Thunderbird Community Forum

I tried unticking enable and it did NOT work. Help! I want the stupid filter gone. I have struggled for two years with the junk filter which does not work right. I have done shift J. The filter does NOT learn. A week aog, I saw that I could uncheck enable and that was supposed to stop the filter. That also did NOT work.

Today, an email I forwarded to myself from another platform went in junk. I never wanted any junk filter. It has been nothing but trouble and now I can't even disable it.

I have been trying for days now to set up my Homail account into Thunderbird. It shows it there, but doesn't download any messages.I have tried every way I can to set it up, but, no joy. I even downloaded a programme suggested on Firefox, but that didn't work either. I also cannot find where to check the SMTP connections. I haven't had any problems with my Gmail accounts, they went straight in.

I run my BTinternet mail account via Thunderbird and would like to run my two Gmail accounts via Thunderbird too. Do I just do that by clicking on the + New Account button, please? I'd hate to lose access to my BT mail by doing that. (Switched to Thunderbird from Outlook a year ago and have never regretted it!

When I am working from home, on my home network, and using a VPN, (Windows 11) whenever I receive new messages, the app becomes completely frozen. That is, if the app is in the background and I receive an email "bing bong" notification, I can go to the app, but I can not click on anything. Nothing responds. I cannot change tabs, select a message, move the window, or even use the close box to quit the application. I must force quit via the Windows tray icon. If I open the application and it immediately checks for messages and gets new messages, also I can not interact with any on-screen window or element. I must force quit. Then, after force quitting, I reopen again, and get no new messages, the previously new messages I can click on and read. So at no time can I get messages, and continue using the app. I also had a draft email in progress, and received new messages, and then the draft message was non interactive. When I tried to quit the app, I saw a popup message about saving the draft, but also could not click on it. This problem does not happen at work on my internal network and no VPN. Our email is all POP based (yes you read that right, all POP no IMAP), FWIW.

Just after installation, and before going any further like adding the email account, ; google: Error 400 "the server cannot process the request because it is malformed. It should not be retried. That's all we know"

In einer frischen Thunderbird-Installation (getestet mit 140 ESR und 147) funktioniert der manuelle globale Abruf per Shift + F5 nicht mehr für POP3-Konten.

Konkret: – POP3-Konten sind korrekt eingerichtet – „Beim Starten auf neue Nachrichten prüfen“ aktiv – „Alle X Minuten auf neue Nachrichten prüfen“ aktiv (z. B. 2880 Minuten) – Thunderbird ist online

Erwartetes Verhalten: Shift + F5 bzw. „Alle Konten abrufen“ prüft die POP3-Konten und holt neue Nachrichten ab (wie in früheren Versionen).

Tatsächliches Verhalten: – Shift + F5 bewirkt gar nichts – Kein Abruf, keine Fehlermeldung, keine Statusanzeige – Gleiches Verhalten bei „Alle Konten abrufen“

Wichtig: Der Abruf funktioniert sofort, wenn man per Rechtsklick gezielt ein einzelnes POP3-Konto → „Nachrichten abrufen“ auswählt.

Das zeigt, dass – Server erreichbar sind – Konten korrekt konfiguriert sind – das Problem ausschließlich den globalen manuellen Abruf betrifft

Zusätzlich scheint Shift + F5 inzwischen nur noch Konten zu berücksichtigen, die für den automatischen Abruf vorgesehen sind, wobei dies selbst bei gesetzten Haken nicht zuverlässig funktioniert. Dieses Verhalten ist weder dokumentiert noch für den Benutzer nachvollziehbar.

Fazit: Der bisher etablierte Workflow „manuell alle POP3-Konten abrufen“ ist in aktuellen Thunderbird-Versionen faktisch nicht mehr nutzbar. Für langjährige POP3-Nutzer ist das eine massive Verschlechterung der Bedienbarkeit.

Ist dieses Verhalten beabsichtigt (Designentscheidung) oder handelt es sich um eine Regression? Falls beabsichtigt: Warum gibt es keinen Ersatz für den früheren selektiven/globalen Abruf?

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

Hello, I'm getting a new PC next week and I am concerned how to install Thunderbird in the new PC. And is there anything I need to do in the old PC to make the move smooth so it continues to work.

Thank you for your time and efforts ahead of time.

Today - 26/01/2026 - Thunderbird keeps crashing for no reason. I receive a dialogue box to either quit or start Thunderbird again and to add to a crash report. I have been doing this all morning - no response. I have gone onto Mozilla Google search to see if there is a problem - nothing. I have shut down and re-started the computer - nothing happens. Please can you respond and maybe give me a customer service 'live' person who can talk me through this. I have used Thunderbird for over 15 years, but this is defeating me. I am in my late 70's and cannot cope with the way your Community site works. Thank you for your help. Hope to hear from you soonest.

When synchronizing via CalDAV with T-Online, Thunderbird almost always prompts for a password, even though all data is saved. T-online says, this ist problem from thunderbird.

On January 1 my desktop version stopped downloading my GMAIL but my other non gmail are still downloading

I use Windows 10 and the version of Thunderbird is 147.0 64 bit

What can I do to fix this?

if I type a hyperlink into the Calendar description field it does not link to the url.

The mouse pointer does not change from a cursor to a pointy hand when I hover over it

I have also tried using the 'Link' button and that creates a blue/underlined url like a traditional clickable link but the result is the same as before.

Please help troubleshoot the problem, at the moment I'm having to copy and paste every link which becomes tedious when there are lots of links

Thanks

Clark

I have been trying to download Thunderbird from your website, but I keep getting the same warning message that "Thunderbird 147.0.dmg corrupt image" What is wrong?

Good day,

I have installed the latest version for win64. Every time the software is downloading emails (I use POP3 for gmail), if I am concurrently doing something else with it (e.g. selecting an email with the right mouse button to delete it, or creating an event for the calendar, or just selecting something from the menu bar), the software gets stuck. I then have to kill it and restart, sometimes it takes multiple kill and restart sequences.

I am using Thunderbird from the very beginning o fit, but this issue is pretty annoying. Any advise?

Thanks and BR M