Thunderbird Community Forum

To be clear, I seriously doubt the problems I am encountering are TB's fault! The problems may be my fault since I've grown older, I've tended (believed) using new versions of software present my mind a BIGGER challenge than using the older software/version I have been successfully using? I'm still using Version115.10.1

After our ISP chose to start using Zimbra Oct. 7, 2025 and their tech support could not assist me in getting TB working the had me remove POP3 settings for TB and change to IMAP with their software.

FINALLY someone helped me get TB working with IMAP. For 3 days grrr. Now the ISP says I need to use their web mail, Zimbra.

So might downloading the current TB version and somehow get the In box, all the folder contnets etc. over - into the new TB help?

I was going to backup everything tonight, now I have little to NO hope, without help!

THANKS & remain WELL plus be SAFE!

Robin

I use Thunderbird to access my Hotmail account. I normally work on my Desktop Windows 11 system but have a laptop Windows 11 which I seldom access email with. When I just tried to update the laptop Thunderbird mail I eventually get the Thunderbird message "Unable to write the email to the mailbox. Make sure the file system allows you write privileges, and you have enough disk space to copy the mailbox". There is enough free space on my drive and it succeeded writing 10522 messages before it came to a halt. I notice that the desktop is at 140.4.0 and the laptop is at 144.0.1 and help says they are both up to date.

Since the Desktop mail is up to date it would seem the quick solution is to replace the mail folder on the laptop with a copy of the mail folder from the desktop. Will this be a problem since they seem to be at different versions. Version 140.4.0 on the Desktop and 144.0.1 on the laptop.

How do I get Thunderbird to download from two mailboxes in the same account?

My friend has an In box and a second one called Wrenches that was set up in his Zimbra webmail. How can he POP download both mailboxes? It's fine if the messages all end up in the IN mailbox.

Confused. Version 144.0.1 | Released October 16, 2025 Says 32 bit. I thought I downloaded 64 bit.

Problem: Freezes when I click anywhere on TBird desktop

How do I address the freezing problem?

Thanks Robert

with some changes with a default search for passkeys, I am no longer able to use thunderbird mail as is, as after spending three hours today, I was unable to add a 2nd account that has been accessed via gmail for a long time. I am wondering what other email problems other than thunderbird might have similar features,. as thunderbird has been rendered unusable by new code/passord, passkey requirements. I was looking at spark, but their interface is not as helpful. Thoughts! RIP Thunderbird mail, a long time friends, but time to move on, alas

Downloaded the Thunderbird U.S. holidays to my calendar. My calendar is overloaded with miscellaneous and unwanted holidays. I've tried methods on the internet to delete them from my calendar with no success. I'm sure there is a method, but no success in finding it. Please help! Do I need to unistall Thunderbird and start over?

Hi, is there a way to setup access shared e-mail accounts (they appear as unlicensed accounts in office 365 business accounts)? In office365 business accounts, it is possible to setup general mailboxes like sales@ etc. and grant access of said mailbox to user account of choice. OAuth2 login for these accounts does not exist, instead, login occurs via user accounts and then the shared accounts appear for such user, it is not possible to login with or setup shared mailboxes with a password as it is normal (licensed) user accounts. According to Chat-GPT5 it is difficult or impossible, it says login name would be something like licensedusername@company.com\sharedmailbox@company.com, so for example, eric.smith@contoso.com\sales@contoso.com But that doesn't seem to work, like a silly suggestion, outlook.office365.com server then asks for credentials of said eric.smith@contoso.com\sales@contoso.com as if it were a single username! so if you have any info if that is possible, any work-around, pls let me now! Thank you - Andreas Hartmann (ADEC Technologies Ltd)

When I try to download messages from Proton’s inbox, I get this message: “Thunderbird. The current operation on ‘Inbox’ did not succeed. The mail server for account loiscodling@proton.me responded: no such mailbox.. .”

If I access the account directly through Firefox, the inbox is visible with a large number of files in it. Mail in all the other folders on Proton has downloaded correctly to Thunderbird, but not the inbox.

My wife’s Thunderbird has had problems for several weeks. To repair them, I have disconnected from our e-mail provider (Proton.me), & reconnected to it. Everything seems to be fine but her Thunderbird Inbox. There are no emails in it, but it insists there are two (2). I have tried to compact the folder & to repair the folder, but these actions have no effect. How do I get her inbox clear of this problem, so I can focus on her bigger problem?

I have been using both the new version of thunderbird and an older version that I prefer the looks. The older version I have set to disable updates and it still shows updates disabled by administrator. BUT, for some reason, this version has updated to the newest version. Any idea of how this happened?

Hi all! I use Thunderbird with my company Outlook, and recently I've been having an issue of some emails being deleted, but not moving to the trash. I can still delete other emails, but these eight or nine specifically still show in my inbox. When I try to click on them, the subject and sender in the viewer shows whatever email I was looking at previously, but the message itself is blank. I've tried every way of deleting them, but nothing seems to be working. They don't seem to have anything in common, like having a certain attachment or being from a certain sender. Any help?

Hello, I received an email from Spectrum (.TWC) that I needed to change my password by Nov. 11th. I did change it last evening. Now today I cannot receive my email via Mozilla Thunderbird, I receive the pop up to Enter the Password when I open it. Can you help me with this. Thank you for your time and efforts.

Hello:

My Windows Thunderbird has become unresponsive, taking forever to connect to my various accounts. I suspect the problem is with my GMail account--which is not my primary account--is causing the problem, but I am unable to un-sync GMail's All Mail folder.

I was able to get into troubleshooting mode, but TB was still unresponsive.

I have copied the profile in question to my Linux machine, with TB V140.4.0esr, to try to repair the profile, but the problem is recurring there as well.

Is there a way to manually edit the profile file(s) to remove the GMail account from Thunderbird?

Any insights would be much appreciated.

Thanks

DrP

Hi

Thunderbird is crashing with error message: expected value at line 1 column 1

Error message in crash dialog box: " Thunderbird Crash Reporter Thunderbird had a problem and crashed. Unfortunately, the crash reporter is unable to submit a report for this crash. Details expected value at line 1 column 1 Restart Thunderbird | Quit Thunderbird "

troubleshooting so far:

• How often? periodically (sometime within minutes of loading, sometime hours).
• uninstalled, rebooted, reinstalled Thunderbird (using winget)
• created a NEW profile (have to re-download mail / folders ... taking day(s?) ... since when I walk away and come back hoping download has finished but it has crashed) ... not sure when it will get caught up ( main mail file is huge (20+GB) )
• tried: accessibility.force_disabled changed from 0 to 1 (found suggestion in a google search)
• tried: troubleshoot mode (even though I don't use any add-ons)
• I use multiple mail accounts (although currently I'm only using main one, trying to isolate problems)

Thanks for help.

URGENT! My emails are from 5 roadrunner.com (former mail.twc.com) New owner Spectrum is closing us out of our accounts. How can I protect my 15 GB of emails?? Will they disappear if I can no longer access roadrunner? I'm not sure if the server will be swept, but it's in the works. Please tell me how I can bulk save these lifetime of emails...fast! Thank you! p.s. I am computer illiterate and very nervous! I will appreciate step-by-step. (I thought I was safe downloading them to my computer with Thunderbird, but now I think I need to do more to secure them locally.....thank you!

Thunderbird 140.4.0 / Win11Home 24H2

For many years now I have had several email accounts 'share' Thunderbird's Global Inbox (Local Folders) and this has worked fine (by the way I'm using POP throughout).

For a long time I have also had a separate email account (call this account A) using its own Inbox. Again, all has been working fine.

Very recently I created a new account (Account B) and directed this to use Account A's Thunderbird inbox (via Account B's Server Settings, Advanced...) and selected the "Include this server when getting new mail" option. All looked fine at that stage (I did not think to go back and check Account A's Server Settings, Advanced...). Under Account B's Copies and Folders I also directed Account B to use Account A's folders.

As I expected, Account B did not have any of its own folders created.

On selecting Account A in the folder pane and checking for emails (via the Get messages icon at the top of the folder pane), only Account B was checked (as evidenced by the status bar messages scrolling through at the bottom of the window). This was most perplexing - had I somehow lost a whole bunch of messages that I knew should be sitting in the inbox at the mail server?

However, I soon found the culprit. Account A's Server Settings, Advanced.... were completely greyed out (and so effectively disabled) - see image attached.

So setting up a 2nd email account to download to 1st email account's inbox disables downloading of 1st email account's inbox messages. No warning of this is given - it just happens behind the scenes.

Is this all a conscious design decision (and, if so, why?)? Or is it simply a bug? Is there a solution / workaround?

Regards, Bazzaman

Just to be clear, selecting or not selecting "Include this server when getting new mail" option has no impact on this one way or the other - it is the attempted sharing of the inbox that gives rise to the issue.

I recently downloaded Thunderbird. Due to comcast transfer of email to yahoo, I now have a yahoo account with a comcast email address. Using the export.mail.imap.yahoo.com incoming server, I was able to get all my mail into Thunderbird. At some point, I was asked to compact my folders. I replied yes. After that there were only 2000 messages in my inbox. To recover, I had to change my settings for my email address to an incorrect one and then back to the correct address. That started the rather lengthy import process again. My inbox is 3GB. What went wrong and how do I avoid this from happening again?

The option "Apply current view to --- -> Folders and subfolders ..." does not work! It ONLY applies to the current folder and also is no longer active after restart of the program. This is VERY annoying!