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Thunderbird Calendar cannot select custom sound for reminder. The browse button to select custom sound does not work.

Same issue was brought up by someone else 3 years ago here: https://support.mozilla.org/bm/questions/1414126

The provided solution which worked for the user (on TB 102):

Settings/General, Config. editor, paste mail.biff.play_sound.url in the search, then click the Reset icon for that preference, then see if the Browse button works.

This no longer works on TB 152.01, so cant use longer duration custom sound. The default sound is a micro-second blip that is easy to miss.

Hope to find solution. Thanks!

Hello. I would like to know if there any plans for Firefox Focus to have a complete dark mide option (ie force websites to display a dark background)? I think it might be a bit easier on the eyes and possibly battery in certain situations.

Thanks

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!

I have been using Thunderbird since over 7years on pop. I am facing issue since few days. I Have my personal mail linked to my website hosted on a unix server. I use thunderbird mails latest version. All sent mails were earlier visible in Sent folder. But now since a week only yesterday's mails are visible. All previous mails are in a subfolder by year 2026 in Archive. This makes it difficult to search sent emails. While this is not an issue for the Inbox where I can see emails from 2017.

Please suggest how can I restore all my previously sent emails since always, to my Sent folder.

As in the subject, my computer has sound everywhere else but, despite 'play a sound' still showing as ticked in general settings, no sound happens when an e-mail arrives. And, in general settings for 'when a new message' arrives, I can hit the Play Button there and the sound happens. How do I fix this?

Firefox 151.0.1 64 bit for Arch Linux I am trying to create a desktop app from a website - the ai is saying if there is no + sign in the url box then try More Tools -> Create Shortcut but there is no Create shortcut there. So how to create a desktop app from a website?

I want to collapse all folders in my email account.

I have a lot of them, and I don't want to close/expand them all individually. I want to quickly close all or expand all

Is there a button to do that ?

I am using Kubuntu 26.04 and I am using the monthly stable channel version of the Thunderbird Snap. In KDE system settings, the default email client is set to Thunderbird. Upon every startup of Thunderbird, it ask if I want to set it as the default client for email, newsgroups, feeds and calendar and when I click yes and close Thunderbird and reopen it it does the same thing, over and over. Otherwise the email program operates just fine otherwise. My email accounts are all setup properly and functioning and working and it downloads email just fine. It just has that annoying popup upon every startup. I've included two images to show what I mean. I like the Snap version and prefer that container format. I would like someone who is smarter than me to file a bug on my behalf.

I use Thunderbird on dark mode, so by default, unformatted text (where I haven't explicitly set text color) appears as white text on a black background in my compose window. The same unformatted text, when sent to someone viewing it in light mode, appears as black on white to them and remains readable. When I use white text in my compose window, it looks identical to me, but remains white when sent and is thus unreadable white-on-white to those using light mode. Is there something in the composition window that indicates whether I'm typing with formatted or unformatted text? (No, the color selector tool does not do this. When typing unformatted text, it displays the last selected colors, regardless of whether they are being used.)

If there's no way to distinguish this, could someone please add a UI element for it?

When I compose a next message, anything I type exist the current window size (on the right) were disappear, until I press CTRL- to zoom out the scene. But when the same issue happened when I kept on typing. I.E. the content I was typing did not move to the next line. So that I could see what I was typing.

(example: the top line of this message, if my window is too big, I can only see upto 'the cur", then "rent window..." is out of the picture. I should move "current window.." to the next line). This is very frustrating when typing a long email. The only option I am using is the manually pressing 'Enter' for the new line.

When I delete a message from the message list (not the first one), the next email selected is the first one in the list. This is a change in behavior - it used to the the one following the position of the deleted the email would be selected.

Issue: When Firefox starts after a system reboot, it starts on the incorrect desktop. This seems to be off by one; that is, I have Firefox assigned to Desktop 3 (using the Dock icon's Options menu). Under normal operation, it starts on Desktop 3, but after a reboot, it seems to start on (more recently) Desktop 2 or (earlier) Desktop 4. Unsure about what causes it to prefer 2 vs. 4.

This seems to happen after I've shut down (quit Firefox normally, shut down without reopening windows on login, power goes off, power on, log in, then click on the Firefox icon in the Dock) or after a system update (which reopens windows on login for me after rebooting and installing the update). It does not seem to happen after a Firefox update or after quitting Firefox normally and then restarting it from the Dock icon right away.

Pretty irritating, as I have major applications assigned to specific desktops, and Firefox is the only one that seems to forget which desktop it should be on.

Details:

Firefox 150.0.3 (aarch64):

• Settings > General > Startup > Open previous windows and tabs > TRUE (checked)

macos 26.5 (25F71) Tahoe:

• Settings > Desktop and Dock > Mission Control:
• ---> Automatically rearrange Spaces based on most recent use: FALSE
• ---> ...switch to a Space with open windows for that application: TRUE
• ---> Group windows by application: TRUE
• ---> Displays have separate Spaces: TRUE
• Dock > Firefox application icon > [Right Click] > Options > Assign To > This Desktop (i.e., Desktop 3)
• Apple Menu > Shutdown > Reopen windows when logging in: FALSE

MacBook Air M4 2025 24 GB RAM:

• No external displays connected

I used to paste a text selection (temporary clipboard) into the URL bar and it would replace the loaded text/url. Now, it inserts it to the existing content at the point of the cursor. Why does it do it now? Is this an option i have to disable or is it a bug?

This is on v151 now

A return/Enter command causes two line spacing. I have unchecked Use Paragraph Format in Global preferences. Shift Enter also causes a two line space/paragraph spacing.

When an email that is part of a thread is selected the delete button changes places with archive so I end up with a bunch of archives I don't want because I get a lot of mail and delete is my favorite key to spam.

Is there a way of changing this placement behavior or do I need to hack the source and if I do need to go hacking can someone point me in the direction of the file with this evil thing.

The new "Copy Link to Highlight" button shifted the "search with" option down, which I use regularly.

I'm not entirely sure what the new option does, but I would like to either disable it or shift it further down out of the way

Until recently, when I clicked on a link in Thunderbird, it was opened in Thunderbird. Now the link is opened on a wide-screen external monitor. I can't find the setting that was changed to make this difference.

I'm working with Thunderbird 152.0 on linux (Manjaro GNOME). I've been having this issue where sometimes while composing a reply, the quoted text of the email I'm replying to in the body of my current reply will be displayed as black on the dark background. It's very annoying when I need to look at specific text to refer to in my message.

Some more observations: - This is not a new issue, it's been happening for quite a while now, possibly years, but it's finally gotten to a point where I want to fix it. - It does not always happen. I suspect it's when the original message I'm replying to has been formatted in html first, whereas I prefer plain text replies.

I've attached an image of what it can look like on my end, as well as one where I select the text to show the contents.

Is there anything that can be done about it?