థండర్బర్డ్ Community Forum

I am using Thunderbird on a Macbook Pro 13-inch mid-2012, in a POP3 account

Thunderbird 140.10 is generally running fine, except that some sub-folders are not visible in my Thunderbird email tool view. I have a hierarchical

I have tried repairing the parent folders, but that had no effect.

The corresponding .sbd files are clearly visible in ~/<user>/Library>/<profile>/Mail/Local Folders/pop-server.<account> and being backed up in Time Machine backups.

Curiously, there is a much-truncated replica of some .sbd folders in Local Folders named /<folder-name>.sbd, all dated in 2013, yet the folder was created in 2017. I presume these refer to an update of Thunderbird that left some trash, and of no consequence. These are parallel to Archives and Archives.msf files.

Please advise on how to disambiguate this structure and recover views of existing mail folders not being displayed.

Since April 9, 6:14 PM CDT, most folders (e.g., Drafts, Templates, Sent) on my primary laptop in my primary POP email account, [edited]@bdcusa.com, have disappeared; and ALL SUBfolders in my Inbox have disappeared. Over 185,000 emails have vanished overnight!

On my primary laptop, I'm using Thunderbird 149.0.1 (64-bit) on the release update channel, still running 64-bit Windows 10 Professional, and have nothing backed up to the cloud.

Fortunately, on my secondary laptop, I'm using Thunderbird 115.18.0 (32-bit) on the esr update channel, running 32-bit Windows 7 Professional. I say, "fortunately," because ALL folders and emails are still there, so I know they haven't been vaporized!

How do I return all folders and emails for this email account to visibility and access on my primary laptop? Detailed directions appreciated.

So I have Thunderbird set to autosave every 5 mins.

I was drafting an email, where I had written quite a lot of text (as a reply) and for some reason my text went missing and there was no undo in edits

So I quit and went to drafts, nothing there.

I checked and autosave is on for 5 mins.

hit reply again. typed in some text, set a timer for 12 mins, quit.

Again, no save.

So why is "Auto Save ever " x mins not working?

I have tried using both a zip and unzip folders along with a backup folder for moving an export of the calendar. I export file is larger than 2GB and i find no way to make it smaller. or i can not find a way to export a pure csv file. All the above fails on import. please advise

Email older than several weeks in mail subfolders is blank in Thunderbird and looks like binary within buffer D:\WORKSPACE\Computer Tech\Config & Buffers\Thunderbird Stuff\Profiles\dq1ljd8g.default\Mail\Inbox Archive I assume that the mail resembling binary has been compacted, but it appears that Thunderbird cannot un-compact the messages. Need some help, please.

I have Thunderbird on Windows 11. I have been using Local folders for a long time without any problems. I now find that if I try to delete subfolders in Local folders, they reappear as if they had not been deleted. This applies to any mails I have received since 28th January 2026. Could this be associated with a windows update?

I used to be able to drag and drop emails from my inbox into an archive folder. That no longer works. I now have to right click the email, select "move to", then select the account containing the archives, then select "archives", then select the destination archive I need to send it to. On the right click drop-down there's an option to "move to *** again" but if you're moving emails to different archive destinations, that's not very helpful. Is there a setting to reinstate drag and drop?

On both my accounts "Sent" has popped up twice and on bjornla1bn@gmail.com I have been blessed with two "Spam" files. This is most annoying causing trouble. How can I correct this without loosing data?

I am using Thunderbird 140.10.0esr (64-bit) (latest) and for some time I have had a lot of trouble with it moving folders out of alphabetical order (but not all folders) and when I tried to move them where they belong it complains. Then today it can not find several folders. I can not even see the *.msf files and yet the utility "EVERYTHING" says the msf files are in the default directory where they belong but they are not visible from Windows 10 explorer and Thunderbird is not telling me that all folders are empty (including inbox). How do I repair Thunderbird? HELP!!!!!

When I drag an email from the inbox to a subfolder for that account it disappears from the inbox and doesn't reappear in the destination folder. Started fairly recently. Search can't locate it. Moving using the menus also doesn't work most of the time.

Version 140.9.1esr (64-bit)

Can somebody help please It says after I have entered all the details problem with configuration, password or account name I have set up an app specific password on icloud