring the corrupted app. Don't want to loose email addresses, thousands of emails and email folder structure. Will a restore work? Thank you. Greg D

PS Version of T-Bird on laptop still puts all new email in Trash, but loads much more quickly, etc.

Links keep opening in new windows, and not within new or same tab. Shift key is not stuck and all toggles in the Tabs Opening/Interaction Settings field have been turned off

I like to use picture-in-picture mode to watch a YouTube video in the corner of my screen while editing an image or playing an online game (since I like having something to keep my brain active while I'm doing something). Recently, however, this has resulted in my computer locking up. I don't really know how to describe it succinctly, but audio becomes super stuttery and it takes a second or more to render a single frame. Last night this resulted in the loss of an in-progress image (don't worry, I took photos of my screen so I could recreate the image), so I want to figure out how to stop this.

Just to cover my bases, here's my specs:

Device name LAPTOP-AI6N0TEJ Processor 12th Gen Intel(R) Core(TM) i3-1215U (1.20 GHz) Installed RAM 40.0 GB (39.7 GB usable) Device ID BDD80B46-B5E1-4B25-9FA0-3F833BD30C05 Product ID 00356-07436-33870-AAOEM System type 64-bit operating system, x64-based processor Pen and touch No pen or touch input is available for this display Edition Windows 11 Home Version 25H2 Installed on ‎11/‎7/‎2025 OS build 26200.7840 Serial number PF4RQKQJ Experience Windows Feature Experience Pack 1000.26100.291.0 Manufacturer Lenovo

Sent and received. Please notice the asterisks. Where do they come from? John

Message Sent: Fantasia I and II Georg Phillip Telemann 1681-1767 Kleine Passacaglia Michael Kuntz 1915-1992 Fair Phyllis I saw

Message Recieved:

*Fantasia I & II* Georg Philipp Telemann (1681–1767)
         Telemann’s Fantasias capture the brilliance and balance of the
         Baroque era—each movement a miniature world of counterpoint,
         grace, and invention.
*Kleine Passacaglia *Michael Kuntz (1915–1992)
          A modern take on a timeless form, Kuntz’s piece builds lyric beauty
          over a gently repeating bass figure. (See insert for more)
*Fair Phyllis I Saw* John Farmer (1570–1601)

I had a similar problem. The Spam settings were being picked up by my ISP from my mobile. When I looked at the Spam on my mobile, I could mark each individual email as "Not Spam". When I did this, the email appeared in the Inbox not only of my mobile but of my laptop too. A new test email went straight into Inbox of both devices and not into Spam of either.

I hope this helps.

I got a new computer, and after installing Thunderbird, it took forever to get it set up with the information from my old computer. Now, the unified folders aren't working. All of my mail is going into each account's inbox. There's no option to choose anything on the unified inbox, only the same thing as the other inboxes have. Help, please!

On my PC - Initial problem was T-bird took forever to load and virtually all new msgs went to TRASH and I had to move to IN-Box. Per help from David - Saved off profile, and reinstalled thunderbird from thunderbird.net. No change. Then UNINSTALLED T-Bird (profile still intact). Now just attempts to open "Looking up imap.comcast.net", but won't open/connect and to close the app I must use WIN Task Master. Can't get to any msgs, etc. Also, in the past when I was able to open, the banner or bar at the top of the page had hundreds of email icons. I sometime have over 1000 emails in my in-box!! I have years worth of emails in folders on T-Bird which I don't want to loose. Help. Thank you. I have a "working" version (with the "trash" and slow loading issue per above) on my laptop, so I can access suggestions on that version of T-Bird. You could also send any suggestions to x@gmail.com

(PII redacted by moderator)

just installed thunderbird on my new windows 11 laptop (samsung galaxy book 5) and tried to add my comcast email account. i entered the address and password and it took me to an xfinity web page to validate my password for imap.comcast.net. since i'm not on my home network it send a code to my mobile phone which i entered successfully. it then asked my for the address on my account. i entered it and it told me it didn't recognize the address! I called comcast and finally got to speak with a human (no mI'veean feat). We verified that my xfinity account allows third party applications to access my email. That's pretty much all the help she could give me. i've run thunderbird on my home windows 10 desktop with no issues accessing my comcast email. Has anyone encountered this problem? does it have to do with windows 11 settings? any help would be appreciated.

I can login to https://support.mozilla.org (other wise could not post this question), but not to https://connect.mozilla.org.

in particular I want to vote for a feature request and when trying to sign in at https://connect.mozilla.org/auth/saml/login I get a 401. console output is: {POST https://connect.mozilla.org/auth/saml/login [HTTP/2 401 205ms]

POST https://connect.mozilla.org/auth/saml/login Status 401 VersionHTTP/2 Transferred1,57 kB (799 B size) Referrer Policystrict-origin-when-cross-origin Request PriorityHighest DNS ResolutionSystem

This page is in Quirks Mode. Page layout may be impacted. For Standards Mode use “”. login }

detailed message: { POST https://connect.mozilla.org/auth/saml/login [HTTP/2 401 205ms]

POST https://connect.mozilla.org/auth/saml/login Status 401 VersionHTTP/2 Transferred1,57 kB (799 B size) Referrer Policystrict-origin-when-cross-origin Request PriorityHighest DNS ResolutionSystem

   content-length
   	799
   content-type
   	text/html;charset=utf-8
   date
   	Sat, 07 Mar 2026 11:29:49 GMT
   server
   	Apache
   set-cookie
   	AWSALB=xdwz4UD6ihA/QLpHhHksEhIzHR15KQfcd/7IdLJliqZQK7PZn/xwZlJdf8ugU9M72lOoRc7YN+L9kzpG1K4sMVx/sYX0wC2VKTRy+59HyROuQsAMf1ashxKlBQb1; Expires=Sat, 14 Mar 2026 11:29:49 GMT; Path=/
   set-cookie
   	AWSALBCORS=xdwz4UD6ihA/QLpHhHksEhIzHR15KQfcd/7IdLJliqZQK7PZn/xwZlJdf8ugU9M72lOoRc7YN+L9kzpG1K4sMVx/sYX0wC2VKTRy+59HyROuQsAMf1ashxKlBQb1; Expires=Sat, 14 Mar 2026 11:29:49 GMT; Path=/; SameSite=None; Secure
   via
   	1.1 b27f21f2e46f0db2d89ec3930dfac728.cloudfront.net (CloudFront)
   x-amz-cf-id
   	_1FXUoJQsMgqPeftr5ZoAltA1DoHC9UpvDTJcH5hrhS5VzJxmq58NA==
   x-amz-cf-pop
   	VIE50-P2
   x-cache
   	Error from cloudfront
   X-Firefox-Spdy
   	h2
   x-frame-options
   	SAMEORIGIN
   	
   Accept
   	text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
   Accept-Encoding
   	gzip, deflate, br, zstd
   Accept-Language
   	en-US,en;q=0.9,de;q=0.8
   Connection
   	keep-alive
   Content-Length
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   Content-Type
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   Cookie
   	AWSALB=OX122lrCmIj0UJaWK6IL6mTv+SRRTqtlaYLkMcWlIjy1xcyd4nSFOXKIp0l0jEXkYni+woA26tgMYd4JXWlyYVJG/io/TqFt8IBZ/jgDr45xEtBJzZep4g61DoK/; AWSALBCORS=OX122lrCmIj0UJaWK6IL6mTv+SRRTqtlaYLkMcWlIjy1xcyd4nSFOXKIp0l0jEXkYni+woA26tgMYd4JXWlyYVJG/io/TqFt8IBZ/jgDr45xEtBJzZep4g61DoK/; LiSESSIONID=387B2D5E7461DA9F5FFD95601784C7F0; LithiumVisitor=~2OyUd9sp8yTOXtFbh~_GnfmGEeMvTWEQBVNl235FWcnrDINQY4nAZ-W4ZIV0BT18sFpQTKgGHQVL7KqDJvKLPpt1MspkSXKYeUrktbOg..; VISITOR_BEACON=~2pw0u6kkCpIXIWS5y~PfbjpQ8d7FQT_W5zlIXPnhE8U9JGVrFddR-p83RhMCBy27G_2xT-CEEZfCavgtM2nhnQBFXWoaPCMA3bSd_hHg..; _ga_R3H4BDP5J2=GS2.1.s1772882610$o1$g1$t1772882987$j40$l0$h0; _ga=GA1.1.638686038.1772882610
   DNT
   	1
   Host
   	connect.mozilla.org
   Origin
   	https://auth.mozilla.auth0.com
   Priority
   	u=0, i
   Referer
   	https://auth.mozilla.auth0.com/
   Sec-Fetch-Dest
   	document
   Sec-Fetch-Mode
   	navigate
   Sec-Fetch-Site
   	cross-site
   Sec-GPC
   	1
   Upgrade-Insecure-Requests
   	1
   User-Agent
   	Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:148.0) Gecko/20100101 Firefox/148.0

}

thanks for looking into.

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

Is there anyway in the setting to stop a shortcut from being added every time I visit a site? I only want sortcuts that I use. I have attached a screenshot circling the ones that keep popping up as an example.

Respectfully, Rhonda

I have both a Microsoft 365 email account and a outlook.com email accounts. I'm using version 148.0. Both account set up just fine. When I delete an email from either account after a couple of seconds I get a message saying "The current operation on 'Inbox' did not succeed. The mail server for "the account name" responded; [TRYCREATE] The destination mailbox could..." that all I can read. Why?? It is only on the Outlook accounts. I have several other account set up and they all delete the emails.

just installed thunderbird on my new windows11 laptop and tried to add my comcast email account. i entered the email address and password and it sent me to a comcast web page to validate my email on imap.comcast.com. i am not on my home network so they sent a code to my phone which i entered successfully. it then asked for the address on my (comcast) account. i entered it and it told me it didn't recognize the address. I called comcast and finally got a human to talk with. we verified that my comcast account was set to allow third party access to my email. that's all the help she could give. i've run thunderbird on my windows 10 desktop with my comcast email for years with no problem. Has anyone encountered this problem?