Thunderbird Community Forum

Yes, I'm running unsupported Win 7

And yes, I could not find anything in the "help" system that related.

I maintain a Hotmail account and copy traffic to my local system. Upon reboot Thunderbird shows some files from 2024 and no local folders where I stored all my re-directed traffic.

I've run some system / disk checks and no obvious problems.

Any thoughts besides upgrading to current OS etc? Is there a Thunderbird backup solution to move files away from the active drive to protect them?

I read the instructions on moving my profile to a new computer. The hitch is that on my current, Windows 10 computer, I’m apparently using a 32-bit version of Thunderbird. I only discovered this when I updated it (through Help) and saw that it updated to a December, 2024, 32-bit release. The transfer instructions state that there may be a problem if I try to use a Thunderbird profile from one version to a different version. To prevent that possibility, I either have to update my Windows 10 Thunderbird to the latest, 64-bit release, or specify the 32-bit install on Windows 11. Problem is, I don’t know whether or how I can update Windows 10 computer to latest Thunderbird 64-bit version. Can I? If not, will Windows 11 run a 32-bit release? Suggestions?

I did a fresh install of win 11 25H2 a week ago and with it the latest TBIRD which I think was ~ver 151.

It wouldn't send/receive messages when click "get messages". Went back to 150.0.2 and told it not to update.

get messages worked fine.

BUT Just discovered that things I send aren't being put into SENT folder. Are they being put anywhere? Upgraded to latest 152.0 get messages still works fine but no sent messages.

Guess I'll go back further till you get this fixed. THANKS!!!!! :)

HELP! :)

This is a weird one, but as of a few days ago my email account has glitched and is sending an old auto-reply to every incoming email. I've ensured there's no auto-reply filter on my inbox at all, and have deleted all the templates, but for some reason it's still sending it to everyone.

Worse still it's now stuck in an auto-reply loop with the mailer daemon due to receiving a no-reply message, so my inbox is just filling up with endless 'Message Delivery Failure's!

I've also logged into the account via our hosting agent (123reg) and there are no auto-replies enabled there either.

Any help or advice very much appreciated!

Thanks, Kez

I imported an appointment into the calendar. I wanted to setup a reminder. The only option is "Show an alert". Is it possible to to create a reminder option other than "Show and alert"?

Hi,

we developed an add-in for MS Outlook. The add-in, connects to a mail message, and reads information from the mail - to transfer information to a special journal system.

Is it possible via API to Thunderbird, to create Add-Ins as seen from MS Outlook?

Best regards, Michael Vad

I bought Thunderbird because Gmail kept telling me I reached my 15gb limit. I thought I could transfer my emails to my local hard drive thereby freeing up my Gmail account. Now Thunderbird is saying I have reached my limit as well. Is there a limit on transferring emails to your hard drive? What am I doing wrong?

I create a new address book in Thunderbird. I add several email addresses to that book. I close Thunderbird at the end of the day. When I open Thunderbird the next day, the new address book has disappeared. Any idea what I am doing wrong, missing?

roland.multhaupt

18. Juni 2026, 07:13 GMT-6

Firebird is so slow now, that I can rarely receive the code that you send me. Have to take annother programm for that. Freezes even when trying to mark a mail or erasing it. WIN 11. The programm is working well at my wifes laptop also WIN 11. 2 month ago it worked fast and fine. Working in Troubleshooting mode does not show any spam ordner like before and it does not run better. I also downloaded the last version. No change! I would like to uninstall the programm but did not dare due to perhaps loose all my mails. Could you help me please? Thank you!

Hi folks, I'm managing a group of users, all using Thunderbird as email clients. I want to disable the users ability to ask for read receipts. I have succeeded to disable read receipt confirmation in a policies.json file, but I also want to block the users from asking for read receipts. I have scanned the different options, but nothing that seems suitable exist.

I would be grateful for help here.

Best regards,

Peter

The system was working fine. The next day, when starting Thunderbird (TB, the status line shows logging in to server but loops; no errors or messages, Thunderbird is 'locked out' spinning. I see the normal INBOX page, but logging in never completes. NO CHANGES were made to TB accounts or settings. I have re-installed TB, re-booted, but no change. I cannot check/change any of the accounts or do any further 'debugging' because TB is spinning. The server login is fine because Webmail can be used. Internet connection is fine, because browser works. 1. How can I stop TB from trying to login at start up? 2. What could/would cause this behaviour?

Any suggestions much appreciated.

When I try to add a new contact the box is 3/4 off the screen to the right. there is a opaque square where the box should be, Ive tried the alt/space/m/arrow thing but that's not working, also tried every suggestion from chatgpt, nothing working, reinstalled with No change Win10

I have created folders that I want specific emails to be put in when they arrive. But I don't know where to create these rules. Creating the folders is easy but how do I create a rule that tells Thunderbird which folder to put emails from specific people/businesses etc

Good morning, for some time now, appointments on the calendar that were scheduled before I open Thunderbird have been “forgotten” and don't appear. For example: an appointment (or memo) at 8:00 a.m.; I open Thunderbird at 9:00 a.m., and the appointment doesn't show up. Thank you.

Until recently the folder pane could be sized or hidden via the double-headed arrowed cursor. Shortly after the 151.0.1 update this stopped working. All suggested solutions have not worked. A full uninstall (Revo Uninstall) and completely new profile has not fixed the problem. Folder pane only responds to the menu setting and is only Open/close but no sizing.

I can send a message to one of my address book contacts without issue, but their replay always winds up in my spam folder. I click on "not" spam, but that does not resolve the issue. I do 'not' have an issue with any other of my address book contacts.

This has gone on for a while.

Thanks in advance for any suggestions.

I just upgraded from thunderbird 140 to 152 on Windows 11. I have master password setup.

Every times I start thunderbird, calendar keeps asking for authentication ( oauth ) , I did login successfully and was able to view and modify my events.

After a couple of startup I decided to click on the close button of the oauth authentication windows for calendar. I still able to see and modify my calendar successfully. Is it a bug or I miss something in the calendar settings  ?

Thanks

I have 3 email accounts which i unified. when log in I get prompted to enter password for all three accounts which I do, then I get prompted again to enter the password to all Password Manager to save my passwords which I do not want and therefore I uncheck it for all three; I then get prompted again for all three which I enter password, then I get imap login error on my main account which I click cancel a few times before it goes away,

I use Thunderbird portable. How do I fix this issue. it should be that one enters the password for each account once not three to four times. I do not want to use Password Manager to Save my accounts.

Also if ever I have to change password how do I do that? thank for your help.

I have the portable version, download from portable apps website.