Thunderbird Community Forum

bold text As a message was being sent I tried to save it before the message was completely sent.

When the dust cleared all of my saved messages are gone in all folders and subfolders.

I closed Thuderbird and reopened it. - no saved messages.

I restarted my Macbook Air and opened Thunderbird - no saved messages.

All software was up to date. All other programs seem to be OK.

Now what?

Hello,

As per title, when I step on a new message not belonging to the first thread, the first thread expands automatically. This does not happen when I step on an already read message. I also tried to mark old messages as unread, and the same thing happens. Apparently, it started doing this today, which sounds weird as thunderbird last updated on the 15th, but I didn't notice this type of behaviour before today.

Thunderbird version: Thunderbird Windows MSIX package 1.0 - 140.7.0esr (64 bits)

Vertical view - Cards view

Hello,

I run Thunderbird 146.01 under Windows 11 Version 10.0.22631 Build 22631... TB pulls messages from a POP Server.

Though I have tried many fixes TB keeps reverting to requiring that I manually run both Spam Sorting, and Filter Sorting, usually after running these functions automatically for about a week.

Might someone suggest a fix that will have some lasting benefit?

Many thanks,

Lothar

TB 128 stopped downloading messages from 1blu.de on one 1blu account, another is working.

Switching to pop did not help, neither resetting password on server. Going back to imap did not help. Update to 140.7.1 did not help. In 140, TB connects, searching folders, discovers inbox, but no download of new messages. Inbox is abonniert (subscribed?) and messages are set to loaded to TB.

inbox.msf is updated today, the inbox has a date of Jan 26, latest downloaded email as of Jan. 21, inbox is 3GB and writeable.

In itself, the account at 1blu is ok: the release version (146.0.1) can connect and download messages dated until tonight (=right now).

1blu recommended to delete/reinstall the account but that would mean loosing tags and maybe xnotes.

Any help is appreciated. I write legacy and webextention addons for TB and can run test code in the console or in a temporary addon, if needed/helpful.

Thanks, Klaus/opto

How can I retrieve emails I deleted by selecting wrong parameters in the wrong area. I was in Thunderbird > Acct Settings > Synchronization & Storage and saw "Disk Space" settings. Without thinking I selected --> O ... Delete messages more than [ xxx ] [ ^v ] days old and I changed the number to... [ 90 ] days old. Like an idiot, I for some reason thought I was dealing with messages in "Trash"... go figure. So of course I then noticed in my email Accounts... all messages older than 90 days were removed from all of my folders I had set-up. Many of the folders are now blank, empty of emails that I had moved into the separate folders set-up for different information. I've explored tons of solution responses in "Support" but haven't found a solution to my problem. I really need my older emails back... please help! , Ron.

Hello, My SMTP server uses Let's Encrypt certificate. The website with the same domain has no certificate. Thunderbird refuses to connect to my SMTP server. Test connection to the server (STARTTLS) in account settings sais "The secure connection to the server failed" (or similar. I see bg localization). Another server with Let's Encrypt certificate. Test pases. Clicking View certificate shows webserver cert (from DigiCert Inc).

I can't send emails! :)

Regards! Valentin

I exported my contact list from Outlook to a CSV file. I then cleaned up the file to delete all the columns I am not using and now have only first name, last name, email address. When I import contacts from this CSV file, I only see the first name and email address in the address book. How do I display both first and last names and sort on last names?

This just started 4 or 5 days ago ( 2026.1.23 ish). I did not update TB nor make any changes to the account in question (that I'm aware of). The errors show up every few minutes, with a 'beep' sound and notification pop-up showing up each time - is very annoying.

I was running v145 when it started. I saw there was an update to 147 and installed that; same issue. I restarted TB into Troubleshooting mode and am still getting the error.

This is running on MacOS 15.7.3. Hardware is MacMini (2024) with Apple M4 chip.

Generally I still seem able to received & send emails.

I opened Activity Manager and Error Console. Error console doesn't seem to have much (using 'Multiprocess', with Errors, Warnings, Logs, Debug enabled). Activity manager shows things such as:

<my account name>

   Connection to server outlook.office365.com was interrupted.    09:49
   Failed to connect to server outlook.office365.com.    09:52
   Authentication failure while connecting to server outlook.office365.com.    09:58
   Authentication failure while connecting to server outlook.office365.com.    10:03
   Connection to server outlook.office365.com was interrupted.    10:10
   Connection to server outlook.office365.com was interrupted.    10:14
   Connection to server outlook.office365.com was interrupted.    10:20

There was an error or log entry that I was able to find a few days ago that made me think it was Calendar related, but now I'm not finding that message.

Is it possible to add different background colours to the three inbox folders I have now, please? I can change the colours of mail I send (via Composition), but not mail I get. It'd make it easier to prioritise work flow. I've found an old (2020) AddColors Add-On as part of the Unified Folders page but it's no longer supported and Firefox doesn't verify 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.

On first start of Thunderbird in the unified inbox there are sometimes empty messages listed with date of 1/1/1970 01:00.

When I click on any of them to view message, they always just blank empty body with no subject or sender. If I click on any other inbox, then go straight back to the unified inbox, the blank messages have gone.

I recently upgraded from v140-ESR to v147-Release and thought it may stop happening, but it still occurs sometimes.

Doesn't seem to be doing any harm but it's strange behaviour nonetheless, so thought I'd see if anyone else has experienced this or what you guys think could be causing it.

About a month ago my Filter log no longer works, the box is checked to show the filter log. I wasn't too concerned at first but know I noticed some of my good email are being deleted and I can't see what filter is triggering it to stop it. How do I get to log to start showing again?

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

Two questions:

1- Is it possible to assign defaults for ICS import so that you don't have to go through the wizard?

The reason for this wish is question two...

2- Why does the "Next" button in the import wizard appear in a different place in each step? I have a whole bunch of separate ICS files to import due to a workflow issue, and importing them is like playing whack-a-mole. It'd be a huge improvement if the "Next" button could stay in a consistent place so that even if defaults can't be set up, you can just click-click-click in one place without having to dance around with the mouse :)

In Windows and other applications when I hit space it moves the cursor or text I have the cursor in front of to the right a certain number of spaces. If I subsequently hit backspace it moves the cursor or text I have the cursor in front of back the same amount of spaces.

This is not how Thunderbird operates, if I tab the cursor or text I have the cursor in front of does move to the right 2 spaces, but when I hit backspace the cursor or text I have the cursor in front of moves back a single space at a time.

1) Is there a setting that I can change to have backspace move the cursor or text I have the cursor in front of the same distance back as the initial "tab" moved it to the right?

2) Can I adjust the number of space "tab" jumps from 2 to say, 4?

Thanks

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.