Thunderbird Community Forum

I'm dealing with a properly updated 'bird: 140.5.0 (32-bit) running on an equally updated Windows 10 desktop. First thing this morning, out of nowhere, I started getting an "unable to write the email to the mailbox..." message when sending, thus I could send but not save. And then I realized I wasn't receiving either, on all three accounts in my Thunderbird. I stopped everything and focused on trying to fix this. It's been an all-day, losing effort. So far.

I tried the various quick checks and fixes recommended here and there: I'm running the program as an administrator. I restarted the program. I rebooted the computer. I think I have enough disk space, but to be sure I deleted some bloat from possibly overly large files. I compacted, even though the program is configured to do that regularly. I temporarily disabled my antivirus program. I went into my webmail and deleted all messages that have arrived since my Thunderbird stopped receiving, in case one of them was corrupted. And probably some other attempts as well. Nothing has helped.

And now a second, even worse issue has fallen from the sky. Thunderbird opens. The folder list is where it always has been. The number of unopened messages in each folder is there in boldface, as always, but...the folders are all blank and I get the dreaded popup: "unable to open the summary file...." Have I lost my years' worth of carefully curated emails?

I've tried folder repair. I've deleted parent.lock. Etc. Nothing. Nothing. Nothing.

I will be super-grateful for any wisdom sent my way.

Environment:

• Thunderbird: 146.0.1 (aarch64)
• macOS: 26.2
• Language: Japanese version

I have been using Message Filters to organize my emails into various folders. One week ago, I added a new email account to Thunderbird. Today I tried to set up filters for the new account in the same way, but they are not working. Specifically, the "Condition" and "Action" columns in the Message Filter window are completely empty. Furthermore, I noticed that columns in the filters settings for my original email account also seem empty as shown in the attached screenshot. Even the filter setting looks empty, the original setting seems working correctly. I have uninstall and re-install Thunderbird, but it does not fix the issue. Could you please guide me on how to resolve this issue?

I greatly appreciate the community's support.

Can any one help please?

I help my brother inlaw with his computer, he has diminished mental capabilities when operating his PC. He has deleted his email address and its associated folders from Thunderbird and I cannot restore them for him. This is the only email address he has and does not remember the original password that was used to add the email address to Thunderbird, some years ago.

Regular Thunderbird user. Lester, Auckland N.Z.

I have TB 145.0 on a Mac.

When my trash gets pretty full, I empty the trash then restart TB just to have a fresh start. Been doing this for years. Well, I did it just now and when TB restarted I got a warning that said Thunderbird is an app I downloaded from the internet, do I trust it? First time that has happened.d I clicked on the button that said to go ahead and open it.

When TB opened, it wasn't aware of any of my email accounts. It's almost like I was opening it for the first time – except for 187 random old emails in an inbox.

Is there a way to recover from this? I had a lot of emails stored in inboxes and outboxes that would be disastrous for me to lose. They aren't there right now.

Please define folders: Sent, Sent Mail, All Mail: hesitant to delete any in these folders.

Deleting messages to Trash seems to NOT remove from All Mail. Currently have nearly 3,000 in All Mail. How to manage All Mail?

Thanks to expert users for replying.

Robert

A search showed that others have experienced this same error message, but as far as I can tell, they all were unable to access their email. These messages began appearing about a month ago. They pop up in Troubleshooting Mode. They did not in Windows Safe Mode. AVG and ZoneAlarm are not the culprits.

Somewhere over the past few updates, one virtual folder names have been overwritten with the one above in the list. See the attached image of the local damage. One multiple (but not all) machines, the spam and bulk virtual folders have been renamed to spam. This has occurred on both my gmail and Yahoo accounts. I am unable to simply rename them, as it fails on the remote rename to the already-existing name. The problem is the local title, not the remote one. I need to recover from this by re-reading the provider folder names and correcting the damaged ones locally. How do I do this?

Thunderbird is not saving IMAP message bodies to my home computer.

My settings: - Keep messages in all folders on this computer is checked. Under "Advanced" all the folders are checked for download. - Synchronize all messages locally regardless of age is on.

If a message has some significant graphics there is a fairly long delay before the body is shown. I know that this is a characteristic of IMAP. But if I close Thuderbird and return to it later, the same message will again have the download delay. Clearly it is not being stored on my computer.

Any help will be appreciated.

Thank you, Paul

I upgraded from windows 10 to 11 My son was able to recover my e-mail folders, but some large folders are missing and the remainder only have e-mails from 2019 or earlier. How do I recover those e-mails? I am no longer conversant with the current technology or terminology. I need simplistic instructions.

ANYONE know what happened to my Thunderbird ? Using Win 11, Thunderbird current version, I am unable to send messages. I get "outgoing server does not accept encrypted pw, try using normal pw" when I select encrypted pw. I get "outgoing server does not accept normal pw, use encrypted pw". when I use normal pw Have uninstalled Tbird, & installed fresh from Thunderbird.net. Comcast instructions are use “encrypted pw authentification. Port 465 or 587, have used both no help. Have changed smpt server pw on Comcast & in T Bird “saved passwords” Any ideas?

Recently, I needed to do a major upgrade to Fedora 43 so I did a full backup first for safety. After the upgrade, I needed to install Thunderbird to recover access to my email. For the first time in over 20 years, I had to re-enter the data for my various email accounts and now I find that my address book is gone. How can I locate the proper files in my backup and restore them while Thunderbird isn't running?

Hi all! I'm trying to get away from a Google Workspace account, but I need to import my old emails. At the suggestion of my host Hover, I've followed these instructions:

https://support.google.com/a/answer/14339894?sjid=15634570323802523034-NC

and created a bunch of ZIP files in Google Cloud Storage, as shown in the attached screenshot.

1) In the Thunderbird Import tool, I select "import from a file" in Step 1, and then "Import Backed-up Profile (.zip)" in Step 2 - is that correct?

2) In step 3 is to choose a file to import. How do I know which file to select?

3) then in step 4, do I unselect everything except mail messages? That's mostly what is important.

Thank you thank you!

I have transferred Yahoo mail to Thunderbird but no address book OR Folders came over. I need HELP to complete the transfer from Yahoo mail to Thunderbird mail PLEASE!!

Using Thunderbird 146 on Win 10. Trying to add existing mail accounts as already did in early Thunderbird 17. 1. one pop account (gmx.net) added successfully. 2. one imap account (gmx.net) added successfully. 3. trying to set up further pop accounts of gmx.net end in waiting loop although data check of program is ok. Checked and verified muliple times server data, account and pw.

Oy! If it isn't one thing, it's another:

Before this latest update (earlier this week), when I right-clicked on my Spam folder (int left column of the screen), the drop-down box would open. Then when I left-clicked "Empty Spam", all of the Spam folder messages were *permanently deleted.*

But now? They go into Trash and I cannot figure out a way to change this behavior. I should not have to select all the spam messages and then click <Ctrl> to get rid of them, it should happen when I click "Empty Spam."

How do I solve this/is there anybody there who can fix this?

After getting fed up with the Outlook app on windows. I decided to switch to TB. Now i can recieve my mails but can't send. I don't Use VPN and also checked if Windows Firewall is screwing things up. But those are allowed

Without the following. Unable to login to server (SMTP) smtp.office365.com with username *****@hotmail.com has failed (Translated from dutch)

These are my Settings incoming IMAP server: outlook.office365.com, 993, SSL/TLS, OAuth2 authentication, User Name = *****@hotmail.com outgoing SMTP server: smtp.office365.com, 587, STARTTLS, OAuth2 authentication, User Name = *****@hotmail.com