Thunderbird Community Forum

All of a sudden my emails are permanently staying in bold in my folders, in Settings >Reading & Display Ive tried changing the 'Automatically mark messages as read radio buttons and quit etc and the same issue is happening, please advise

Hello,

I'm looking to customize the colour of the message header row (the part highlighted in red; with a black background as shown in the screenshot) to #202020, to match the rest of the elements of the view. While I've successfully managed to customize other elements (code below), I need help with identifying what to specify for the message header row.

.tree-table { background-color: #202020 !important; }

treechildren { background-color: #202020 !important; }

#messagePane { background-color: #202020 !important; }

#messageHeader { background-color: #202020 !important; }

#msgHeaderView { background-color: #202020 !important; }

Thanks and cheers.

Prelude: Monitor specs matter: Samsung Odyssey G93SC [Monitor] 1194.7 × 365 × 180.8 mm (approx. 47 × 14.4 × 7.1 inches) on a NVIDIA GeForce RTX 5080 [Display adapter] Display is 5120 x 1440 (recommended) Scale = 100% ISSUE: Fonts in Thunderbird size varies from readable to very hard to read.

Screencap below with filename [font-size-R4--181158.jpg] on your device at 100%, I hope, will show what I see.

Some Fonts in different Thunderbird 'panes' are unreadable without zooming in. The {body} of a reply is very small (see font-size-body--Rev3-07-19-2026_01.jpg below) The image will show the cursor at top left of Body.

I did search here but nothing of this nature it. So here is my question:

QUESTION: Is there a way to edit a config file or the likes to set fonts to be responsive (like a web site is same in any size screen and compensates for size?

Thanks for the read,

~r

At some point recently, Thunderbird started ignoring the page range I specify in the print dialog box. I regularly have documents that are 4-5 pages, however I only need the first page printed. So in the print dialog, I set it to double sided printing, and to print only pages 1-2. In the past, it would only print a single (double sided) page...recently, it started printing all of the pages, and ignoring the setting I provided. Any help would be appreciated!

Hi,

I use AltSnap and its snap feature a lot because I have multiple 40" TVs as monitors.

That means I often deal with thunderbird floating windows rather than maximized, and I often resize it.

And I notice that my message list is always getting too small !

I realized this is because when you resize the thunderbird window vertically, the preview pane stays a constant size, but it is the message list that resizes.

Over time the message list gets squished out and not even one message is visible.

I think if the message list remained of a constant size during vertical resize and it was the preview pane that got resized along with the window, it would prevent that and the message list would always be, the size that you last set it.

Hello,

I *can* resize the folder pane in the first/main folder tab, but, I *can not* resize the folder pane in subsequent folder tabs I create using "open in new tab". 

This occurs using any layout (Classic, wide, vertical view). In the first tab I get the double-headed arrow to resize the folder pane, but in subsequent folder tabs I don't get it.

When I open a  folder in a new tab, the folder pane is the same width as the parent tab, but, I can't adjust it.

I'm using Thunderbird 152.0.1, but, this has been going on for a long time from what I can remember.

I've tried a number of suggested things to fix this: - Deleted xulstore.json - Cleared Startup Cache. - restarted in Troubleshoot mode (and I get the same issue there). - Switched layout views - Toggled folder modes - Adjusted interface density. - Toggled hardware acceleration. - Deleted the UI Cache Folder (shader-cache)

Nothing worked.

Please help me with this!

Thank you, Jim

I have attached a screenshot of the retention settings for the Gmail All Mail folder. This folder contains emails that have a date nine years ago. Can you tell me if I did something wrong in the retention settings?

I thought earlier today it was using the retention settings but I just checked and it is not.

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Hi,

I use Thunderbird 152.0.1 (64-Bit) and I only have three items in the files & attachment section of general settings (JPG, PDF, Excel). How can I add more items, for other file types? Is there an easy way to do this or does this mean I have to deep dive into the configuration of Thunderbird?

And would it be possible to add an item to declare that website links in e-mails have to be opened with Firefox in private mode, which is not the standard browser on my machine?

Thx!

I transferred data to a new computer. I have two emails, when I click 'New Message' one email has a line below the subject line that allows me to set Paragraph, Variable width, font color, Font size Bold, etc. the other does not have the line where do I turn it on at?

I am experiencing an issue where clicking links inside Thunderbird emails forces Microsoft Edge to launch a completely brand new window with a blank profile (no extensions, default settings). It does not open as a new tab in my active window.

My environment details:

• OS: Windows 11 (Version 25H2) • Default Browser: Microsoft Edge (Only one profile exists under edge://settings/profiles, no Workspaces used). • Thunderbird version: Latest stable release.

When Thunderbird passes the HTTP/HTTPS link to Windows, Edge seems to ignore the standard "Default" user data directory profile and launches a temporary or guest-like profile container instead.

Is this a known bug in how Thunderbird handles external URI handlers, or is it an Edge registry/default app assignment issue? Any help or workaround config settings would be appreciated. Thank you!

I already have View > Sort by > Date is selected, View > Sort by > Descending selected, and thread sorting set in settings. See screenshots. Threads sorting so newest is at the bottom, they should be at the top. General emails are sorting properly, newest at the top.

On upgrade to 152.0, a pop-up asked for options I have not seen before. I cannot find info about what the net.thunderbird option is, nor why I would or would not want to click it? Any help out there?

Thanks!

How do I add the thunderbird email app into my firefox links area? I can load gmail into it but I can not find the www stream to use to get to thunderbird.

Thanks.

I use Thunderbird to access my Gmail accounts. Gmail is confirgured for IMAP and I am able to access all of my E-mail accounts ... so that is good.

However, I do have one issue: When I delete an E-mail in Thunderbird, it moves to the TRASH folder and I empty that daily. However, when I go to Gmail, I can see that they are STILL in "All Mail". If I access All Mail in Thunderbird and delete messages, they reappear.

The only way I am able to get rid of them for good is to access them in Gmail. If I don;t, the All MAil folders grow like crazy and messages thgat I deleted are still there .. some were several years old.

Question: Is there a way to set up Thunderbird so that when an E-mail is deleted in Thunderbird, that it takes it out of "All Mail"?

HI all

I've just bought a new 24" iMac desktop and it's running Tahoe 26.5.1. I'm using Thunderbird 152.0.1

Everything migrated fine from the old machine, but on the old machine a great many of my subfolders under Local Folders were disordered. Now, I've used 'reset folder order' to fix them, but within those subfolders, the next level of subfolders are disordered. Manually dragging and dropping makes it worse (didn't know it could get worse, but it has...) and when I took advice and looked for the 'Manually order folders' add-on, it says it's not compatible with my version so now I'm stuck. I have ongoing conversations with several hundred clients and cannot work if I cannot file and search email alphabetically, it's a disaster. I'd send a screenshot but the client names are confidential. Can anyone please help??? The top line of subfolders under Local Folders are fine, it's the folders within those subfolders that aren't. Thanks in advance!