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I've lost all the contents of a folder in one of my TB accounts, including all subfolders. Mysterious, and all the more so since another email folder which wasn't a subfolder of this one is now in there as a subfolder. Everything else in that folder has gone. Nothing has disappeared anywhere else. I've trashed and rebuilt global-messages-db.sqlite but this hasn't helped, no difference. Any suggestions? Thanks!

I'm finding that folders under my email heading are missing, until I find them completely out of alphabetical order. Then I move them to where they belong, and a day later they are somewhere else. How to correct this?

When a message is removed from a folder via that folders' Retention Policy, is the message permanently deleted or does that message go to Trash? I use Thunderbird with Gmail via POP. Thank you.

I want to sort alphabetically my subfolders. Look, on the image "before", I have the subfolders "22" and "23" that are in "2026-02-fevrier". I take them and drop them in "2026-03-mars", and you can see the result on the image "after". I want it to be in the right order, but its not. (22 is between 09 and 10, 23 is between 01 and 02...) Can you help me ? Thank you :) Matteo

When I try to add my Spectrum email back in Thunderbird, it failing to connect when I enter my password. When I go to spectrum.net, I have no trouble logging in with my password. Whaat do I need to do to add my Spectrum email.

I opened Thunderbird and it seems that all my emails from Inbox are gone. They weren't moved to Trash, they were just gone. My folders are intact and also my Sent emails are still there. This is already the second time in 6 months that this is happening. I haven't changed any settings, there were still disk space left, I haven't clicked on anything. If I go to Troubleshooting Information -> Profile Folder -> Inbox and open in Notepad they are still there, however the extent of my IT knowledge ends here. What could be the issue and how can I restore my Inbox?

Cut the cable a couple months ago. Have been using Firefox/Tbird many years. Stopped being able to access old email address of 25 years a couple days ago. When opened Tbird would always got to old email and say "couldn't log in" or something. Would cancel out of that twice, click on new address and collect new address email. Old email was always there, used it as reference during transition. At settings chose new as default and deleted old address. Looks like the boxes checked would not have deleted old email but it's gone. 3500+ of them. No warning, message, choice, nothing. took zero time. Cannot change in Mozilla login to new email address. Tried Tbird import tool, could seem to figure it out. Also need to update email in Mozilla. Help. Tks. x@yahoo.com

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Hello, so finally this happens to me too. I lost all my emails in Inbox before August 2025. I think it happened after one of these usual alerts 'you should compress emails'. I did this in the past 6, 7 years and nothing was lost so far. I also have plenty of space on my computer, that's not a thing. I tried a couple things I found in web but doesn't help. Couple emails that I had for example in an 'important' folder are still there. I'm really annoyed. I didn't had a glue at all that this compression alert will delete files in the inbox one day, only those in the trash box. Maybe there is a last chance to get them back but I'm afraid that they are gone forever and I will put everything from my inbox into an other folder in future or maybe even better go back to Apple Email where this never ever happened in the past 25 years.

Thank you, Chris

I just deleted all my emails in all my folders in my host email account thinking that I was saving them locally in Thunderbird but I've lost all my emails. Is there anyway of recovering them?

I'd like to reduce the size of my profile file xxxxxx.default . it is currently 17.2 GB. If I delete several of the folders in the "Local Folder" (example "sent mail 2010"), will the file size shrink or does it only expand to fit the folders.

It's been months since I have been able to access my Thunderbird email. I have forgotten my password and tried all the self-help instructions, but nothing worked. Please help me.

I'm looking for a developer/programmer with experience in building Thunderbird extensions. I have an extension in mind but need somebody to build it for me. I would pay for the effort--on successful implementation. Please let me know if you know anybody who would be interested in a small project. Thanks.

I have forgotten my password for server mail.uwclub.net with username [edited] @uwclub.net. How do I reset it please

I have an @proton.me email account that I am trying to include on Thunderbird for visibility, however I was not able to do that because it said the proton.me server would not recognize the settings. Is there some way for that email address to be on my Thunderbird email program

No longer a Spectrum cable user. Been using Firefox/Tbird for years. Will I still be able to use existing (charter.net/Spectrum) email address via Tbird?