Thunderbird Community Forum

I am using TB 140.9.0esr (64-bit) on Kubuntu 25.10 but this has been true for some years. Mostly when a start a new Email address whether in the To:, cc: or bcc: fields TB does a very good guess after a few letters about the address I want. However, every so often, perhaps 5% of the time it will pick the correct person but I won't notice that it has picked an old address for that person. It seems to happen in bursts, so three times in the last few hours for two different addressees. I realise that I could shift the old addresses for people to the notes section of the address book but I would rather not as I am hoping that one day TB will have the ability to search for all Emails to/from someone across all the addresses they ever had, current or deceased. Is there a way you can stop TB suddenly changing its guesses about the addresses for a person? Or could you add a way to tell TB in the address book that addresses are dead and should never be offered as addresses to send to?

TIA,

Chris

I run TBD 140.8.0 esr (64 bit) under Debian 12 Linux. Until recently I could automatically enter a special address from the pertaining addressbook, this does not work anymore. helpfiles do not show a solution thus I am here.

The addressbook is full of addresses however I have to transfer a special address via past and copy into the addressfield of the mail I want to send.

Thanks for a quick answer Jörg Kampmann

Bonjour, depuis des années ,je consulte ma boite mail : [edited]@free ,en clickant sur le symbole thunderbird dans ma barre de commande ! ces derniers jours je n'ai plus d'accés , en clickant je n'ai plus de réponse! Suite a cela j'ai redemandais à réinstaller Thunderbird dans mon ordi ,mais je n'y arrive pas ???

I am running Linux Mint and Thunderbird 140.9.0esr (64-bit). When I try to setup my Comcast email account I get errors and the program basically stops. For example "can't access property "cleanup", this [#configVerifier] is undefined". When I allow Thunderbird to do the initial search and follow its recommendation I get this error: Error creating account Incoming server already exists

I have Tbird running on two other computers THAT HAVE BEEN TURNED OFF. I noted that if I tried setting up Tbird on my newest Mint installation, i.e., Tbird running on my Windows machine, it would also fail to make the account.

I am at a loss as to what is going on. Any ideas???

I am having an issue sending emails from one of my email accounts. I keep getting an error when logging in.

The account email address is xxx.ca@hotmail.com. Is the .ca causing the issue? I can't seem to change the name in Outlook Exchange.

I am running Fedora 42 KDE spin ("plasma"). The "Discover Software Center" app offers Thunderbird as both a regular and a flatpak install, and I somewhat arbitrarily chose flatpak.

I am dealing with several legacy email accounts that have 20 years of messages, so I need to control where the profile was created, so immediately after installing I ran with -P to create a profile and specified a path name of /lore/jeff/thunderbird. /lore is the mountpoint of /dev/sda2 and it is in my /etc/fstab. /lore/jeff previously existed because that's where I put my Dropbox folder.

Every time I shut down TB and restart it later it always fails because lock and .parentlock are never deleted. Until now, I just dealt with it by deleting the files in bash, but today I wanted to make sure that TB always starts offline and decided that user.js would be the absolute safest way to guarantee that, so I pulled up profiles.ini to get a list of all profile paths to make sure that I put a copy of user.js in each and every one whether it's in use or not. What I discovered is that the profile I created does NOT have a Path of /lore/jeff/thunderbird but instead /run/user/1000/doc/e1a4ab74/thunderbird and not only that but at the very bottom of the file are these three lines [InstallBD520B11F73A6B64] Default=/run/user/1000/doc/e1a4ab74/thunderbird Locked=1

The interesting thing is that when I put user.js into the /run/user... path and then looked at /lore/jeff/thunderbird to check on lock and .parentlock, I see that there is magically a copy of user.js there. I'm not exactly sure what is going on because when I do `ls -ldi` on the two files, their inode numbers are vastly different. I don't know enough about how flatpak operates internally, but my gut tells me it has something to do with it, and my question that I'm finally getting around to asking is if I edit the profiles.ini file to use /lore/jeff/thunderbird in an attempt to get TB to correctly clean up the lock files, is that going to cause a problem because of whatever flatpak is doing? And should I complain to flatpak about it?

Thanks for reading :-)

had the need to start a fresh thunderbird profile.

now I forget which setting(s) allow for thunderbird to scan the local folders, NOT the internet, for new mail.

any suggestions?

thank you

need help connecting to yahoo.com from my xfinity Comcast.net environment

I'm on Thunderbird version 140.9.0esr at present.

Machine: Dell Inspiron 15 Series laptop

Monitor: Viewsonic 27"

System: Ubuntu 24.04.4 LTS

RAM: 16 GB

For the last 2 versions of Thunderbird, I have seen that even after reading the new messages, the green new messages indicator remains on the TB icon in the taskbar.

Refer to screenshot.

It should of course disappear as soon as the new messages are all opened. Otherwise one thinks that there is an unread message somewhere among the mail folders, even though on checking there is not.

This remains so until TB is closed and re-opened. After re-opening the green circled number is gone.

Of course, this is more a nuisance than a serious problem.

But it would be nice to have it sorted by the next version.

Tried to setup gmail account manually. Couldn't verify username and/or password. Thunderbird just opened a window with an URL in plain text and did nothing. Text of window below. https://accounts.google.com/o/oauth2/auth?response_type=code&client_id=406964657835-aq8lmia8j95dhl1a2bvharmfk3t1hgqj.apps.googleusercontent.com&redirect_uri=http%3A%2F%2Flocalhost&scope=https%3A%2F%2Fmail.google.com%2F+https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fcarddav+https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fcalendar&login_hint=daryl_brenton%40wycliffe.org.au

Hello,

I am using Thunderbird on my arm64 Linux machines (Raspberry Pi 4 and 5 and my Odroid C2) and I want Thunderbird to send the correct platform information in the User-Agent line. After enabling Thunderbird to sent the full User-Agent line the following information is currently sent:

User agent:Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0 Thunderbird/140.9.0

Everything is correct except for 'x86_64'. I would like to have sent the actual 'arm64' information because I'm proud using my small ARM64 machines as workstations and as a replacement for classic PCs and I do want to have this information distributed with every mail I am sending with Thunderbird.

Is there an easy way to get the correct information about my arm64 machines into the User agent line?

I am happy for any advice and help.

Kind regards,

     Roland

i today installed linux mint and managed to get everything setup exect for 1 email account

i keep getting a message something like account authorised but cant connect but the other accounts that i setup are working fine

if anyone can help that would be great

I have been trying to add my Outlook account for about 30 minutes now. Normally, I would use the beloved legacy account creator, but that doesn't exist anymore.

But no matter what I do, I can't log in to my account. And I am pretty damn sure I got my login correct since I managed to log in to the website and all other devices with it.

And the error message is also seriously amiguous. I just need someone to help me through this..

Thunderbird Filelink uses end-to-end encryption and files are only encrypted/decrypted locally but unless the code running on your system is reviewed and validated you don't really know what it does. I would think that every time recipients click on the link and use the web interface to download a file, their browser is sent a script that does the decoding. Similarly, if you use the web interface of a Send instance to send a file, your browser is sent a script for encoding.

If the above is correct, how do we know these scripts are always the open source scripts that have been independently validated? Isn't it conceivable that a Send instance may send you a customized script for encryption/decryption that compromises encryption? This could be done with selected targets to avoid attracting attention too.

Hallo, die Kontakte im Adressbuch werden mit Carddav zu meinem Mailaccount (IONOS) nur teilweise syncronisiert. Die Syncronisation endet bei 1000 Einträgen, ist das so gewollt oder kann ich dies ändern? Fehlermeldungen gibt es dazu keine. Die betrifft die Thunderbird un Linux Ubuntu. Ich Thunderbird Windows 11 funktioniert alles.

Liebe Grüße Peter

Desde 1859848330754551059@xxx Mon Mar 16 19:33:05 +0000 2026 X-GM-THRID: 1859848330754551059 Etiquetas de X-Gmail: Basura, actualizaciones de categoría, sin leer Entregado-A: kelsmendenhall@gmail.com Recibido: por 2002:a05:6a21:4684:b0:392:e611:3b79 con SMTP id vy4csp1764692pzb; Lun, 16 Mar 2026 12:33:05 -0700 (PDT) X-Recibido: por 2002:a05:6a21:7701:b0:398:951c:b5e con SMTP id adf61e73a8af0-398ecd1f963mr13387231637.46.1773689585558; Lun, 16 Mar 2026 12:33:05 -0700 (PDT) Sello ARC: i=1; a=rsa-sha256; t=1773689585; cv=ninguno; d=google.com; s=arc-20240605; b=J2jxwFrFk2cfRrK3HDYybReCEAKsDF1ad7yY+0PUOIEte59vgLNXTdIUDDyaZ4vwZ LMhnQCP70N5iLMGidX6VTHWsUVXiuP26bsgiLclW1FO6npQWqy6hQLVB/7gvsGHdprj MXJGyXOrklbObC2bvCwRhrUkUlpVgLX+Nrfx+Hdj1dBquUwyshHHBGeWxxYJKrMyzudq T60Vqgt8ncm1UnKY78juNqorjBm+xwzmR/nRaxbelIJEGB/OOOnoUoCidGlxeBW76ixHd bpzCFIeBXdp0dHAA6KHm64L4EtzxoE8LIaIY2uf1C2Qnflv/bs/vmdwVy1HKCFCLYYw6 dZbA = = ARC-Mensaje-Signatura: i=1; a=rsa-sha256; c=relajado/relajado; d=google.com; s=arc-20240605; h=feedback-id:mime-version:subject:message-id:to:from:date

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bh=ESN0MrBESopR+DeRap9g+5QldD+9B9+bNgpsQNgcFA=; fh=pHP9Vhik1W39SJRqJCuit6UQkLZKYCjjnM30/3klHXg=; b=Ps3a/sAz0Wkyaqr3wSRdNVA8oGF635MneT6UfDJ1hvKq0ubFqgYQ4x+DlMf8hKloD ldcWIiPg9VhTVbi3Kve9DjKg8q0Ak8gGJBxtLQGH3lAs9OXxP8Ar3pqxKOfeLudpomPR Xl1xoJZyIuHjB8EpESZgApIDuFN3iDVwoX/ljbmMpV7cbQPKlI+VPYOcDPbVfuhx+hBE jgcKud1xpbDkxa8uwdhoWsEhSQ7rocNoIMT5l/IEbwfotbcEV7mPFquN+cs6db3TRgLJ vUoNyCgSFp+reMl4M211Wp/KCcaTXVyDSBm2odtdIeuJTROM70nxNI3X4wZHzdn5XoBP NtiA==; dara=google.com ARC-Authentication-Resultados: i=1; mx.google.com; dkim=pass header.i=@square.com header.s=wn736irm2fmqbvfbvsytrvmdhwbxzys3 header.b="e/wSIGXj"; dkim=pass header.i=@amazonses.com header.s=hsbnp7p3ensaochzwyq5wwmceodymuwv header.b=zBcnOeIP; spf=pass (google.com: dominio de 0101019cf8233e01-069ca972-8e69-40f3-8487-6b90a62ca9ca-000000@amazonses.square.com designa 54.240.84.130 como remitente permitido) smtp.mailfrom=0101019cf8233e01-069ca972-8e69-40f3-8487-6b90a62ca9ca-000000@amazonses.square.com; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=square.com Return-Path: <0101019cf8233e01-069ca972-8e69-40f3-8487-6b90a62ca9ca-000000@amazonses.square.com> Recibido: de a84-130.smtp-out.us-west-2.amazonses.com (a84-130.smtp-out.us-west-2.amazonses.com. [54.240.84.130]) por mx.google.com con ESMTPS id 41be03b00d2f7-c73ebbb8761si16506453a12.154.2026.03.16.12.33.05 para <kelsmendenhall@gmail.com> (versión=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Lun, 16 Mar 2026 12:33:05 -0700 (PDT) Recibido-SPF: pase (google.com: dominio de 0101019cf8233e01-069ca972-8e69-40f3-8487-6b90a62ca9ca-000000@amazonses.square.com designa 54.240.84.130 como remitente permitido) client-ip=54.240.84.130; Autenticación-Resultados: mx.google.com; dkim=pass header.i=@square.com header.s=wn736irm2fmqbvfbvsytrvmdhwbxzys3 header.b="e/wSIGXj"; dkim=pass header.i=@amazonses.com header.s=hsbnp7p3ensaochzwyq5wwmceodymuwv header.b=zBcnOeIP; spf=pass (google.com: dominio de 0101019cf8233e01-069ca972-8e69-40f3-8487-6b90a62ca9ca-000000@amazonses.square.com designa 54.240.84.130 como remitente permitido) smtp.mailfrom=0101019cf8233e01-069ca972-8e69-40f3-8487-6b90a62ca9ca-000000@amazonses.square.com; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=square.com DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relajado/simple; s=wn736irm2fmqbvbvsytrvmdhwbxzys3; d=square.com; t=1773689585; h=Fecha:De:To:Message-ID:Subject:MIME-Version:Content-Type; bh=NCNMl+YPWuK8LIinfi3LyreLJHygcGZUBs2T81uDPX4=; b=e/wSIGXjtpAmqfRUL/6LeAX2/sr+t42KFYnhyA6itnJpBq+Qb8zyJ5oflihjCxA5 vHJcaIHKAeY7nEOMv4dYH9/g2APvMGRYWkK/1MkIA6btaECMtyQ4Ozv+ezrn09X9rJK 2RvIpBbCmFj4XJ5V7M+ROXxo1dQuSAcEJZaVPDjU= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relajado/simple; s=hsbnp7p3ensaochzwyq5wwmceodymuwv; d=amazonses.com; t=1773689585; h=Fecha:De:To:Message-ID:Subject:MIME-Version:Content-Type:Feedback-ID; bh=NCNMl+YPWuK8LIinfi3LyreLJHygcGZUBs2T81uDPX4=; b=zBcnOeIP3qkcAKO5k2ASb7aQf05slx6wMbAcIO6L4TEbW6lqbIXRZikHswOZ9U0l qCLb99nGElnmO89RDc+sfP7c3rx3c6a/Rkgg4Pk1eoFolRLp8UNPgP3Fg4HMK6zMql q82TwrVgtbLRv+fCmwH2RT/bNDfaom6LyfOGCUZY= Fecha: Lun, 16 Mar 2026 19:33:05 +0000 Desde: Cash App <cash@square.com> A: kelsmendenhall@gmail.com Mensaje-ID: <0101019cf8233e01-069ca972-8e69-40f3-8487-6b90a62ca9ca-000000@us-west-2.amazonses.com> Asunto: Gastaste $19.99 en Disney+ MIME-Versión: 1.0 Tipo de contenido: multiparte/alternativa; límite ="-_Part_275333_2130499115.1773689585148" X-Square-Cash-Template: transacción Autorizada X-EMS-Request-ID: 3ac262c6-19f2-4755-b86c-d752f2d1a315 X-ERS-Token: CAIQ7Z25gImS8e+oARj7h73wr6tyZsB Feedback-ID:::1.us-west-2.EF4Hd+uKJPJhWmZlVnJKCXQDkGNGjBpr4Wm4bmSPmbI=:AmazonSES X-SES-Outgoing: 2026.03.16-54.240.84.130

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