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In Thunderbird, I am trying to create an email filter, however, the screen/window display will not show the "OK" button to allow the filter creation to be saved for usage. After several hours, I have tried all the resolution changes, "resizing" the screen/window, "window" stacking, cascading etc, - nothing works to lengthen the screen to show the "OK button. I have other filters created previously, that work, but editing with changes have the same display issue. (HP Pavilion laptop-Windows10, i7) It appears that the bottom of screen is in a fixed position -see screenshot.

Any suggestions appreciated,

As soon as I click on the Thunderbird Icon to start Thunderbird I get a Yahoo Page covering over my Thunderbird page with no practical way to remove the Yahoo page permanently? This is like a scam page or something from a devious hacker?

on my desktop computer when i click on a message thete is another window to the right of the message withe the opened up message. I can't get this to happen on my laptop computer.

Good morning; while trying to configure Thunderbird, I accidentally disabled the shortcut buttons I always use. Unfortunately, I can't find the location in the settings where I can re-enable them. I've attached a screenshot. I'd appreciate your help and pointing me to the right place. Regards.

My folders used to show a yellow diamond when there was new email in the folder. The folder colour does still change to blue to indicate unread email. When I open a folder, the yellow diamond still shows up on new email, as well as the unread flag. What have I done? How do I configure Thunderbird to show that yellow diamond on folders with new email?

Hello,

I'm new to thunderbird and i'd like to customize the layouts. I increased the width of the spacesbar by messing with the userChrome.css. however now it is overlapping on the other panels... I managed to fix it on the mail panel, but not the others. (see attached) can you help me find the proper CSS property?

thanks you.

After a recent change the browser scroll always goes to the bottom of the page. Before it was always at the top of the page. I found no way in Firefox to reset this function.

Using Acronis True Image for Western Digital (ver 2025 build 41936) to backup my files on a daily basis. Recently the backup program has been stopping and reporting that it cannot access some Thunderbird files, even when Thunderbird was not running (1st image) I tried 'Compacting all Folders' in Thunderbird but the result was the same (2nd image). Lastly, I tried clearing the cache - the result is the same. In all cases Thunderbird was not running during the backup.

i realize that this is not a Thunderbird issue, but I've been unable to get help elsewhere. I wondered if anyone might have a solution since Acronis apparently sees the file as being accessed - is there a way to remove that?

Hi

When Thunderbird is started maximized it overlap taskbar if is set to hide and taskbar won't show until Thunderbird is minimized and maximized. Another way is to press the Win key two times. Then the hided taskbar can be shown/use. The same thing happens to Firefox. Only when is first started. Then if Firefox is minimized and maximized, press Win key two times, press F11 two times then the hided taskbar show/hide normal.

It is a setting that can be changed to start Thunderbird and Firefox in full screen and do not overlap hided taskbar?

I would like to know how I can control the timing of compacting the mailboxes under Linux and Windows. The reason why I ask is that every time compacting needs to be done, the prompt to do so comes up as soon as the Thunderbird interface finishes loading but before all of the mailboxes are finished updating,which can take several minutes. If I accept the compacting, it inevitably returns an error that it could not run because the mailboxes are still updating. Or I can cancel until I go through this the next time.

It would seem like a simple matter to either give the user a way to delay the compacting process, or have Thunderbird not initiate it until it is safe to do so to begin with.

I have tried to research this but have not found any answers.

bold text Hi, I have Yahoo mail and Thunderbird. I want to use TB as my main mail but still keep my Yahoo account as the data is stored by yahoo and I suspect I will loose my history if I cancel..

I leave my email and a couple of other tabs open when I shut down. I cannot make TB appear as a tab, it always opens full page.

Any ideas?

Thunderbird in the past showed a red number above the dock icon telling me I had so many new emails. The newest version I now have does not do that and I cannot find a setting for that. Anyone know how to get the number back????

no matter what i enter in settings, any time i minimize thunderbird in win 11 to tray, and then click on its tray icon to reopen it, it opens at this odd sizing every time. i always put it fullscreen again, and minimize, then go to open it again, and there it is, at the odd size again. no other program does this in my two machines. just thunderbird, and i have never set this size and placement, it just seems 'forced' every time, making me have to resize it every time i open it from tray.