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On the 20, of October I was forced to re install Windows 10. Kept my data but I had to re install all my apps. With Thunderbird I follow the same procedure I used with Firefox: After installation I copied the profile folder from my backup and replaced the new one. That worked out well. With Thunderbird, I followed the same procedure, all my emails where there but not my local folders. I am attaching several snapshots to illustrate my steps. Image 1 "local folders now" Image 2 "Profile Folder". (why there are 2 sub-folders)? Image 3 "Mail in the profile folder" Image 4 " List of folders in my Local Folders" The are there, how do I get them back on Thunderbird in the correct place "Local Folders"? Thank you for your help again. Regards Ilio Pieroni

I have seen many questions a bit like mine but they all refer to downloading emails. Mine is different: "The folder 'Trash on my@email.com' could not be compacted because writing to folder failed. Verify that you have enough disk space, and that you have write privileges to the file system, then try again." It now happens on two different email addresses (one is POP one is IMAP). Trash seems otherwise to work and can be deleted. But still this alarm. MAS OS 15.1.1 (24B91) - latest Thunderbird 128.5.2esr (64-bit)

I was happily using TB 78.14.0 on Mac OS 10.9.5 and I switched to using TB 140.6 on Mac OS 12.7.4, and it's now unusably slow. I've tried: troubleshoot mode with add-ons off; compacting folders; removing and renewing msf files; emptying junk and trash. Is there anything else, or is this just a failure or incompatibility of the app? I can't see that there's any antivirus app that might be interfering. Can something go wrong when you export the files from one TB into another? I would be grateful for any suggestions. Tim

My most recent update is VERY difficult to understand and use. Is there any other way to ask for help with the endless really simple puzzles that this new TBird brings. I don't get any answers in this forum - or there may be answers but I can't find them. Where do users go to get quick how-to-do-it answers?

I just upgraded to 128.2.2esr and cannot receive or send messages after the update. I have restarted the computer and tried again - still nothing. I'm unable to use a tool that is critical for my daily needs.

Trying to send just says "Connected" or "Sending" but never completes. Worked fine before the update which was just in the past hour or so.

Same issues with downloading new email or sending email for all accounts. :(

Anyone else having problems? Ideas?

Thank you!

I'm having an issue with some of my filters not working. I've checked the several times and they should be set up correctly, but, for some reason, they don't perform their respective actions, even when I press "Run Now".

Also: I recently changed the sorting of my e-mails to be threaded by chain. I like to have all of my most recent e-mails show up at the top, but, within each thread, the most recent e-mail shows at the bottom (see the supposedly-attached image). Is there a way to flip this?

Thank you in advance.

Thunderbird 138/139, Windows 11 Pro 23H2. While composing a message, after a few lines the app freezes. Both the compose window and the main TB window freeze. Only opening the Windows Task manager allows me to close them. This did not happen with earlier versions.

If I save the message every few seconds while composing I can get most of the message back and continue after restarting TB. This behavior is the same in both the normal and troubleshooting TB modes. I can't even find a crash log to send to Mozilla.

Where shall I look next?

Thank you!

I installed Thunderbird and typed in my Office 365 email information to connect my account. Thunderbird found the correct IMAP settings, which I verified on Microsoft's website. It proceeds to open a browser so I can authenticate my account. After that succeeds it starts downloading all of my messages & folders. I thought everything went fine until I attempted to send a message. I get the following error:

Login to server smtp.office365.com with username me@mydomain.com has failed.

It gives me the option to enter a new password, which doesn't make sense since it's oAuth2 but I created an app password to see if that would work, and it didn't. The only other options are cancel & retry which don't help either.

I thought maybe something went wrong with the authentication process so I uninstalled thunderbird and started again with the same results. I've tried many other server settings, but nothing works, so I'm here.

Current Settings:

Server Name: smtp.office365.com User Name: me@mydomain.com Authentication Method: oAuth2 Security: STARTTLS Port: 587

I've tried: Using Port 465 / SSL/TLS Using Port 465 / STARTLS Using Port 587 / SSL/TLS Changing Auth method to Normal Password and then using app-specific password. Uninstall / Resintsall

One final thing to note: I followed the same process with my fastmail.com account, which worked flawlessly. I can send & receive fine.

I converted my old Outlook emails in to MBOX using the Syscurve conversion software, and then moved the MBOX file into my Local Folder for Thunderbird. When I open Thunderbird it sees the file, but does not see the folders or messages inside the file. The Local Folder has the following three files in it (plus the trash, etc.): output_20251127110416.mbox 4,194,310 kb output_20251127110416.mbox.msf 2 kb output_20251127110416.msf 2 kb Thunderbird shows the output_20251127110416.mbox in the Local Folder but says no messages found when I click on it. How do I get Thunderbird to see the mbox files?

To my new computer Thunderbird has just fetched the INBOX-mails from the IMAP-server, not my many subfolders, not the SENT-folder, not the SPAM-folder. This has previously worked when I changed to a new computer. How do I get Thunderbird to transfer these mails.

This is second request (can't find the first). I need to import multiple (bookoo) .EML files into TB 115.10 to later move into "folders". Several weeks ago I somehow found someway to import a single .EML file (downloaded from an old ISP) into TB -- and then got busy with other projects -- and now cannot figure how I did it. I did not use an extension (ImportExportTools NG) -- just the native tools in TB 115.10. If anyone is familiar with importing EML files -- sure would appreciate suggestions. Thanks.

I am now getting a spinning wheel with annoying frequency while using/trying to use Thunderbird on my MacBook Air 2017 running Monterey. Everything was fine for the first 6-9 months, but over recent months the spinning wheel has appeared more and more frequently while I'm trying to read mail, answer mail, scroll through messages, etc., etc. Now it comes up every few minutes and delays me doing anything for about 15-30 seconds at a time. It's really frustrating. I recently ran Onyx, which was designed to clear cache, etc and make everything run smoothly. But the only program it required me to quit before it started was Thunderbird. Is there some cache or something I need to clear on a (semi-) regular basis to keep it working at a reasonable speed without this godforsaken spinning wheel interrupting everything? Thanks for any/all your help.

Hi

 I am using version 115.14.0 (64-bit) and I am using Fedora 39, up to date OS.  I have been using ThunderBird for a very long time.  I have been experiencing an issue which, unfortunately, seems to come and go.  I am experiencing this issue on 2 separate physical computers.  How can I restore the list of emails under any account when they are not visible?
 This is very troubling ...

Robert

There used to be a menu in the message header (lower right of screen) that included viewing the message source. I accidentally deleted it and cannot find how to restore it. I have looked through the Config editor and main menus and cannot find an option.

I can not send out emails from Thunderbird. I get the following message "Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP) mail.xxxx.ca timed out. Try again." I have not been able to find an answer to this problem. I hope you can help. Please note I am a Senior so please be patient with me. Thanks, Al

hi all today thunderbird stopped downloading messages from the mail server

a manual d/load doesn`t do anything

the mail is backed up on the server & i can`t get a d/load to happen ( manual or auto)

how to auto- clear the server so i don`t keep getting maibox full messages or is this the inbox on my computer that the message refers to

i keep deleting the junk files