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Sometimes while I am in an other program, there pops up at the right side a message from Thunderbird that there has come an email. I don't want that but there is no way I can control this.

I am struggling trying to get a consistent format in Thunderbird. First of all let me say that I am happy with the default use of paragraph style and if I want to have occasional single spacing I can use shift-enter instead of enter. Most queries on formatting seem to be about getting single spacing all the time. That is not my issue. That means that if I compose an email from scratch everything is just the way I want it, using the default settings. The problem arises when I reply to an email. The settings then seem to be ignored. For instance the line spacing can be fixed to single spacing whether I select paragraph or body text and no matter what I do I can't get it to follow the default behaviour. Also, I noticed that the font goes to "sans-serifArial" instead of the usual "Variable Width". In fact if I try to select "Variable Width" in the Format menu it is just ignored. How do I get the default composition settings when I reply to an incoming email?

With some of the messages I receive and with film sites such as Netflix and HBO Max, the screen becomes too large to access the control column on the right, a necessary manuever as the scroll arrow has suddenly lost its ability to scroll when that column is no longer seen. What do I need to do to rectify this?

How do I enable the display of the number of selected feeds? I have all toolbars enabled, but as I select feeds in the navigation panel, I don't see the changing number anywhere. The context menu of selected feeds only has the following items:

1. Options
2. Open in New Tab
3. Open in New Window
4. Delete
5. Move To >
6. Copy To >
7. Compact
8. Mark Folder as Read

Hi! I'm trying to set Thunderbird as the operating system default under Win 11. I tried to follow Mozilla's instructions: 1. Open the Settings application by pressing and releasing the Windows Start button, then clicking the gear icon. 2. Click the Apps icon, then click Default Apps in the list. 3. Click the icon under the heading Email to show your choices. 4. Select Thunderbird. The trouble is that at n. 3 there is no choice. There is only 'OutlookAccounts' and this item cannot be deleted or replaced. Can you help? All the best, Robifiori

The recommended methods, changing to this in the registry :

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Mozilla\Firefox\Certificates] "ImportEnterpriseRoots"=dword:00000000

Reverts back to 00000001

Put this policies.json and did nothing: {

 "policies": {
   "Certificates": {
     "ImportEnterpriseRoots": false
   }
 }

} What am I missing or what's changed?

My specific need at the moment is to add another search engine option in about:preferences#search

Thanks.

When I launch the browser, can I not preload tabs that I have not used yet in this session, but which are open from the previous one? This is slowing down my weak PC. I did not find anything about this either on the Internet or in the reference book. Thanks in advance for your answer

Hello,

I am using the latest stable version of Thunderbird on Windows to read FTN (Fidonet) echo conferences that are relayed via NNTP (specifically, through Eternal September).

While the message bodies are usually readable, I have persistent issues with:

Unreadable or corrupted Subject headers

Author names displayed with wrong characters or encoding artifacts

Some headers showing as raw MIME encoding (e.g., =?KOI8-R?B?...) or complete gibberish

I suspect the issue is related to legacy Cyrillic encodings such as KOI8-R or CP866, which are still common in FTN systems. It seems Thunderbird does not properly decode these in NNTP headers.

I’ve attached a screenshot illustrating the problem.

My questions:

Is there any way to force Thunderbird to decode NNTP headers using a specific charset (like KOI8-R)?

Are there any config settings, hidden preferences (about:config), or recommended add-ons to fix this behavior?

Is there an open bug or known limitation related to non-UTF8 header decoding in NNTP messages?

I do not face this issue when reading standard UTF-8 NNTP groups or emails — only FTN-derived groups.

Thank you in advance for any advice. I’m happy to help with diagnostics or testing.

Best regards, Vladislav

Hello,

I blocked the pop-up windows from settings but it doesn’t work. Some websites keep spamming these windows and its annoying. Is that function limited? Is it just an option that doesn’t work?

I tried to add the roboform browser extension twice and I get the following message (the second time was from the Roboform homepage):

Installation aborted because the add-on appears to be corrupt. Preview of RoboForm Password Manager RoboForm Password Manager by Siber Systems Recommended

RoboForm, the #1 ranked Password Manager makes your life easier by remembering passwords and logging you into websites automatically Add to Firefox

This just started happening a few days ago, once I click into an email in the unified inbox it disappears from the inbox. Prior to that the email would remain in the unified inbox showing as read. Now the email will still be in the individual email address inbox, just not in the unified inbox. How do I change this back? I'm running three email addresses through thunderbird.

I'm currently on Firefox Nightly on desktop running the latest version. I wanted to know how to turn my Firefox Tools icons back from just having icons at the bottom to the list of icons with their names like before. I've attached both images, one from another computer running an older version of nightly which is what I want to return back to.

If there isn't a way to change it back, I would like to suggest this as an option to be able to easily turn back to a list type.

bold text I did something that made my FoxFire window cover 1/3 of the total window on my MacBook Air. It used to cover everything except the bottom and top bar. How do I get it back?

As the title says, firefox keeps reenabling delete browser history when firefox closes on its own. After an update yesterday it seems to have reenabled it AGAIN. Back in May near the end of it it also reenabled itself and deleted years of firefox history out of nowhere and I never knew it did so until the next morning when I went to go to a specific part of a site I frequent only to find when typing out the keywords to it, didn't exist.

Found it reenabled itself on its own. Disabled that, and got some semblance of my history remembered again into the system. Made a backup copy of history to some degree into a copy of the places.sqlite file. Yesterday firefox updated again. Closed it last night when i shut off my PC to go to bed and this morning when I opened firefox, I find all my history is gone AGAIN. See delete history when firefox closes is reenabled once more on its own without my permission barely 3 weeks later. I then try to input the backup places.sqlite i made a few weeks ago as well and it gets overwritten by an empty one after I input it back in and open firefox.

I've tried searching for why and how this keeps happening. But every time you search anything on this topic its nothing BUT how to ENABLE the setting, nothing about it auto reenabling and how to stop it or what could be causing it. Web searches are legitimately 0% useful because its just nothing but one sided search results repeating the same thing ad nauseam.

Hi. How do i change my settings so that I don't need to press "download complete message"? Seems like a 1990s choice to default to not load messages directly if you ask me.

I noticed on both Android 15 and 16 that the FF app shows 'Ask Bing' (see attachment) when you invoke the copy/select all/search etc. popup. .

I have not found a way to remove this. Any ideas?