Thunderbird Community Forum

The New Line (Enter) key always double spaces, which is intended for paragraph text. But for tabular text, this makes unnecessary white space. What key combination generates only a SINGLE new line character rather than TWO of them?

Example: Donor: xxxxx Email: xxxxx Phone: xxxxx Billing Address: xxxxx Bank: xxxxx; Account ending in xxxx

This screen defaults to single spacing; why doesn't Thunderbird allow it?

The option "Apply current view to --- -> Folders and subfolders ..." does not work! It ONLY applies to the current folder and also is no longer active after restart of the program. This is VERY annoying!

Until today Oct 14, 2025 I could edit the subject line on my incoming e-mails by right clicking the subject line and use 'edit subject'. As of this morning that option is not available in the context menu that comes up when I right click the subject line for an e-mail in my inbox. anybody have any ideas? I use this function constantly in my business to add the customer name to the subject line for customer searches and if I send a copy to a vendor so all messages pertaining to that customer are easily found.

I can't find where to edit the rules that I previously created for what will happen when a certain mail comes to my mailbox. I set up a rule that marks a mail from a certain sender with "Important" and also sends a copy to another mail adress but now I can't edit the rule. Can someone help me with where I can find the rules and edit them?

My inbox was inadvertently moved down in the list of folders and I am not able to drag and drop it back to the top. It looks like there used to be a "Manually sort folders" extension but it no longer works. Is there a way to reorder folders manually? I use 140.0.1esr (64-bit).

When I compose email messages, I want them to be plain text only. In older versions of Thunderbird, this worked fairly well, but in new versions, even though the message is sent as plain text, it is not the same text that I type into the editor.

For example, if I begin a line with "> " (greater-than space) to indicate a quotation, Thunderbird will add another space at the beginning. I once tried to send "-- " (dash dash space, a signature marker) in a message, only to find that Thunderbird replaced the space with a non-breaking space.

I didn't ask for that. I want the content of the message that I send be exactly what I type, nothing more, nothing less. No reflowing, no subtle character alternation. Is there a setting to disable those mis-features?

Every time I want to print an email, the default copy number on my printer menu is shown as 2.

I don't know how, when or why this change [from 1 copy to 2 copies] happened.

I wish to 'reset' the default copy number to 1, so I don't accidentally print a second copy and waste ink, etc.

When I want to print documents stored on my PC, the copy number field on the printer menu is blank, allowing me to enter the number of copies I want - so the issue appears to occur only when I print emails.

Others have mentioned this but I'm not sure if there is a fix/anything is being done. The threads are all from previous Thunderbird versions.

I use Thunderbird for work. I have to find specific emails and folders - get to them quick. I am no longer able to do this. It's really distressing.

This is something really basic, that should be the default or else really easy to change.

I'm on a Windows machine and using Thunderbird 140.3.0esr. I've been using Thunderbird since 2003 and never had any problems. Now I'm panicking!

Not a huge problem, but VERY FRUSTRATING! After years of reliable performance, my personalized incoming mail notification sound (wav format) suddenly stopped playing. The 'test' function in settings works fine, but NOTHING happens when actually downloading messages. I've tried EVERY possible FIX, but NO LUCK. Any suggestions? Thanks

I have 1 computer that shows bars at the top and left side that I like. The one at the top shows Get messages, Delete, Reply, Reply All, and a few more items. The one on the left side shows icons that are for Mail, Address Book, Calendar, Tasks, and Chat. I have another computer that doesn't have those bars. I have attached a screen shot from that computer. Both are running T'bird 140.4.0esr (64-bit) and both are Win 11 machines. I've tried everything I can see to get the 2 bars to appear on the 2nd computer. I hope someone can tell me how to get them to show up. Thanks, Mike

I'm going absolutely nuts because I can't sort my folders. I've tried everything that came up in search to no avail.

I'm seeing that "Reset Folder Order" may not work with newer versions. I'm running version 144.0.1 (64-bit)

Is there any way to get it done?

Thanks a ton in advance.

Bob

I use Thunderbird for my emails on a Windows-Desktop. I still run Windows 10 as the computer is too old to upgrade to Windows 11 and I have signed up for the extended Maintenance.

In Thunderbird I have set up filters to organize my mail. When I wanted to change one of my filters a few days ago, I was not able to do so, as my Menu in Thunderbird doesn't show the ->Extra Option any longer. My Thunderbird-Version is up to date (140.4.0esr (32-Bit))

Any idea, how I can access my filters and maintain them again?

Thanks for your thoughts and your support

I recently transferred my Thunderbird email to a new Windows 11 laptop. Everything is ok, except the font size in received emails can best be described as very tiny. I've tried everything to increase the font size, but nothing helps. My screen has a resolution of 2880x 1880 Any help would be much appreciated. Thanks.

How do I disable the donation webpage that opens (in Thunderbird) automatically?

A common suggestion is to disable the start page: https://support.mozilla.org/en-US/questions/1226585 https://support.mozilla.org/en-US/questions/1520014 https://support.mozilla.org/en-US/questions/1515838 https://support.mozilla.org/en-US/questions/1507571 That option is already unchecked.

Some seem to be suggesting that this page opens when an update happens: https://support.mozilla.org/en-US/questions/1512477 There was no update installed lately.

My folders are no longer in alphabetical order. Yesterday when I signed off for the day, everything was per usual without any issues. This morning when I logged in, I noticed I had one random folder out of order. I restarted the program and when it reopened, the top 250 or so folders were all out of order.

I have restarted a few times, confirmed I am using the latest version (144.0.1), tried repairing the main folder (they are all subfolders), tried clearing cache, tried the "reset folder order" option, compacted the folder, literally everything I could find, with no success.

I use Thunderbird for work and have a folder for each project, I haven't counted every single one, but it is realistically over 1000 folders in total, yet only the top 250 (starting at zero, goes back to normal at the letter D) are affected. It would take far too long to manually correct/re-sort each affected folder, especially when I'm not confident it won't happen again.

I attached a couple of reference photos, but don't want to risk disclosing sensitive information, so hopefully they are clear enough to see the issue.

I am a newer Thunderbird user (a little over a year) and have never had this issue before. Does anyone have any other ideas on possible solutions that I could try?

(also, I have the Thunderbird installed on a few other devices connected to the same account and verified those are normal, it's only my main PC that is affected at the moment)