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Hi! Since a few months, I face the problem that Thunderbird stalls and is inaccessible for several seconds (>20) when a screen refresh happes or sometimes when for example a windows message pops up. I disabled/ininstalled all add-ons and also have reset all setings to their defaults. Has someone the same problem or has a hint for me? Thank you!

It went away for a while but now it is back. When I select the text it usually (but not always) resolves. However it is a pain to keep stopping to do that.

I've tried the existing fixes but they either don't work or stop working after applied.

A bug perhaps:- If I highlight various messages at once (I use shift and arrow) and then I press delete. When i subsequently navigate to any other message I can't read it, instead I see this message until I quit and reload Thunderbird: We're sorry, but we can't display this conversation, because the messages have been moved or deleted. Has anyone else noticed this and, better still, do you know how to work around it. I'm using Unified Folders by the way, in case that's relevant.

Start up has been lagging for the last 2 weeks or so. When I open the program I see "no emails found" and the circle of death. I have to wait for 20-30 seconds before my email accounts show up and again while they download. Anyone else having this issue or is it just me?

I have two installations of Thunderbird on two different computers 2 different locations, both are new installations. Both are on Windows 11. The one at home, works perfect, the one in my second home too except the unified toolbar is unresponsive, whatever I click there it doesn't respond, The X doesn't close the program, the - doesn't minimize anything, just nothing happens, any advise?

When I first open K9Mail 16.0 or after scrolling to the top of the message list, the message does not disappear from the list after I open a message, select move, and choose a folder. The message will no longer be clickable after I do this. However, it will remain displaying in the list until I start scrolling the message list, at which point the list updates and removes the moved message.

Please fix this bug.

Thanks.

I've been using Thunderbird for many years, and its up to date. I've had more and more problems with choppy response times lately. It "freezes" for short periods where the interface stops responding for half a minute, or a minute or so before I can do anything. It always comes back (never crashes, shuts down). Today was some of the worst where it was minutes before I could start using it.

My junk and trash folders are empty, and I've done a compression and run the cleanup operation on a bunch of folders. My Inbox is empty. I only have 2 pop accounts. Its not when its retrieving or sending email though.

Hi to all ! On a MacBook Pro under Sequoia 15.3.1 whenever I launch T'bd (128.8.0esr) it opens but accepts no command and the message screen is empty. The CPU usage is about 25%. Nothing else of importance runs on the computer. The same happens sometimes in the middle of a session. I removed Norton 360 just in case: no help. I could not correlate this behavior with any change I or the software updates did (it worked perfectly well until ~end 24). When I wait (15-30 min) and the messages finally appear. I tried killing an relaunching T'bd but it does not make much of a difference. Would someone have an idea where I could search to solve that? Thanks in advance for any help. Max.

I have just upgraded to Thunderbird 102.15.1 on my laptop and have a problem with right-click menus on folder names.

The menu appears for a brief instant and then disappears. If I move the mouse cursor slightly then it is redrawn and behaves normally.

Is this a known problem, i.e. requiring a further upgrade?

Comment, not a question. My now obsolete laptop ran Ubuntu 14 and its now 15 year old Thunderbird. Worked wonderfully well. My current laptop running Ubuntu 22 and Thunderbird 128.12.0 has driven me nuts since I got it. Slower than a snail loading. Confusing layout and function trying to group related messages into threads. I DO NOT LIKE IT.

I understand many of your customers might love the current Thunderbird for what they do with it. Can you somehow make available the older version of Thunderbird without all the fancy updates?

Hi,

Since updating to Thunderbird 140.7.1esr (64-bit) on Windows 11, moving messages from Inbox to any folder takes about 7 seconds.

Details:

Account type: IMAP (Cogeco)

Happens in all folders

Inbox has ~600 messages (not large)

Was working normally before the recent update

Delay occurs every time moving a message from Inbox to another folder

No freezing — just a delay before the move completes

No antivirus changes

Issue started immediately after update

This appears to be related to IMAP sync behavior introduced in 140.x.

Has anyone else reported this, or is there a known regression?

Thank you.

Hi

Long-term Thunderbird user and in the past couple of months Thunderbird on my PC on connecting to my mail server goes to a time out (about a minute?) before then downloading new messages. Connecting from my laptop is instant.

The PC - which is relatively new - performs well otherwise.

Checked settings on both and they are identical, save for the laptop.being 64-bit and the PC 32-bit versions.

Any ideas for me to try?

Many thanks

Rick

When i minimize, it starts "eating" ram the computer crashed when it consumed 59GB of ram.. suspect memory leak.. One solution is turning it off after checked for mail...But i kinda want it minimized so i don't have to check by starting it every now and then..

This is an odd one I've not encountered before. I have TB installed on 2 laptops at home. They are up-to-date with 128.6.0 installed, and both are using the same wi-fi system.

All of a sudden a few days ago, TB on one of the laptops, but not the other, became noticeably slow in deleting messages. It now takes a few seconds for what before always happened instantly (and still does on the other laptop).

Not the end of the world but it's annoying and I'm hoping there's an easy fix.

Thanks for any help.

Andrew