Thunderbird Community Forum

I was working busily in Thunderbird email, where I have a number of subfolders under "All Mail" where I store replies and such. One of the most important subfolders (which itself has many subfolders) has suddenly disappeared. I've looked manually through other subfolders, to see if I somehow moved it by accident, to no avail. Is there a way to search for a subfolder, or can anyone suggest where it might have gone?

The last new email I've received on Thunderbird for one of my accounts was on 5/13/2026 at 12:02 p.m. Every time I open thunderbird it tries to re-download the entire yahoomail account and times out. I have deleted all emails from the yahoo mail box from 5/13 and backwards. All spam emails have been deleted and the trash can has been emptied. Per online instructions I have also deleted the popstate.dat file, tried to repair the inbox file by right clicking on it, going to properties and clicking repair folder. I also tried to compact the folders, and have turned off my virus protection and nothing seems to be working. I also tried a new app generated password from yahoo. Current setup is pop.mail.yahoo.com port 995 SSL/TLS, authentication method = normal password. Any help would be greatly appreciated. Thank you!

Had my computer recently setup linux mint with Thunderbird for my email access. I used the automatic setup to transfer across from Microsoft Hotmail/outlook system.

now all my emails -time sheets pay advice plus plus important emails are now being delivered automatically to deleted file. Not the inbox

I had a file callede archive where I would store all my previous timesheets pay advice these apart from previous month have been deleted - suspect its a automatic clean up after ex many days so thats lost permanently

How can I resolve this issue of the inbox going to deleted file/folder ?

So I have a list of folders some of which are the default folders some are custom created.

When I try to re-order these it is very hit or miss: I select a folder, drag it to where I want it to go, wait for the blue placement line to appear and it may or may not re-locate. Or I simply can't move the folder I want to move and so I move folders around it in order to achieve the layout I want.

It is as if success depends on whether Thunderbird is in the mood for a particular move to happen and I find it really frustrating. It should or shouldn't work, it shouldn't be that it works sometimes.

What is going on with this?

Good morning,

this morning, after logging into my Thunderbird account, all my subfolders from my main account were in the "Trash" folder, and there was no correspondence in them. Folders named "V 2" also appeared in the Trash folder. Could you please advise if it's possible to restore these correspondence and folders to their previous state? I also tried using the "repair folder" function, but it didn't work.

Best regards and have a nice day.

I'm having a connectivity issues. Did some searching which directed me to the Appdata Profiles folder. When looking inside I see Mail and ImapMail. Both have numerous folders inside. Too may I believe. Based upon the screen prints of the folder's contents, do you see conflicts?

I have three email addresses with Outlook.com.

Pop.windstream I have not used in many years. Not sure what others I could possible delete.

Thanks.

I have TB version 140.11.0esr (64-bit) running on Win 10. I have multiple accounts and each is set to check for new messages every 10 minutes (nothing else is ticked under "Server Settings). Everything is ticked under "When new message arrives" (and default sound is used).

When new messages were available to download, TB used to play alert sound (and I would know to download new messages) but now TB is sounding (the new messages) alert every time it checks for new messages even if there are NO new messages to download! How do I revert to the alert ONLY being sounded when there ARE new messages to download?

I want to create a filter to match any of the 20 addresses on my list. Rather than manually repeating the 'add rule' 19 times, I hoped to import all 20 at once.

Creating a filter with 'to' and putting a comma separated list there doesn't seem to work; the addresses won't be matched. I can't find a config file to manually edit in my profile directory for filters, or an extension to create this filter.

My end-goal is to add this 'blacklist' of my old e-mail addresses that have been leaked to a spam filter. These messages already end up in my spam folder by a rule at my provider, but I want to mark them as spam too, so I can sort through the spam folder more easily to find false positives.

Thanks in advance!

I have folders designated A-G, H-Q, etc. and in those folders are subfolders. The A-G folder displays as though it is in Italic font and I cannot move a folder into it.

Wise, a currency transfer business, claim to have sent me several emails as part of a two stage verification process. But they never arrive! They will not accept that the problem is at their end, they say it must be my email programme which is Thunderbird. I have searched everywhere but they aren't to be seen. They say to look in my spam folder but Thunderbird doesn't have one - Thunderbird flags up what it thinks is spam, (usually correctly), but still deliver to my Inbox. Has anybody any suggestions as to what I should do? Until I login, I cannot use my account.

The oversized menu box cuts off the the "Save" key and I can't re-size the Message Filter/New Filter box nor can I slide it up for access to the button on the very bottom. Windows 10 Home, Version 22H2, Installed on 9/14/2021, OS Build 19045.6466.

I've tried a dozen fixes suggested by Duck AI and none had any effect on the Filter box. Here’s a concise list from Duck AI of every fix I tried:

   Hold Shift while opening the Filter menu (compact popup).
   Shorten long filter names (Tools > Message Filters).
   Change system UI scale (Windows Display scaling).
   Toggle toolbars / layout to reclaim space (View > Toolbars / Layout).
   Use Tools > Message Filters dialog (resizable) instead of the menu.
   Add userChrome.css rules (multiple variants) in profile/chrome/userChrome.css to force max-height, scrollbars, reduced font/padding:
       Generic menupopup rule (max-height: 420px, font-size: 11px).
       Targeted rule including .filter-menu-popup and #createFilterFromPopup (max-height: 300–520px, font-size: 10–11px).
       Final variant replacing values with 360px (no effect).
   Attempted diagnostics via screenshots and Developer Toolbox (Ctrl+Shift+I) — determined screenshots showed Filters dialog, not popup.
   Determined the "Create Filter From" list is likely a native Windows popup (userChrome.css cannot style).
   Workarounds proposed:
       Use the resizable Message Filters dialog to create filters manually.
       AutoHotkey script (Ctrl+Alt+F) to open New Filter and pre-fill From/To/Subject from the selected message (provided full script).

My ISP uses TLS 1.2 but I still can't get my email. This just happened suddenly last week. I know it is not my ISP because the web mail still works on my phone. Any clues? Thanks GMc