Thunderbird Community Forum

This is what I get when I click on email link. I can't delete it. This has to be solved before I can get to my second problem https://webmail.spectrum.net/mail? context_token=eyJza3NpZCI6ImNvbnRleHRfdG9rZW5fc2lnbl9rZXlzZXQiLCJza2lkIjoiNmJkYzZiMTEtZjBiZS00ZGFlLTliOWUtY2RkMGMyNWE5ZmUyXzIwMjAtMDEtMjRUMDcuNDIuNDQuMzQwWiIsInNlY3BvbCI6ImNvbnRleHRfdG9rZW4iLCJraWQiOiI2YmRjNmIxMS1mMGJlLTRkYWUtOWI5ZS1jZGQwYzI1YTlmZTJfMjAyMC0wMS0yNFQwNy40Mi40NC4zNDBaIiwia2V5VHlwZSI6IlJTQSIsImFsZyI6IlJTMjU2IiwianRpIjoiYWU2MzMwZDYtNTBlZi00Mjk3LThlOTMtZDUxOWVjZmMxMjdkIn0.eyJzdWIiOiI5RTJGNzAxQi02N0IyLTRBQkYtODA3Ni00RkUzRUIxMzdBRkQiLCJkZXZpY2VfaWQiOiI2NTUzMDYyOS01YWJmLTQ0MWQtYTE1OS04Njc3ZDc0ZTU1NzUiLCJzZWNwb2wiOiJjb250ZXh0X3Rva2VuIiwiaXNzIjoiY29udGV4dF90b2tlbi1pc3N1ZXIiLCJpZGVudGl0eV9ndWlkIjoiOUUyRjcwMUItNjdCMi00QUJGLTgwNzYtNEZFM0VCMTM3QUZEIiwicHJlZmVycmVkX3VzZXJuYW1lIjoiampmbHlubjUwQHR3Yy5jb20iLCJub25jZSI6IjE0NjY2MTM2NzYzODIwMzY5Mzk2NDMwMzI1ODQzMiIsImNsaWVudF9pZCI6ImNvbnN1bWVyX3BvcnRhbCIsImF1ZCI6ImNvbnRleHRfdG9rZW4tYXVkaWVuY2UiLCJhdXRoX21ldGhvZCI6IlBhc3N3b3JkIiwibmJmIjoxNzY5ODc5NzgwLCJhdXRobl9zb3VyY2VfcG9ydCI6IjU5ODc1IiwiZ3JhbnRfdHlwZSI6ImF1dGhfY29kZSIsImRsYV9wZWVyX2p0aSI6ImFjNTZmMGEzLTg0OGMtNDNhOS1hOTUyLWNlNzllNDM4YmI5MiIsInRydXN0ZWRfY2xpZW50IjpmYWxzZSwiYXV0aF90aW1lIjoiMTc2OTg3OTc4MCIsImF1dGhuX3RyYWZmaWNfb3JpZ2luX2lkIjoiNjguMTcyLjE2OC4yNyIsImRsYV9wZWVyX2V4cCI6IjE3Njk5NjYxODAiLCJleHAiOjE3Njk5NjYyNDAsImlhdCI6MTc2OTg3OTc4MCwianRpIjoiYWU2MzMwZDYtNTBlZi00Mjk3LThlOTMtZDUxOWVjZmMxMjdkIiwiYXBpX2d3X2RldmljZV9pZCI6IjY1NTMwNjI5LTVhYmYtNDQxZC1hMTU5LTg2NzdkNzRlNTU3NSIsImlzQ29udGV4dFRva2VuVFRMT3ZlcnJpZGUiOnRydWV9.SkxhnFtRLxHTpXXn5_kDX8nBISuPu3wdpoNFwTKLtmUadL29D40rNMHlmEOOa2LbGFVi8qlEWnscUMV8WXGLF02RFhSsEMFtBbXGpB9XUy6q_YW5FRJo1su5AJxboh1LMastJ39rdqnooQsnvA5_Mmy4NDBZrb1bQCmzXn3wiLsiBDMxorQ8Kk45CEWL6Bz09Z8EltuEQ2yVN3FGTGqAeU2i5-qNv12kzgimIu4TbDyE2DIi6_AKenLGc1kXlcZ8oxGjUEbJm1AThmpNbGF9WJ7d55_JQyfGWvEMIYNOtAiPaNNRCF1AlcBP3TAH34L1uI49Ve6C0SvidbRu2jYDuQ&referrerAppVisitId=202601311716P-753ab3c2-c22c-44cd-865d-2b77307fabfa&referrerAppName=SpecNet&referrerAppType=Web

I have Mozilla Thunderbird and I find that some emails particularly with attachments (but not always) disappear from my inbox after a few months and I can't find them by doing a search under the sender's name or in my inbox.

As an example my most important emails come from 2 sources. One is an accountancy practice and the other a property management company. Those from the accountancy practice are nearly always missing after a few months but those from the management company rarely are.

If I carry out a search on the accountancy practice name, nearly all of the emails in the list are ones that I have sent and the only way I can find a particular email is to look at the trail before my email, but by doing so there are no attachments with their email. If I then look at the date of their email in the trail and then search for the date in my inbox, the email isn't there.

Added/Created this folder " " 0 _2026 - BANKS - 5 CARS [ 2 NEW/3USED ] "

Now the folder looks like this

         0 _2026 - BANKS - 5 CARS  [ 2 NEWe96f7068

I have a dozen other folders that appear like this with the letters/numbers at the end. When I delete them they reappear next time I open Thunderbird.

Are these folders corrupt? 
How do I eliminate them ?  
How do I stop folders from reappearing?

Thanks,Mike

Hi,

I have a relatively fresh install of Thunderbird and am unable to save email addresses to my address books. When I click "Add to Address Book," I'm receiving the following error message:

NS_ERROR_FAILURE: No directory for uri=jsaddrbook://abook.sqlite Uncaught NS_ERROR_FAILURE: No directory for uri=jsaddrbook://abook.sqlite

   getDirectory resource:///modules/AddrBookManager.sys.mjs:291
   addToAddressBook chrome://messenger/content/header-fields.js:583
   addContact chrome://messenger/content/msgHdrView.js:3163
   oncommand about:message:1

AddrBookManager.sys.mjs:291:22

It seems that some file is missing, so I am wondering how to resolve this issue.

Thanks, Andrew

'Hey Ed .. need your advice again'

Open your TB profile:

- TB menu > Help > Troubleshooting Information

- click the Application Basics > Profile Folder 'Open Folder' button

- close TB and rename the folderCache.json file to folderCache.jsox

Restart TB and the list should be gone. Note this will also remove the list from the R. click > Copy To list.

======================================================

These are the 3 files in the profile folder. I'm confused ..which file do I rename? TB is closed This file folderCache.jsox .json - create date 01/13/2026 was created when I used above procedure on 1/13/2026...

I already have a folderCache.jsox file ... renaming it leads to file being unusable. '

folderCache.jsox - create date 12/21/2025

folderCache.jsox .json - create date 01/13/2026

folderCache.json - create date 02/02/2026

Thanks,Mike

I am running Windows 11 Pro and Thunderbird version 115.8.0. When I went into my emails this morning I tried to delete 1 junk email and my entire inbox all my emails disappeared. How do I get them back?????

Thunderbird 147.0.1 (aarch64, macos, m2)

Team, After spending many many hours creating 14 search-folders that can find all of the right emails in approx. 20 "real" (local) folders.

Then I renamed 10 local folders and noticed my searchfolders disappearing!?

Big panic. Now, only the last 2 created searchfolders where there. The rest was gone. Realizing that the searchfolder config is in a file called "VirtualFolders.dat" I instantly took a copy. Restart Thunderbird: Now only 1 searchfolder was left. The copied virtualfolders.dat file still had 2 searchfolders in it but the rest is gone. There is no other copy/backup of this file.

These search folders are the only thing that generated some sense in gigantic piles of email.

Does renaming local folders KILL Virtual/Search folders?

Greetings.

For many years I have used Thunderbird to send and receive mail through my Outlook account (while happily donating to Mozilla).

A few months ago, every initial attempt to send a message abruptly started to fail, generating the dreaded notice that “the message could not be sent because the connection to Outgoing server (SMTP) smtp-mail.outlook.com timed out.”

What is odd is that if I keep trying to send, the message always goes out eventually -- sometimes after only two tries, sometimes after ten tries.

Thus, my Outlook account works, my Thunderbird settings work, the SMTP server works -- but only at random intervals.

The problem has continued through several Thunderbird updates, including the current one (147.0.1). I tried changing the server to smtp.office365.com and got the same performance.

I am on MacOS 15.4 and am not running any third-party antivirus or firewall product.

My thanks to anyone who has insight into this problem.

I have Thunderbird 142-esr on a Windows 11 computer with two users in separate Windows users account. The second user (my wife) suddenly had her gmail login stop working on TB, even though it continued working on all other devices. The symptom was that the inbox would hang trying to log on to gmail, although no error messages appeared.

My account worked normally throughout this time.

After trying less destructive fixes such as closing the application, logging off, and restarting Windows, I guessed there was an issue with her account, possibly a corrupted file. So I deleted her gmail account. When I tried to create a new account, TB accepted her credentials and the Google login came up. I successfully authenticated to Google, but installation failed when I returned to the TB new account screen. After a long wait, TB issued an error message saying the password or user name was bad.

I did two tests to isolate the problem. First, I attempted to install my wife's gmail account in my Windows TB instance. That failed in the same way. Second, I attempted to install my gmail account on her Windows instance. That worked. I concluded there was nothing wrong with her instance of TB. I thought it might be an issue with her password, although Google has never asked her to change it, and there haven't been issues logging on outside of TB. Her password did not meet Google's current requirements, so I changed it to 12 characters, mixture of upper/lower case, numerals, and special characters. That worked.

Unfortunately, during the process, I lost her settings, and it took a while to recover them from backup media.

I'm posting this more to ask if others have experienced such a problem than as a request for help, as I think the underlying issue is now resolved. Because it may be some kind of malignant interaction between TB and gmail, I thought it might be worth reporting as well.

I have recently installed 140.7.1esr (64-bit) on Windows 11

1. It keeps asking for my account password, I always check the box for saving to the password manager, with no effect, I still have to type it in every single time. (I did set up pwd manager and I do have a master pwd)

2. Initially I had Thunderbird pick up my Gmail account as well, but it stopped picking up my Gmail for some reason. So I completely deleted my Gmail account in Thunderbird. yet it persistently asks for access to Gmail every 15 minutes. (I get a notification from Gmail saying that Tbird is asking for access to Gmail). The Gmail account no longer exists in Tbird, does not show up in the menu, and it does not download anything from Gmail if I give it permissions.

I am working on an article explaining aspects of message verification such as SPF, DKIM, DMARC and ARC. I have been studying how messages are marked as spam. I have observed that some messages that would be purely legit (like from my bank) are occasionally marked spam. Others show inconsistency -- such as my articles from Substack being marked as spam for some addresses I own, while others are not.

I am particularly interested in how Thunderbird is interpreting the header in regards to source verification. In most of my articles I have advocated for a scoring system that would better inform the recipient of the trustworthiness of the message. I noticed there is an X-spam tag on some messages that is based on a scoring algorithm.

Appreciate your assistance.

Eric

Hey, i have a question

i recently installed my computer new, now i pulled over my Thunderbird profile folder, i have 2 email accounts and like 30 feeds, now when i click on a feed it shows

"feedname - 623 messages"

NO MESSAGES

aka its empty, when i restart its fixed, and i never get a blue update mark aka he does pull new messages but does not inform me

any way to fix this? Thanks :)

Hallo, kürzlich habe ich einen neuen PC (Windows 11 - Androit) in Betrieb genommen. Seitdem gibt es immer wieder Schwierigkeiten beim Versenden meiner E-Mails. Ich werde ständig aufs Neue aufgefordert den Benutzernamen und das Passwort einzugeben. Wenn ich das tue, und das Gewünschte eingebe und absende, erscheint kurz danach die gleiche Aufforderung, das Gleiche könnte ich endlos wiederholen. Mein E-Mail wird dann aber trotzdem versandt. Was mache ich falsch und wie kann ich das ändern. Vielen Dank für Hilfe MfG Horst Kniepmeier

Using the Spell checker in long test the cursor gets behind the popup window of the Spell checker. I know this was _no_ problem in further vcersions. Please change it! So I have to close the window to find the caursor and restart the Spell checker

Neither plain-text nor HTML-signatures are being removed in replies, even though they are at the bottom of the email i'm replying to, prepended by the default -- tag on a dedicated line, as is the standard. I double checked that mail.strip_sig_on_reply is set to true. This happens on two separate accounts configured on my client. Thunderbird Version 140.6.0esr on Tuxedo OS (equivalent to Ubuntu 24.04)