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For months now, when deleting emails in Thunderbird, it sometimes creates multiple records of the same deleted email in the Deleted Messages folder, sometimes several hundred copies of the same email. It doesn't do it for all deleted emails, and I have not been able to discern any pattern or cause. As a result, my wife's Deleted Messages folder has 8,700 deleted emails in the last 3 months, far more emails than she receives. Edwin Miller

Windows Live Mail finally stopped working for me. I tied both gmail desktop notifications and Outlook and kept having the same problem: I'd get a pop-up for 3 seconds saying I had an email in another account and then it would disappear. There was no record of it in "Notifications" like there was for WLM.....so, if I didn't see it pop up, I'd never know.....which takes away the main purpose of having it.

So, I decided to try Thunderbird and get the same problem. A very brief pop-up saying I got an email and then it vanished....with no record. So, if I was in the kitchen or bathroom, I'd never know about it.

Any suggestions?

Att made me change my account password. Now Thunderbird cannot access messages. I have entered the new password in out going and incoming but there seems to be more to this than that because nothing happens. Where do I have to put in new passwords? Thanks so much. Marjorie

Hello. I am using Thunderbird version 128.14.0esr on POP OS 24.04. I use a default dark theme. It seems to me that there is a problem with the way the dark theme is applied, which breaks consistency. For a while now, my message panes appear with black text over a white background, as opposed to white text over a black background, as it used to be. Only when I "Turn dark mode off" with the dark mode "drop" in the message menu does it revert back to normal. This is quite annoying as it has to be done every time I want to read an email. Is there a solution to this minor but annoying problem? Thanks.

I recently migrated Thunderbird from my old Windows 10 computer to my new Windows 11 computer. I seem to have resolved all my issues with Thunderbird except for the following: In the Calendar, I have all my events from 2014 forward until the end of May 2024. After that time period I only have 2 events, when I know for a fact that I had many more. I would like to recover this data for historical purposes because it contains many medical appointments. Does anyone have any ideas about how this can be accomplished?

My Thunderbird (version 115.12.2) is running on a Windows 11 system. My profile has multiple accounts configured as IMAP to multiple email services. I also have the Status Bar and Activity indicator enabled. Randomly, both indicators will show busy for an extended period of time. When I view this in the Activity Manager I see one or more folders hung for 10 or 20 minutes downloading one message out of several. This occurs in multiple accounts and servers.

I have researched this and attempted the fixes presented. I have cleared the cache files and compacted and rebuild email folders as suggested, but the slow update still occurs.

Then I decided to try and capture a ProMon.exe trace to see what is happening. What I found was Thunderbird.exe was spending all of the time while hung access the following file: C:\Users\MyUser\AppData\LocalLow\Intel\ ShaderCache\4a5eb0e65e559fc08e65ecb2fa9d650817ae895582a7a7ede162866d3e47a05a, like it was stuck in a loop.

When Thunderbird is operating normally, it is accessing this file but only for short period of times. Research says that it is ok to delete the files in this folder. I did that and it seemed to help for awhile. But it started happening again.

Does anyone have any idea what could be causing this? Is there a Windows thing to look further into? Any help would be greatly appreciated.

Hi! I can't log into my Thunderbird account. It won't accept the password, and before it locked me out altogether, no emails were showing in my inbox.

Can you please advise? Many thanks, Annie

I used to troubleshoot when Thunderbird would fail to download new messages by looking at the last successfully downloaded email. But I can't find the error log. I'm pretty sure older versions allowed you to see the error log under Tools. But it isn't there and developer section is not helpful. I have tons of message filters going into folders so it is impossible to identify the last successful email download.

How am I to fix this issue if there is no longer a way to see failed email downloads via the error log?

I wasn't happy with the UI changes burying the menus into the hamburger on the side, but figured I could live with it. Not sure the benefit, maybe it looks cleaner? But removing functionality at the same time is really NOT helpful.

Anyone have any ideas how to find the error log or find the email causing Thunderbird to stop seeing downloadable emails?

I cannot close the Thunderbird email app on Samsung Galaxy S25 Ultra Android 16 One UI 8.0. The back arrow in the navigation bar no long closes the app windows. Have to use the back to home center button. Is there a solution to this problem?

I inadvertently clicked on "Hide images" on a newly received email. I cannot find how to go back and permit the images to be shown on that email.

I'm using the most recently updated Thunderbird Desktop Version 140.2.0esr | Released August 19, 2025

I tried to get into my emails via Thunderbird but am told password is incorrect. Checked with email provider (Empire Access) They say password and settings are OK. Have been able to access their web mail using password. Also, since yesterday have lost Firefox and all my bookmarks. Something is very wrong.

Hi, I’m a student working on an assignment to set up an email server from Rocky Linux (server) to Ubuntu (client). I have configured Postfix, Dovecot, IMAP, POP3, SSL, SMTP, and DNS on Rocky.

However, when using Thunderbird on Ubuntu, I get:

"Server powerrangerserver.gogogo.com has disconnected. The server may have gone down or there may be a network problem."

All services are running, and the firewall is not blocking connections, but I cannot figure out why Thunderbird cannot connect.

I have tried all the solution from google to chatgpt. pls do help

A week or so ago my Thunderbird (140.1.0esr) reminder dialog stopped showing up. No idea why. Calendars > properties does have "Show Reminders" checked. Account > Thunderbird Settings > Calendar > Show the reminder dialog (X) is checked. I've restarted and rebooted (Linux).

I can add events to the calendar and they show up on my phone. I did update to 140.1.0 10 days ago, so perhaps this is a problem with this version. I'm considering reverting to the previous 128.9.1esr version, but it would be great if someone had a solution for this.

THX

The time shown in the Date column for TB is 2 hrs earlier than the actual time. The TB error console also displays the wrong time.

TB 128.6.0esr on freebsd-13.4-RELEASE-p5

System time is set to and displays as MDT (US Mountain/Denver) $ date Fri Apr 18 12:29:52 MDT 2025

TB error console: Date() "Fri Apr 18 2025 10:31:04 GMT-0800 (GMT-08:00)"

about:config timezone settings: calendar.timezone.local MST calendar.timezone.recent [] calendar.timezone.useSystemTimezone true mailnews.sender.date_senders_timezone false

Mail headers show proper time in mail file: Received: from mail-yb1-f187.google.com (mail-yb1-f187.google.com [209.85.219.187]) ... for <xxx>; Fri, 18 Apr 2025 11:55:40 -0600 (MDT) Received: by mail-yb1-f187.google.com with SMTP id 3f1490d57ef6-e5740c858besf2902470276.2 ... for <xxx>; Fri, 18 Apr 2025 10:55:39 -0700 (PDT)

And display properly in the TB headers display: Date Fri, 18 Apr 2025 11:55:29 -0600

Yet TB displays 2 hrs earlier in the Date column: 09:55

How to correct? I had set the Calendar timezone manually, but it is now set as above. I tried deleting calendar.timezone.local but it is rewritten when TB exits.

Hello,

I'm running Thunderbird Beta email on two Windows 11 computers, one I7 one I5. The former I notice reports a 32 bit version the smaller machine (latest) a 64bit version.

I wish to know how to update the 32bit to 64bit. Is it a simple matter or likely to lead to a corrupt installation. Perhaps I shouldn't be concerned but now have become aware of the two different versions. Both machines are active with my own accounts as the I5 serves as a backup computer.

I welcome you're advice. (I don't recall being offered a 64 bit version when I installed on the I7 some 6 months ago. Perhaps it wasn't available?)

Kind Regards, Alan from the UK

Been using thunderbird for at least 20 years, and learn to live with the bugs and wait for the next release waiting and expecting the issues of the previous release were solved in the next one.

I've been using S/MIME certificates for many years without problem. I've recently installed a new certificate wich is correctly installed in my personal repository expiring in 2027. Since version 141 this certificates shows as selected, but is not used. Updated to release 142 ... but the problem persists.

I'm attaching a screen capture were shows the error message and the Developers Console showing the exitcode when trying to send a mail with digitally signed.

Please also note (i don´t know if this is related or not) that when y check the certificate in the account the hexadecimal ID of the certificate is not shown. If I clear the certificate and select it again it is shown in this screen. Attached to this you can find a capture of what mentioned before.

Please let me know if more information is needed.

Thanks / Regards

Ariel Pereira

I have multiple gmail accounts set up on Thunderbird. They were all working fine until I traveled overseas and came back. Then, all of a sudden, 1 gmail account stopped working. The rest kept working fine. I checked the settings and they were correct. I removed the account and tried to set it up again (about 10 times), but kept getting the same error message: "Unable to log in at server. Probably wrong configuration, username or password." The automatic configuration passed and I even tried manually configuring to the recommended settings to no avail.

The only thing I can think of is that when traveling overseas and trying to get online, Thunderbird and/or Gmail asks for further security verification, and I just avoided using Thunderbird altogether while abroad. Upon my return, I started getting this error message. It is extremely inconvenient to have to use the Gmail interface for only 1 email (my main email!). Does anybody know anything I can do to repair this? I'm almost tempted to use another email client altogether to make my life more efficient as the new setup is not sustainable.