Thunderbird Community Forum

Hello, I have a problem with Thunderbird that I don't understand and can't solve. Thunderbird can't connect to my IMAP account on the remote server perfectly even after a clean install. Incoming emails are downloaded, but only 82 out of 5600 outgoing emails. All login details are correct, I tried STARTTLS settings on the correct ports, but there is no change. I see in the Activity Manager that the connection between the server and the client is lost several times a minute. There is no network error, both I and the internet service provider have checked the connection. The client is running the Win11 operating system.

Robert

I have add several accounts hotmail.com in Thunderbird with out a problem but, I can't add hotmail.gr account.

I'm using Win 11 and ver 140.3.1esr (64 bit)

Thunderbird works perfectly except for just one thing. Every time I write any email it freezes after about 2 minutes. If it's a short email, it gets sent. If it's longer, before I can get to the end, the program freezes, and I have to use Task Manager to stop it. No problem receiving and reading emails. This started about a month ago.

I use Bitdefender, but it still happens with that off. Windows is up to date. Any ideas why this is happening? Thanks.

Hi I was using TB 142 without problems. When upgrading to 143 ou 144.B4 I have problems sending mails to all users after some times. Usually the first mails are sent immediatly but after around 10 mails, I have very slow response (varies from 5 sec to more than 1 minute and sometimes timeout). Usually quitting TB solves the problem but this is very annoying. I went back to 140LTS and sems to have no longer this problem. This was tested on many diffrent networks. I am running under Fedora release 42

Thanks

Hi, I just updated by account with 2FA

The stored passwords are all lost now, I can still see them in my phone (unsynced due to logged out) but cannot see any password in my PC.

Please help

I use Thunderbird on Windows and on Mac. I'm wondering why the startup time on Mac is significantly longer on MacOS. I'm currently on Tahoe 26.0.1 but Thunderbird has always been a slow starter. Can I change any setting to remedy this. At the moment I have two mail accounts configured both Gmail.

I went away for a few days and when I came back I was missing a bunch of local folders. I THINK one of my employees kids were banging on me keyboard. I know I should not allow them in my office or at least password my computer when I go away??

I could import from an old computer and at least have all the local folders from before I changed computers 2 years ago.     I have a feeling there maybe an easier way?

Running on a mac. ventura. 13.2.1 thunderbird 140.3.1esr (aarch64) thank you for any help.

-andrew

Have updated from 140.3.1 esr 32 bit to 143.0.1 release 64 bit TB and to windows 11 - uninstalled 32 bit and installed 64 bit and updated to windows 11 Following updates found that device sign in id (pin) was used to be in 32 bit missing from settings to access password but can show passwords. In reviewing the profile after update I note that Mozilla location service key, google location service key and safe browsing keys are missing (not sure what they were pre update). The key4.db file pre update was 1/3/22 but after update it is 10/10/25. The logins.json pre and post update is 7/9/25. I can see the default release profile and local only - use only the default release. My question is - has the 64 bit installation cleared all my keys/how can I check all my keys and how do I fix and ensure connections are secure?

Thankyou for any advice.

An old forum describes how to sync calendars in Thunderbird. Here is an easy solution - In the left-hand pane of your calendar page, right-click your calendar name/ export calendar - into a removable device. In your other computer - Tools/import/ import from a file/ choose to import calendar - easy!

I want to continue using TB but a few things really make me despair of it. But there may be workarounds. If I have a question, when did these people last send me an email, or have any of these people responded to something, there seems to be no way to get to a list. But. I found a way to do it. Using sqlite3.

I have been wanting a CLI for interacting with TB for a while. You know, that folder I have with 10k+ emails and if I click on it, the UI spins forever. What is even in that?

Now I can do this: 1) copy the global-messages-db.sqlite from the active profile to another place 2) run: sqlite3 global-messages-db.sqlite 3) ```sqlite> select m1.c3author, min(m2.date), max(m2.date) from messagesText_content m1, messages m2 where m1.docid = m2.id group by m1.c3author order by m1.c3author; ... ray kiddy <ray@ganymede.org>|1732124816000000|1759268233000000 ruby29@something undefined|1756740716000000|1756740716000000 salvatore@someother undefined|1758733831000000|1758733831000000 support@linode.com undefined|1755126295000000|1755126295000000 ... ```

Holy sender dates, Batman! Now I can see the earliest and latest email sent by any user. Now I can filter, sort, and see every person who sent me something in a time period. And whether it was 1 email or 1000, I just see the names and not an enormous amount of other information.

So, is this the only way to get this? Or the best? I have no idea. Please let me know if there is a better way, perhaps one using TB itself. It would be nice.

In the meantime, I will be wrapping this in a python call, doing some formatting and it will work and I can stop worrying about not seeing their email.

I have lost the indicator in the folder pane showing which folder I'm in. It used to have a small color tab in the folder pane on the left hand side. Indicating that the folder was selected. Any ideas to get it back? Thunderbird 140.3.1esr (64-bit)

I have just installed Thunderbird on Windows 11 and it has two very annoying new habits. When I click on an email it opens it instead of giving me a preview. And when I move an email to another folder it also opens that folder. Neither happened on the old computer so how can I get back to the way it used to be?

My problem has escalated. Before, I wasn't able to fix the constant request for password on that account. Now, after deleting the account on my laptop, I can't even add it back. Error message says "incoming server already exists." I do have another email account with the same domain, but this is not a problem on my desktop computer, only on my laptop. (It used to work find on my laptop, too, but it stopped receiving emails on 8/20/)

I have a message that is still listed after being deleted. When I highlight the messages listed above it and below it, I can see their contents with no problem. However, when I click on the "ghost message" listing in between them, I will see the contents of the last message viewed, not the contents of the ghost message that is highlighted.

Also, when I first open Thunderbird and highlight that ghost message first, the review pane is blank, like there is no message there. Then if I click on a different message, that message's contents will show in the preview pane. Then when I go back and click on the the ghost message listing, that pane is still showing the previous message's contents.

When I click on "delete" message, I get the constant blue indicator light in the lower right glowing and nothing happens.