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I changed my signature file, which had my name, and now get "?xml version="1.0" encoding="UTF-8" standalone="yes"?"[etc.] How do I revise the file to have my name, telephone number, and email address? Thank you.

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.

Whenever i send a message , it is saved to the 'inbox' previously it would be saved "sent mail". I have verified that TB is configured to save to sent mail but the msg is saved anyway to inbox.

Can some one explain how to get back to saving sent messages to sent mail folder.

In all honesty I find it frustrating to keep moving msgs manually.

I have TB version 140.11.0esr (64-bit) running on Win 10. I have multiple accounts and each is set to check for new messages every 10 minutes (nothing else is ticked under "Server Settings). Everything is ticked under "When new message arrives" (and default sound is used).

When new messages were available to download, TB used to play alert sound (and I would know to download new messages) but now TB is sounding (the new messages) alert every time it checks for new messages even if there are NO new messages to download! How do I revert to the alert ONLY being sounded when there ARE new messages to download?

I find 'threading' useless and confusing. I want to turn it off for every message, everywhere. But the drop down menus with items about 'threading' seem locked. I cannot uncheck anything. Not just that the checks return when I re-open Thunderbird, but also the checks don't respond to keyboard input to disappear.

How can I get rid of this horrible attempt the software is making to think for me? It always gets things wrong.

So I have a list of folders some of which are the default folders some are custom created.

When I try to re-order these it is very hit or miss: I select a folder, drag it to where I want it to go, wait for the blue placement line to appear and it may or may not re-locate. Or I simply can't move the folder I want to move and so I move folders around it in order to achieve the layout I want.

It is as if success depends on whether Thunderbird is in the mood for a particular move to happen and I find it really frustrating. It should or shouldn't work, it shouldn't be that it works sometimes.

What is going on with this?

Hello, I have a Thunderbird shortcut on my desktop.

When I try to move the icon to the taskbar, it doesn't appear.

I'm running Windows 10 on a new PC (ASUS GALAXY 5 PRO). Thanks in advance.

As the topic says, the message list turned from the usual dark-mode look, to a full black background after updating to 151.0.

Was this an intentional change? How can I revert it?

Just what it says in the summary. I went to settings to check/change something, and found this new (I think) message in colour at the top of the page. I have no idea what it means, as I am not part of any organization. The statement is a link, and when I click on it, it takes me to the page shown in the image What if anything, does this mean? Do I need to do anything about it?.

I can't turn off 'threading' of messages. I hate that feature. I'll do my own damn 'threading'. Now the 'search' function is useless. Help me turn off 'threading' I run Thunderbird which I like, on my HP Windows 11 laptop.

"Threading" cannot be 'unchecked' in the dropdown menu.

Been using outlook since 2000, I am tyrin to cut the umbilial cord to outlook as it is craper each year that passes.

Can i have more than 1 sig as i use maybe 10 different sigs for different reasons?

I see a use file do i get to choose a differt file when inserting sig or am i stuck with one and have to manualy change file or copy from somewhere else.

Once i get Thinder runnin i wil be happy to support on a monthly basis but i need to se if ti will suffice.

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,

This would have been a reply to https://support.mozilla.org/en-US/questions/1390397?utm_source=chatgpt.com which is one of the top google results for "Thunderbird make font fixed length addon"

Some html text is hard to read, I would like a button, to make it all one more readable font. (font override toggle button to variable lenth font) and a button to make it a fixed length font (font override toggle button to fixed lenth font) Maybe a button to also strip formatting like bold/italic/coloring etc..

The solution

Preferences > General > Language & Appearance > Fonts & Colors > Default font > Advanced > Font Control > Use fixed width font for plain text

Which is too deep into the setting to casually flip for one message and then bring back to normal. I don't want this forever, just when there's one hard to read email.

I don't use Archives or Templates. There is no folder on my servers that correspond to these and they are not subscribed in my IMAP settings.

They don't appear in the per-account view. But they somehow appear in the unified folder view.

I am not able to figure out how to make them disappear.

Help.

Threading - why does it keep coming back? I have just realised it's back again on my Thunderbird and I never knowingly turned it back on.

Why does Mozilla keep trying to force it on users?

This has been an annoyance for users for several years now and the message has still not got through it would seem.

For an open and user-facing organisation, this is strange behaviour that I just do not comprehend. Include it if you want, but make it optional and easily so.

I know this is only the community forum, not Mozilla, but one would think that a wise organisation would keep an eye on what their customers were saying & feeling.

Hi,

I have been using Thunderbird as my preferred email client since around 2004 on Linux, macOS and Windows.

I am current running Thunderbird 150.0.2 64-bit on macOS Tahoe 26.5 ( Intel ).

When I attempt to create a new 'Folder' or 'Sub Folder' on either an iMAP account or, more importantly, my 'Local Folder' the displayed dialogue box is sized incorrectly and I am unable to complete the action.

Specifically I can type into the 'Name' text box and see the 'Create as a subfolder of" drop down dialogue but the two buttons below are barely visible and I cannot select either with my mouse. Nor can I resize the dialogue box itself [ make larger ] to enable to be select either button.

I can use the <TAB> key to cycle thorough the various items and the <RETURN> key to select an option.

I have attached a sample image of the issue.

Thanks.