Thunderbird Community Forum

SEARCH MODE IS NOT WORKING IN MAIN OR SUB FOLDERS. AS A TEST, I SEARCHED FOR A WORD THAT I KNEW WERE IN THOSE FOLDER[S] AND IT COULD NOT FIND. IT SHOULD NOT BE THAT HARD TO DO; THIS ISSUE HAS BEEN DOGGING ME FOR YEARS AND I JUST MOVED ON WITH NO ANSWER. PLEASE HELP.

Since yesterday (27 Apr 2026) any and all mail that comes into Thunderbird gets marked as SPAM. I searched online and found people saying that I could reset the junk training filter, so I did this, but incoming mail was still marked as spam. The next suggestion was to delete the training.dat file. Did that, restarted Thunderbird and incoming messages are still marked as spam. The last suggestion was to turn off adaptive junk mail controls. Didn't want to do that because I assumed that it would let spam through. Nope. Turned it off, restarted Thunderbird and two emails from my work came in and got flagged.

I'm running version 140.10.0esr (64-bit) on Windows 11. I am using IMAP to connect to the mail server but it's not running any spam detection software (like Spamassassin). I know this because it's my server and even if it was, no updates have been preformed since the first of this month and this just started happening yesterday. Combine this with the bug that Thunderbird notifies me of incoming mail, even if it's spam (didn't post about this because there are plenty going back a couple of years), is starting to make me look for an alternative.

I'm unable to recall which user name & email password combination I used to setup my NTLWorld email when I had to reconfigure it for Virgin/Googlemail. How can I find or reset it (so I can export to mobile)?

Thanks, Andy Hayward

Tags summary display has disappeared.

I can search for tags, but the convenient "tags folder" is gone. Please help.

Tried in safe mode with add-ons and toolbars/controls disabled. Error console is empty when assigning or removing tags.

Clearly, this is a very basic question which has undoubtedly been answered before, but I haven't been able to find it. If Thunderbird had an old-style Help feature with an index, I could probably look it right up. But coming to the forum is the only option the program gives me.

When I highlighted the password, it gave me only choices to edit or copy password and the only way I know how to delete a password is to click, "Remove All" and now the "Show Password" button is grayed out.

When I tried to delete my old password in "Show Passwords" by highlighting my old password and hitting the backspace key to delete it and every time I click on the background or hit "Enter", it just pops back on where it was so I couldn't correct it without having to click "Remove all" which turned off the "Show Passwords" in "Saved Passwords".

When I got into the "Show Passwords" in "Saved Passwords in "Privacy & Security", I had to click "Remove All" in "Show Passwords" to delete it, and now it turns off the "Show Passwords" in the "Saved Passwords" section, and now the OAuth2 is missing.

This only recently started happening. This has been tested on 3 different computers. Windows 10 Pro on all three.

With VPN on: Bluemail works fine.

Thunderbird can connect and download messages, but when I try to send a message, it gives an error.

With VPN off:

Bluemail and Thunderbird both work fine.

I have moved my Thunderbird data from drive C:\xxx\Thunderbird to N:\xxx\Thunderbird. The Thunderbird program remains on "C:\Program Files\Mozilla Thunderbird" How do I tell Thunderbird to find its data on the N: drive?

     Thank you,    Art Lieberman

Thunderbird keeps opening a Google authentication window, asking which account to use. I have two gmail accounts (both of which work just fine), and another google account that I manage a calendar for (it works fine as well). How do I work out which account is seeking authentication?

Hello,

I'm trying to create a calendar event with irregular recurrence. Not only is the starting time different, but also the duration. Since AFAIK this is not possible using the interface, I directly edited the .ics to this:

RDATE;VALUE=PERIOD:20260506T063000Z/20260506T130000Z,20260507T054500Z/20260507T110000Z

I then manually synced the calendar. The starting time is honored, the duration, however, is not. I found the entry in the .ics changed by Thunderbird to this:

RDATE:20260506T063000Z RDATE:20260507T054500Z

How can I get Thunderbird to honor the different durations?

Thanks

I'm trying to remove a couple accounts that I no longer use in Thunderbird. A window keeps popping up asking for a password, but the mail service is no longer available. When I click on the red delete button for that account, nothing happens. I've deleted all the mail in one of them which I was able to do as I thought I might need to do that first, but I still can't delete it after that. The other one won't even let me delete the emails. How do I delete these so I stop getting asked to put in a password for accounts that are no longer valid and I don't want anymore?

140.10.0esr (64-bit)

Thunderbird for Linux Mintmint-001 - 1.0

I run two browsers on Linux Mint 22.3

Librewolf and Waterfox.

I prefer Waterfox. It is set as default in its own settings

I open preferred application in system settings and choose Waterfox as preferred WEB. Thunderbird is preferred as MAIL I click on an email, waterfox promptly opens my 4 home pages....not the email I return to preferred applications and choose Librewolf instead of waterfox, click on the email again, and it promptly opens the email.

Waterfox has been set as the default browser. I am looking for a way to set Thunderbird to open emails with waterfox......I cannot find such a setting in Thunderbird.

I searched and found this : Make sure to check the settings in both Thunderbird and your operating system to ensure Waterfox is selected as the default for opening links.

Is there a way to do this in Thunderbirds settings?....It does not make sense that there would be, becasue Librewolf opens the email anyway....

Thunderbird is used on a domain network of 100 computers, all connected to a Carddav address book. About 10 computers have stopped syncing their address book. Reconnecting the address book doesn't help. Newly added email addresses don't sync. Everything is fine on the other computers, all running Windows 10.

Hey, I want to set up my .gmx.de mail account in thunderbird (140.10.0esr (64-bit), Mozilla Thunderbird Snap for Ubuntu). it used to work, on my phone and the gmx website it is working. I did not change any of my credentials but suddenly it raised the "unable to log in to ..." error on my laptop only (Ubuntu 24.04.4 LTS). After several tries I deleted the account and tried to set it up again from scratch. It finds a server profile which is consistent with the one on my phone (where it is working just fine) but login is not possible using the same password.

I have a shared family calendar and a private google account calendar that is separate. I tried importing some events from the family calendar to the private calendar. I created a .ics file, and started using the calendar import function in Thunderbird on my Ubuntu laptop. I found the file, selected it, and filtered for current and future events. I then clicked the confirm import button, and the screen changed to a view progress screen. This screen correctly shows the target account, the source file, the import type, and the number of events, so I think it's correctly set up. The progress bar shows "Importing... 0%", and there it appears to stall, consistently after several attempts. I saw another thread that talked about read-only calendars, but I don't see a setting, either at the Thunderbird level or at the calendar level that might be restrictive in that sense. Is there a preparatory step or a setting I'm overlooking?