Thunderbird Community Forum

After I upgraded my system to Kubuntu 24.04 thunderbird started eating CPU (150+% CPU usage according to htop). Because I couldn't tell if the culprit was the new KDE or the old profile, I tried to create a new profile, blow away the KDE config, etc. I also tried downloading the latest version of thunderbird from the website. Nothing helped.

I was able to replicate this problem using the in-memory, fresh KDE.

To replicate: Create Kubuntu 24.04 install USB. Boot from this USB. When asked to install or try, select "Try Kubuntu".

Start Thunderbird.

When prompted to create an account, select cancel. Go into settings, to the bottom, and select Maildir for file storage. Quit thunderbird, and start it again. Create account (select configure manually, enter the information for imap and smtp host, STARTTLS, detect authentication. My username does not contain an @, if that makes a difference). Select "Re-test"

Try to read mail. You will quickly notice that Thunderbird is consuming > 100% CPU, and UI is non-responsive.

Restarting thunderbird does not help.

netstat -tupane shows one or two connections to my imap server port 143, but wireshark doesn't show any traffic on port 143

Not that I think it matters (since I can't get Thunderbird to start seriously downloading from the server) but I have a big ( >100G) Maildir behind my courier server.

Note that I see this problem both with the version on Kubuntu 24.04 install USB, and the latest version downloaded from the thunderbird website.

recently installed thunderbird / Mozilla on new computer but cannot send emails and get message as seen below. old computer still can send emails OK

Regards John

Dear all,

While writing a new message with TB 128.5.0esr (64 bits), under windows11, the action "Insert Web link" make the TB windows freezing, and there is no way to close it out of killing TB process in the task manager.

The only way for now to send an email containing an hyperlink is to start TB in Safe Mode .

Is somenone has an idea for that issue as the functionnalitie was well working in previous TB versions .?

Regards, Stephane

I have an issue where, from one day to the next, one of my employees lost the "open thread in a new tab" option. This option was available when right-clicking on a message and then selecting "open/open thread in a new tab." The option no longer works in the "inbox" folder, but it does still work in individual subfolders.

Hi, I have started to use Thunderbird Mobile (Android) and it looks great. One thing I miss (or can't find) is the print option. I have it in my other apps and it works perfectly in my other apps. I can find a share option but there is no print option in that one. Am I missing something or is it just not a print option in Thunderbird Mobile yet?

Error message when trying to send a message: Sending of the message has failed. Peer's Certificate issuer is not recognised. The configuration related to smtp.message.com must be corrected. When you click on OK, it brings up another lengthy description of licenses etc.. but no result. I'm trying to send a picture but I'm not sure how. In-any case, i'm sending this for my Wife's account: erika-b@netspace.net.au

We had a long-standing conversation with The Messenger Company, but the were unable to solve the  problem.

Regards, Peter Behrendt

Hi Support, A customer uses Thunderbird as their main mail platform but suddenly cannot send or receive messages. error message as follows: Sending message failed. The message could not be sent because the connection to the SMTP server timed out. Try again. we get this message directly when we click send (1ms)

Now we checked our Mail Server, connection is up also TLS to port 587 works fine but the client can not establish a connection... it worked a few days ago tho. We also tried to reinstall Thunderbird, new profiles and also tried debugging but we could not find the mistake.

BR, Jakob Jauk

Bonjour,

J'utilise 2 comptes de messagerie Gmail sur Thunderbird, et je dois toutes les semaines remettre les mots de passe google de ces comptes pour continuer à l'utiliser. Que dois-je faire pour supprimer ces demandes trop fréquentes.

Merci par avance, Hervé Serre

After Thunderbird just updated to Version 128.5.0esr today, now all my accounts are saying that the connection is refused. This is coming from three different email services that I have accounts on. I'm assuming it's not an issue with those servers as I can access them just fine with a different email client, and I didn't change any settings. Yesterday it worked, today it doesn't. Only thing that seems to have changed is Thunderbird got updated.

I am receiving the following error message when downloading messages from AOL to Thunderbird. "The DELE command did not succeed. Error marking a message as deleted. Mail server pop.aol.com responded: Too many requests." Please could anyone help me download my messages? I have been away for a month, I have a lot of messages to download. Could that be causing the problem?

Hallo und guten Tag,

ich habe für Windows [PC] und Android [Pixel 8pro] jeweils die beiden aktuellsten Versionen von 'Thunderbird x64'und 'Thunderbird: Free Your Inbox' installiert und eingerichtet. Es sind zwei E-Mail-Konten mit jeweils einer Alias-Adresse eingerichtet, alles unter GMX.NET , IMAP+SMTP sind ebenfalls aktiviert [IMAP port993 und SMTP port465]. Leider bekomme ich es nicht so eingerichtet, daß Mails wenn sie am PC oder am Pixel empfangen und verschoben oder gelöscht oder als Spam markiert sind, daß dieses dann auch am jeweils anderen Endgerät so erscheint. Es werden immer wieder alle Mails neu als eingegangene Nachrichten gezeigt und ich muß dann am jeweils anderen Endgerät die gleichen Aktionen vornehmen.

Wo liegt der Fehler, was muß ich tun um das Problem zu beheben.

I am supposed to be on the esr release program, but today I was automatically updated to beta release 133.0. This is the second time this happened. Thunderbird shows a red screen, and recommends I install the last stable release, 128.5.0esr, which is what I want to do. But the last time, when I tried to go back to a stable release, it then wouldn't let me do that because it says the profile may no longer be compatible. I solved it painfully using timemachine backups of older profiles.

What is the simplest, safest way to downgrade, now that I am in this situation? And why is this happening?

Thanks for your help!

Cannot receive new emails after the recent SOFTWARE UPDATE. Have been using MOZILLA seamlessly up till this latest SOFTWARE UPDATE. The mailbox shows the new design but no new messages are coming.

ERROR MESSAGE: Unable to write the email to the mailbox. Make sure the file system allows you write privileges, and you have enough disk space to copy the mailbox.

the geek squad copied all programs onto a new microsoft surface for my wife but did not ensure all software works as they don't want to access your passwords. when i go to set up thunderbird, i input the imap pw to the email server and first problem is that it doesn't remember the pw even though I ticked the box. second issue is that it is taking over an hour to open the folder inbox, then it downloaded 4 emails and went back to 'opening folder inbox'. clearly i am doing something wrong and would appreciate any help available from those wiser than i.

I feel rather obtuse asking, but how do I get my Thunderbird addressbook to sync to gmail contacts? I uninstalled Cardbook, because Thunderbird now does CardDav, I treid to create a new CardDav addressbook by opening my addressbook, selecting new addressbook, and going through the steps to give Thunderbird access to my Google account. But,

  no new address appeared in the list of addressbooks, and 
  the option to create a new addressbook is no longer avaiable/showing.

Addressbook is still not syncing. My server settings are IMAP. I still have three address books: All, Personal, and Collected.

I am flumoxed. John