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Since updating Thunderbird 64 bit to v147.0.2, then to v148.0 (1st March 2026, just now), requesting the display of 'Unified Folders' (in Folder Modes) does not populate the unified Inbox with messages from any of my eight registered email inbox sources. The individual inboxes with their contents can be displayed below, but not in the unified Inbox.

Since being introduced several versions ago, I have found this feature very useful when checking my various received emails, and it is frustrating to be without it.

Can anyone suggest what I may or may not be doing to get this feature to work any more? I have been all through Settings, but cannot find anything relevant to this problem.

Cheers, Sam

Okay FIREFOX, update 2/29/2026

1) making complaints to this browser is a nightmare, you guys need to actually do something about making it easier to contact actual support.

2) Firstly, this latest UI update is literally a scam. If you're going to make such a change after years of the same UI being around, users should be well aware of that before the update rolls in.

Secondly, this menu UI should have been an opt-in/out service, NOT DEFAULT. Users should have the option to not use a feature that is actively hostile to a MOBILE experience. That means less button pushing required to speedily access saved content. The current way this menu pops up puts nonsense on top before the actually important parts, namely bookmarks access.

3) bookmarks (specifically CREATING BOOKMARKS). While normal bookmarks access looks the same, creating them is a monster in this app.

This newest iteration sucks, to put it frankly. Where before, the process was simply running down the list to choose the right folder (all those folders & subfolders were already extended), now it requires us to extend and extend and extend and extend. In what world did you guys think this was useful for a mobile phone? Mobile does not lend itself to multiple presses, that's by design.

You guys are making this app look more and more like desktop, and that's a bad design and worse feature for mobile experiences.

Please either update this UI to allow for the legacy design (opt-in/out), or change it back entirely. Right now this app is trudging downwards to an experience people do not want to use.

Attached are screenshots of the current 3dot menu drop-down and the creation/editing of bookmarks. Too much noise for what was actually useful design on the legacy UI.

Within Tool Settings create an option to choose one of the current six choices to become the default view. Currently "General" is the only default view upon entering Tools,Settings. As is with me I suspect the most revisited choice within Tools, Settings is "Privacy & Security". Would be immensely pleasing if I could select "Privacy & Security" as default view when entering Tools,Settings .

Issue

Thunderbird fails to wrap long lines of HTML-formatted text that is wrapped in a <pre> tag. This behavior is consistent in both the email viewer when viewing received emails, as well as in the email composer when writing an email containing preformatted text.

What I tried

1. Make all settings of config editor that contain the word wrap as true 2. make a userContent.css stylesheet within the chrome directory within the profile directory.

Question

How do I post the offending HTML code (and the CSS file I tried) on this forum?

How do I force Thunderbird to wrap preformatted text?

I've been using color settings in userChrome.css to set the colors for the threads and folder panes... I obtained these settings from a discussion in the Thunderbird Beta mailing list, back in 2023. Here are my current settings:

root {

 /* Force BG in unthemed folder */
 --foldertree-background: #A99B92 !important;
 /* Force BG in threads */
 --tree-view-bg: #A99B92 !important;
 /* Force black text in threads */
 --tree-view-color: #000 !important;

} /* Position Menu Bar above Unified Toolbar */

1. toolbar-menubar { order: -1 !important;}

However, after the most recent beta update, the tree-view settings are no longer working, and I'm stuck once again with the ghastly Bright White background... see the attached image; note that the foldertree setting is still working though...

What do I need to do, to get this code working again? or is this a bug in the current beta?

hi, spellchecking works fine when using Firefox in Linux, but not in Windows 11. For instance, I can enter comments and replies to magazine articles while using Linux and they're spellchecked as I go by highlighting misspelled words etc, but if I'm in Windows 11 and on the same comments section, although my Firefox settings are the same the spellcheck doesn't happen. Can anyone please tell me what's up with that?

Missing divider iin email list There is no place for the message body. Clicking on a message does nothing. Double clicking on a message opens a new tab with the message body,

I want to be able to permanently delete (equivalent of Shift-Delete) emails using a filter. Currently I can't do that. Selecting the delete option in a filter just moves the email to the trash. That means I have to handle the email twice in order to get rid of it.

Other email clients offer this feature. Why doesn't Thunderbird.

I manage 8 emails accounts for the dfferent projects - I collapse all the account folders when I close down T/B. When I reload T/B all the email account folders all open up. Is there a setting to prevent this?

Good morning all.

I was wondering if someone could assist me in standardizing email signatures when sending a new email, and replying to an email. Let me elaborate a little bit...

When I compose a new email, my signature comes out like what you see in the `composing.jpg` attachment.

When I reply to an email, my signature comes out like what you see in the `replies.jpg` attachment.

I appreciate any assistance someone can provide, and guide me to the best way of standardizing these bad boys.

Have a great day!

I need predictability where I can find it. Thunderbird opens how I left it, so I never know what's going to appear when I start it the next day. Isn't there some setting so that it always opens showing all 3 panes, regardless of my laziness at exit? It would also help with my autohotkey script if it knew what to expect. I suspect the lack of answers in my search suggests there is no such setting. How about a command line argument?

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?

Why does Thunderbird keep adding the "--" to messages. Moved from Outlook to Thunderbird and every new message includes "--" (circled in the included picture).

Why is it doing this?

A fair number of folders in my primary email address's inbox have been out of sorted order for at least several months.

Most of them are folders I access quite often; they now appear AFTER what used to be the last folder ("Zoom").

If this is a "feature," I suggest moving the highest activity folders to the FRONT of the inbox rather than to the BACK.

HOW DO I RE-SORT MY INBOX FOLDERS?

Thank you.

please explain the explenation at https://support.mozilla.org/en-US/kb/appearance-panel-layout-message-list-card-view-tab#w_card-view

What 2 rows / 3 rows?

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!

Hi Folks,

I would like to see my TB inbox to sort by date. I tried to do that by - Clicking on Message List Display Options at upper right - Selecting Sort by - Date But the messages are not in date order regardless of whether I select Ascending or Descending.

For example recent emails displayed in this order: 1/2/2026 1/1/2026 1/3/2026 (Date not displayed because it's today) 12/24/2026 1/3/2026 (Date not displayed because it's today) I'm using - PC with Windows 11 - Thunderbird release 146.01 (64 bit) which at least now is the latest release.

I welcome and appreciate any suggestions. Thanks, Marc

I'm new to Thunderbird and am having a problem when printing emails. The page to be printed, when shown on the initial screen as well as when actually printed, starts with a long list of technical computer-related data which, in the case of new Inbox emails, takes up about 1 1/3 at the outset of the printed pages, even if the email message itself is very brief. Even when I click off "print using system dialog" at the bottom of the Print menu, that technical data (though no longer shown on the initial screen) is still included when printed.

I can't find a solution in the online help files.

Thanks for your help in trying to resolve this,

John