Forum zgromaźeństwa Thunderbird

I have been using Thunderbird for 20+ years, maybe as many as 30. Forever. I have moved my profile across several versions of Windows and multiple computers. There are files in the root of the profile with a modified date of 2009. There may be older ones in sub-directories. There are 18 folders and 125 files. I suspect a lot of this is clutter left over from earlier versions of Thunderbird. In the Mail folder alone there are several hundred files and folders excluding the WDSEML files and actual emails.

I'm toying with the idea of starting fresh with a clean install of Thunderbird and getting on the correct release channel but I don't want to bring along what appear to be hundreds or thousands of unused files and folders.

I there anyone that can identify what profile files and folders to keep and what can be deleted?

Thanks for your consideration.

The Windows 10 PC crashed after an update, but I have command line access. I copied the profile folder from the Thunderbird installation to a USB drive, but can't find a way to move the subfolders (like 'name' and 'name.msf') to an existing installation on the new PC.

Is there a way to import these into the new installation?

I'm using Thunderbird 152.0a1 (2026-04-22) on Windows 10 64 bit. When I click the "Get Messages" button or File > Get New Messages for > [my e-mail account] nothing happens. The only way I've found to check for messages manually is by closing and re-opening the program.

Today, I have received an email, claiming to be from Mozilla support.

The text is garbled but it appears to contain words, 'hacking', 'paynalti', and 'auto-block'. These are words which immediately put me on security alert. I haven't opened the mail but have viewed it in preview pane. and screen grabbed the attached pdf image.

Any comments?

Thanks, William

Lorsque j'essaie d'ajouter un nouveau compte, la configuration est trouvé dans la base de données des FAI de Mozilla, je clic sur "continuer", dans la fenêtre Popup j'autorise Thunderbird a accéder à mes informations, ensuite j'ai le message "erreur d'authentification". Pourtant mon mot de passe est correcte.

What I want to do is to is export just the headers of emails on IMAP folders with an Excel VBA macro so that I can write filters to import into Thunderbird for deletion of old new letters and things of that nature, keeping only the important emails.

Knowing the message filter file format would also be nice considering that I can then just mass edit the filters without needing to recreate them each pass.

After downloading and running installer (Thunderbird setup 148.0) from Thunderbird website, Thunderbird opened as usual, showing my three email accounts. The 2 accounts I use for almost everything are both Yahoo accounts (yahoo.co.uk and rocketmail.com). But.. neither of these accounts will work without a yahoo sign-in pop which is pre-filled with an account name (example graphic attachment : thunderbird01red.jpg). 1 example shown but the same thing happens for both yahoo accounts.

The 'Next' button, which I assume will ask for password, does nothing.

I have attempted login via webmail. I enter account name, am asked for password and Yahoo insists on sending me a verification code - to the other yahoo account (the yahoo.co.uk account), which I cannot access! I then attempt to login to the other account to access my pass code and the same thing happens in reverse, telling me that a verification code will be sent to the first account.

Via Thunderbird, which has for years done all this automatically behind the scenes, I can get absolutely nowhere. Via webmail, I am in an 'impossibility loop'. I have cleared cache for each account.

Why won't Thunderbird allow automatic account login, as has been the case since the year dot. These are the 2 accounts around which my entire life is ordered - can somebody please help.

I set up a new account last week and need instructions on how to navigate and use this forum. I cannot find the question I posted. I got no email saying it was answered. I also need information about these codes I keep getting in my inbox after I've already logged in. I don't know what to do with them. I'm a newbie and need an instruction pdf if there is one. Thanks.

Why does every time TB updates it cause all my Yahoo accounts force me to get new passwords? Is it TB or Yahoo that is creating this problem of me having jump through hoops just to get the accounts working again. BTW the passwords in TB don't work when this happens.

Either this get resolved or I stop updating TB.

Since I updated Thunderbird to 153.0 on Thursday, I've noticed that every time I start Tbird, I get several notifications about authentication errors for the servers to which its trying to fetch mail. The list varies each time, but frequent offenders are Gmail, Comcast, and Yahoo, and occasionally Apple and Microsoft (outlook.office365.com server).

I did not see this issue prior to the update. Sure, once in a great while (< 1x/month), a single server would throw such an error, but now, it's every time I start Tbird.

All the accounts are accessed via IMAP, and those that support or require OAuth2 are so configured.

If I go to the mailbox a little while later, I don't get any errors--this seems to be limited to startup.

I check 15 mailboxes, though many get very little email.

A search from Bugzilla's home page shows three similar reports, none newer that 3.5 years ago. (I can't delve deeper, as my credentials apparently expired and the signup confirmation email has not arrived yet).

Is anyone else experiencing this? Is there a log of such events (or a way to create one)? ...thanks!

Windooze 11. TBird 152.0 installed on June 20th. Now it seems like TBird is not displaying HTML emails properly. They are displayed but not at the beginning. The first line is sometimes just the bottom half of a sentence in the email (if that makes sense). I can't scroll back to the beginning. If I go to outlook and display the same email it displays fine.

Did something change in 152.0 to cause this?

Thanks, Ed Mazurek

A return/Enter command causes two line spacing. I have unchecked Use Paragraph Format in Global preferences. Shift Enter also causes a two line space/paragraph spacing.

When Thunderbird "thinks" a message is Spam the spam option on the header is already grayed out, is it ok to delete it then and if it is learning what is spam, how come I continue to get spam email from the same senders?

I used to click the incoming Email and a box was highlighted for Reply? I have no desire to move from Windows 10. Why make it annoyingly difficult for older users?