Thunderbird Community Forum

Hi! I'm trying to set Thunderbird as the operating system default under Win 11. I tried to follow Mozilla's instructions: 1. Open the Settings application by pressing and releasing the Windows Start button, then clicking the gear icon. 2. Click the Apps icon, then click Default Apps in the list. 3. Click the icon under the heading Email to show your choices. 4. Select Thunderbird. The trouble is that at n. 3 there is no choice. There is only 'OutlookAccounts' and this item cannot be deleted or replaced. Can you help? All the best, Robifiori

Guten Tag, ich arbeite mit Thunderbird auf Linux Mint. Jeweils in den aktuellsten Versionen: Linux Mint 22.1 Cinnamon Thunderbird 128.11.0esr (64-Bit)

Auf meinem bisherigen Rechner begann Thunderbird mit dem letzten Upgrade von Linux Mint langsamer zu laufen. Da ich mir nicht anders zu helfen wusste, habe ich in einen neuen Computer investiert. Obwohl der Rechner jetzt deutlich performanter sein sollte, hängt Thunderbird mindestens genauso wie vorher. Zum Teil ruft Thunderbird auf dem neuen Rechner auch keine neuen E-Mails mehr ab. Ein Neustart korrigiert das zwar wieder, aber beim nächsten Start kann es dann wieder genauso sein.

Alles, was man in den Foren findet, um Thunderbird schneller zu machen, habe ich erledigt. Cache gelöscht, im abgesicherten Modus gestartet (da ist Thunderbird genauso langsam). Auch verschieben von Nachrichten in Archivordner brachte keine wirkliche Besserung.

Ich nutze Thunderbird für 7 Kalender (zum Teil lokal) und 10 E-Mail-Adressen bei unterschiedlichen Anbietern.

Als Add-on habe ich DKIM Verifyer installiert und aktiv.

Ehrlich gesagt, bin ich inzwischen ziemlich verzweifelt, was das Thema angeht. Witzigerweise lassen sich die Entwicklerwerkzeuge nicht aufrufen. Keine Ahnung, ob das vielleicht ein Indiz für den Fehler sein könnte.

Hat jemand eine Idee? Oder noch Fragen?

Herzlichen Dank.

Good day

Sometimes the I accidently moved a folder to somewhere and I don't know where it was moved into and I can't find it, or don't know what folder was moved.

Can you please make an Undo folder setting, so that whenever it was moved, it can undo back.

A few days ago, after several years happy use of Thunderbird, it has stopped downloading my emails to my computer where I have stored them for several years - off line I have no idea how to address the issue as nothing has changed at my end. I am thinking the only solution may be to backup all the data uninstall and reinstall thunderbird - if so what is the safest way to do that please?

Telstra are changing me to fibre to my home (currently copper to home). In the process they have removed Thunderbird and introduced Telstra web mail which I do not want. But, I do not know have to re-install Thunderbird on my desktop. I need some help as my knowledge is more in keeping with 1940's to 1970's technology. Hope you can help Bob

In the past month or two I have been dealing with a constantly recurring issue with Thunderbird getting my emails. Login to server pop.windstream.net with username ----- failed, and then it gives me the option to retry, enter new password, or cancel. 99% of the time, when I hit retry, my email downloads just fine. But I have multiple email accounts that I have to go through the same song and dance on every time I try to download my messages. Sometimes one or more of my email addresses will check and download ok... sometimes all of them will... sometimes none of them will. But choosing the retry option usually yields me good results so it doesn't appear that I have something in my settings that is wrong?? And usually if I shut down of Thunderbird and a restart of it, all email addresses will down;load perfectly the first time I try.

I wonder if it doesn't correlate with a Thunderbird update? I keep hoping that the issue will be resolved as quickly as it came through another update or something but it's been long enough to really start driving me crazy now so can you help me? What is going on with the normally smoothe and agreeable Thunderbird on my very same computer using the very same email addresses all of a sudden?

Thunderbird 128.5.2esr (32-bit) Odd problem in that just one folder was being identified as not being able to be compacted because of Disk Space....not true, plenty of space as I keep it regularly cleaned. I can clear the issue by making another folder of a different name, copying all messages to that folder then running COMPACT on the new folder and nothing is amiss. Run it on the original problem folder and no issues. Delete the original folder and create another with the same old name and transfer the messages to the now new originally named folder. Delete the TEMP folder. Then run a COMPACT on the problem folder and no issues.

Then run compact on the whole message tree and sure enough the COMPACT issue has now moved to a different folder. I suspect you could chase this thing till the cows come home but won't resolve, just moves it from folder to folder.

Now I could just kill Thunderbird and reinstall but this is intriging. Not sure if that would help. Ran TROUBLESHOOT MODE clean with out the only extension I use and no change. Stumped.

Thanks!

OS is Kubuntu 24. TB version is 139. Password was working on the ESR version, but once I upgraded to 139, my password no longer works. I tried going back to the ESR version, but now the password doesn't work on ESR as well. Help ! Email is phlag311@att.net

I get lots of emails & like to reread some of them. I archive really important ones but nothing stays in my inbox more than a day or two, then they disappear. What's happening? I've changed no settings

Mozilla's documentation on IMAP Synchronization Mozilla's documentation on IMAP Synchronization indicates

"Non-synchronized messages are still accessible within Thunderbird. The only difference is that rather than downloading the entire message, only the message "headers" are downloaded. (Message headers contain information like the sender, recipient(s), subject, etc - everything except the body of the message.) The message body is not downloaded until you click on the message in the message list"

Under what settings (e.g. Sync messages checked or unchecked) does this behavior apply?

Thanks.

I copied my profile from old computer, put TB on new computer, copied the profile to overwrite the profile on new computer- all seemed fine but no names, no email copies, no data. I followed the instructions, no what?

I have had an ongoing problem with Thunderbird being unable to log into the various mail servers that I use. I've tried repeatedly to solve this problem and have been able to cure it in the past by clearing the cache, but it recurs over and over again. I cannot keep wasting my time like this. I'm an independent contractor and I need to be able to use my e-mail client consistently. I've got work to do! This morning, it's suddenly decided that it cannot log into any of the three services that I use.

Is there a lasting solution to this problem? If not, please tell me and I'll move on peacefully, but please don't keep me chasing my tail for something that cannot be fixed.

Hi there, I'm experiencing an issue with the Microsoft Teams add-on in Thunderbird, specifically when using it with multiple Microsoft Exchange accounts.

Issue Description:

Previously, I was able to select between accounts using the Teams icon in the toolbar without any problems. However, after switching operating systems, the behavior has changed:

• When I hover over the Teams icon in the toolbar, the account selection menu appears as expected.
• As soon as I move the mouse to select an account from the menu, the menu disappears immediately before I can click anything.
• I've made sure that the mouse doesn't leave the icon or jump erratically, but the menu still vanishes every time.

This only started happening after I changed my OS. On my previous setup, the add-on worked fine.

Fixes Attempted:

• Removed and re-added the Exchange Accounts
• Reinstalled the Owl for Exchange add-on
• Fully uninstalled and reinstalled Thunderbird, including manually deleting the profile data folder
• Disabled hardware acceleration

So far, nothing has resolved the issue, and I haven’t found any other reports of this specific behavior online.

The attached image shows the account selection menu when hovering over the teams add-on, but as soon as the mouse moves over to the menu it disappears.

System and Application Details:

• Thunderbird Version: 139.0.1 (64-bit)
• Operating System: Kubuntu 25.04
• Desktop Environment: KDE Plasma 6.3.4
• Display Manager: X11
• Kernel Version: 6.14.0-15-generic (64-bit)

Any suggestions or workarounds would be greatly appreciated.

Some years ago I found it very useful to create group address books within my overall Address Book. However, when I created a new one last week, after first entering two new-to-me contacts into it, I could not find any way to copy other contacts from my general list into the new group. IOW, in order to add OldFriend1. OldFriend2, etc to NewGroup, it seemed that while inside NewGroup I would have to type each of them in, one by one, as if brand new. Right-clicking on OldFriend brought up a menu that offered Edit and Delete, but *not* Copy, let alone "Add to Group." Can it really be true that there's no easy way to simply *add* OldFriend1, etc, to NewGroup without having to create duplicate entries? Thank you!

(Using 115.11.0, 64-bit edition, in the Windows 10 Pro environment.)

I used ImportExportTools NG to export messages from one profile and import to another.

I tried to export only selected messages from my one of my local folders (it seemed an option, but IET NG is not intuitive).

Whatever, the import process has created a sub-folder in the local folder of the same name, and there is a huge redundancy (duplication) resulting.

My question: how can I merge the sub-folder into the parent, when dragging and dropping is not allowed?

i know that thunderbird for android works differently than desktop version, that's ok. i ask here to add to thunderbird-android function of backup emails to mbox-file, collect emails from selected server and make backup in mbox file which can than be opened in thunderbird-desktop. i must emphasize, i don't ask that thunderbird-android should be capable of handling mbox-files, this would be pure backup functionality.