Thunderbird Community Forum

I use Thunderbird 140.11.1esr with Ubuntu 24.04. I also use LibreOffice 26.2.

When using LibreOffice, if I want to delete a number of contiguous characters, I put the cursor at the start of the characters I want to delete, press the delete key and hold it. Holding down the delete key means that delete works its way through all the characters I want to delete.

When using Thunderbird, if I want to delete a number of emails, pressing down and holding the delete key doesn't result in the deletion of a number of emails. Instead, I have to keep pressing delete again and again.

Is there some setting in Thunderbird that I can change that will result in delete automatically working its way through all the emails I want to delete?

Thanks,

Leslie

Hallo, ich habe vorgestern ein neues Win11 aufgesetzt und dann die neueste Version von Thunderbird installiert. Mir ist jetzt aufgefallen das sich die E-Mails nur mit einem Doppelklick öffnen lassen und das dafür ein neues Fenster aufgeht. Früher waren die Mails mit einem Klick zu öffnen und der Inhalt wurde auch direkt unter der Mail angezeigt . In den Einstellung steht der Doppelklick nicht in der Auswahl sondern als einzige Möglichkeit. Gibt es da irgendeine Möglichkeit um das anders einzustellen, einfacher Klick und direktes anzeigen ohne extra Fenster? MfG

Hello, the day before yesterday I set up a new Win11 and then installed the latest version of Thunderbird. I have now noticed that emails can only be opened with a double click and that this opens a new window. Previously, emails could be opened with a single click and the content was also displayed directly below the email. In the settings, double click is not in the selection but is the only option. Is there any way to set it differently, single click and direct display without an extra window? Best regards

Hello,

I have this problem. On only 1 PC from 5, with same mailboxes installed and same configurations, on one of the mailboxes, Thunderbird does not accept setting to "not read" the letter. I tried making time to read the letter and it worked for 10 min, and then again stopped. At final, no matter how it is set, when I push to read the message it always read it.

Tried repairing the folder, but doesn't work.

Any Ideas will be great.

Thank you

I am using Windows 11 with the latest Thunderbird 151.0.1. I have been trying to add color to the column title background in the message list using the userChrome.css with the following:

1. sizeCol {background-color: #dcfffc !important;}
2. recipientCol {background-color: #dcfffc !important;}
3. subjectCol {background-color: #dcfffc !important;}
4. dateCol {background-color: #dcfffc !important;}

1. spamCol {background-color: #dcfffc !important;}
2. fromCol { background-color: #dcfffc  !important;}
3. attachmentsCol { background-color: #dcfffc  !important;}

They work except the 'from', 'attachments' and 'spam' columns title backgrounds. Can anyone see what I am doing wrong? Or is there a way to color all column title backgrounds in one line? Thanks

My Thunderbird Inbox details included Date and Time for each incoming email but I have somehow stopped that - how do I reset it to display this information? Attached is a screen shot of the top of the display.

[I was sure I submitted this but I can't find it. Sorry if it's a dupe.} Thunderbird v. 151.0 (64-bit) Windows 10

When I reply to or forward a message, I get raw code like:

> ad that says: Mary gets us <https://click.ngpvan.com/

> k/132163625/623609951/778722144?refcode=LOC_EM_FR_2026.05.27_peltola-

> split_B1_F1_S1_C1_60DO90DC120DD_N-

> T0&nvep=ew0KICAiVGVuYW50VXJpIjogIm5ncHZhbjovL3Zhbi9OR1AvTkdQMTkvMS83MjcyMiIsDQogICJEaXN0cmlidXRpb25VbmlxdWVJZCI6ICJlYTIyODEwZS1kYzU5LWYxMTEtOGZjYi0wMDBkM2ExODkwNWMiLA0KICAiRW1haWxBZGRyZXNzIjogImhvb2V5Z29vQGdtYWlsLmNvbSINCn0%3D&hmac=FH6VuhfY9AcHmAdMj2RHECp0IpRhxQHb41JBnp34fM0=>

>

How can I get just the normal readable text quoted (Gmail-style)?

TIA

My trash folder deletes my emails after just 30 days. I want to keep my deleted emails in the trash folder for ever (or almost), but I can't a way to change the period for keeping the emails.

The oversized menu box cuts off the the "Save" key and I can't re-size the Message Filter/New Filter box nor can I slide it up for access to the button on the very bottom. Windows 10 Home, Version 22H2, Installed on 9/14/2021, OS Build 19045.6466.

I've tried a dozen fixes suggested by Duck AI and none had any effect on the Filter box. Here’s a concise list from Duck AI of every fix I tried:

   Hold Shift while opening the Filter menu (compact popup).
   Shorten long filter names (Tools > Message Filters).
   Change system UI scale (Windows Display scaling).
   Toggle toolbars / layout to reclaim space (View > Toolbars / Layout).
   Use Tools > Message Filters dialog (resizable) instead of the menu.
   Add userChrome.css rules (multiple variants) in profile/chrome/userChrome.css to force max-height, scrollbars, reduced font/padding:
       Generic menupopup rule (max-height: 420px, font-size: 11px).
       Targeted rule including .filter-menu-popup and #createFilterFromPopup (max-height: 300–520px, font-size: 10–11px).
       Final variant replacing values with 360px (no effect).
   Attempted diagnostics via screenshots and Developer Toolbox (Ctrl+Shift+I) — determined screenshots showed Filters dialog, not popup.
   Determined the "Create Filter From" list is likely a native Windows popup (userChrome.css cannot style).
   Workarounds proposed:
       Use the resizable Message Filters dialog to create filters manually.
       AutoHotkey script (Ctrl+Alt+F) to open New Filter and pre-fill From/To/Subject from the selected message (provided full script).

I had received several emails from an individual over the past few weeks. All emails displayed in the inbox (on my desktop computer) as they should. This afternoon suddenly all of these emails disappeared from the desktop inbox. The emails are still on the server and are and can be viewed in the inbox on my laptop but not on my desktop. If I use the quick filter function in the desktop the emails are there but not in the inbox. I assume some sort of filter accidentally was activated (I did not attempt any filter changes) but I can't find how to remove this filter function so the emails again appear in the inbox as they should. Please provide detailed instructions how to get these emails to reappear in the desktop inbox.

Hello,

I am on Thunderbird 150.0.2 for Windows.

I am really suffering here. I need to change the font weight of unread messages. In a non-threaded list.

The default weight I get with my preferred font (Trebuchet MS) is not bold. It is BLACK. When I say BLACK, I mean ultra bold, display font, heading weight. Heavier than the boldest font that even exists in the font family. Thunderbird is creating this ultra mega black font by taking the bold font variant and applying a faux bold effect to it. The result is that the text is so heavy that it takes up twice as much horizontal space as the ordinary bold font variant. This becomes a usability issue because it's not possible to see the date, sender, and subject at the same time.

I have struggled and strived with userchrome.css. Spent hours combing through forums here and elsewhere. I've already enabled the mystery setting in the config editor. I put userchrome.css where it is supposed to be.

I saw a blog post from Mozilla that says "userchrome.css is not supported". What is the actual meaning of this? That it has been actively blocked from working anymore, ever, for anyone? Or that users are taking risks if they create userchrome.css? Why can't developers speak plain language? "Not supported" could mean many things.

When I go to the Style Editor, userchrome.css does not exist there. Which leads me to believe that user customizations are absolutely deprecated and we are not permitted to use userchrome.css.

I tried editing some of the rules in the Style Editor, but could not determine any way of actually storing the changes. When I click Save, I get a dialog where I can **EXPORT** the file. But I can't seem to actually save the changes, because CSS files do not appear to exist in the installation directory. It must be compiled into some library.

This is extremely unsatisfying and super frustrating. Just getting straight answers to things is super difficult, nothing stays the same for more than a couple months, and up to date information either does not exist or is not found by any search engine.

So, please help. I just need to change one setting, the font weight of unread messages. Since Thunderbird is allegedly open source, I thought I would have some ability to make such changes. But the Style Editor doesn't seem to actually be an editor, but merely a read-only interface to precompiled rules? If I wanted to change the font weight of unread messages, would I be forced to compile my own version of Thunderbird? I'm not competent to do that, and it would probably either prevent updates, or the updates would break my changes.

Please help, I am super desperate. I need to see the date, sender, and subject all at the same time. That doesn't seem like an unreasonable ask.

I would gladly pay for an email client that gives me control over my data *and* allows me to control the UI, but apparently that doesn't exist.

Hello (this might fit better in "performance & connectivity?): Tbird 140.10.1 & .2 esr. W11p laptop v23. As of tonite (15may26), after update from 140.10.1 to .2, in a message, the "buttons" for a web link no longer appear, in the msg body. Instead the link is shown in full. How can I fix that?

Here's an example (others are longer) from our local rag "Press Democrat."

Header Logo <https://enews.nl.pressdemocrat.com/q/ qH1rRJrBKJ0Xyf9LNp1wEwHDTif8o4tQ5y1ZcOJcHNsZGRhQGdtYWlsLmNvbcOIyz_GZ83be6bPLq- ZFHTNYUc43xg>

I also closed & re-opened tbird, did NOT reboot laptop. Problem remains.

Thank you.

How do I change Thunderbird's icon back to the older version? The new version looks a lot like Signal's icon. When I have a taskbar full of icons, I have to look carefully to make sure I'm selecting the correct icon for the app I want to switch to. It's annoying. Thanks

Earlier in the year I installed Thunderbird onto a new PC having previously used an older version on an older PC. When visiting a web site (and clicking on an email hyperlink there) my previous version used to automatically launch Thunderbird but the new version doesn't do that any more (i.e. clicking email hyperlinks doesn't do anything at all)

I'm running on Windows 10 and using Thunderbird version 150.0.2. I this likely to be due to some setting in Thunderbird? Or is it maybe something I need to configure in Windows?

I just want Thunderbird to show remote images automatically without me clicking the button. Just show all images. The setting you ask me to change does not exist.