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I received a spam message this morning that had a "Disposition-Notification-To" (aka Read Receipt) line that had MY email address on it. I honestly don't know why a spammer would do this - but that's not the issue. I have Read Receipts disabled, but Thunderbird generated an email (to me) and sent it to my mail host. This seems like a bug. Even if the Read Receipt has my email address on it (making it mostly harmless), Thunderbird shouldn't have generated the message. Or am I missing something? Thanks.

I cannot find the menu item on my mobile device to sync my Firefox account. When I select "menu" it doesn't have that as an option; it only shows me other topics I have used Firefox to search.

My emails suddenly stopped coming in. Everything was working fine until now! When I try to get emails in thunderbird, I get the message that cannot access the server, or that the system has timed out. I am using Thunderbird for my charter email accounts. I am using Windows 10 on my PC. I checked all email settings in Thunderbird and they are correct. I went to the online email with Spectrum/Charter website, and it is all there.

I need help understanding why this suddenly happened. I am using my Outlook email for this forum since I can't receive my charter emails. My outlook email on same PC is working correctly. Any help would be appreciated! Thank youm

I've searched & waited past few years for an Extension to make the TOOLBAR FONTS larger, none found. Reason being many of us are using larger monitors and TV's and we're usually sitting or standing further away from the screen. Problem is the font size cannot be changed, they stay small and hard to read comfortably. __YES I've reset my operating systems font size, that does not work in Firefox TOOLBARS. __Changing the "firefox/addon/theme-font-size-changer" has been eliminated by Firefox. __Changing the "layout.css.devPixelsPerPx" to a larger number increases the whole TOOLBAR. I just want the FONT size larger. __(someone suggested) NO, I'm not going to setup 2 monitors.

Sure would like this issue fixed. In the pix below, it has been done.

I have all the location settings I can find on my Firefox browser, google, and device turned off, but the new firefox weather widget still had my hometown as the default location, which is is not the same location as my IP address. And when I went to buy a book online through Thriftbooks with a guest account the address line autofilled with addresses in my hometown. I do not have any addresses saved to autofill. Where is this information being stored and how do I get rid of it?? Is there something in about:config I can shut off or disable?

Thank you for your time and assistance.

Under Settings>Privacy/Security>Browsing Data there is no longer the option to Manage Cookies, despite the help section saying that is where to find it. There is no other place in all of Settings to find the list of cookies. There is only the ability to delete all cookies in History, which I have no desire to do. I edit the cookie list weekly, and it is only now, mid August 2026, under Firefox 153 on Win 10 that I no longer have access to them. How do I get it back?

I have created an account instance in account settings, and the "Test connection to server" says it is OK, but when I go to the mail tab the get messages button and New Message are grayed out an NO accounts are listed in the "folders" area. Not does it ever ask for my password to the SMTP server I have selected. I have an existing account with my own email service (Hover), and MUST connect to that. This is critical, as I need my e-mail to accomplish necessary activities.

After the last update I keep bein forcefully logged out of my firefox account. And when I manage to log in, my saved passwords are all gone! After restarting firefox I'm logged out again. What's going on?

I have no idea why Thunderbird stopped working for me and I can't seem to solve the problem - one day. I got a notification to re set my credentials - nothing since

Mail filters for custom headers like List-Unsubscribe, Authentication-Results or Received-SPF copying messages from IMAP accounts to Local Folders do not work on the Yahoo! IMAP account. For example:

filter1.jpg: name="_Inbox2: List-Unsubscribe <https" enabled="yes" type="17" action="Copy to folder" actionValue="mailbox://nobody@Local%20Folders/Inbox/_Inbox2" action="Stop execution" condition="OR (\"list-unsubscribe\",contains,<https)" (should copy messages from IMAP folders to _Inbox 2 on Local Folders)

filter2.jpg: name="Spam: Authentication-Results dkim=unknown | Received-SPF fail | X-Antivirus-Status Infected" enabled="yes" type="17" action="Copy to folder" actionValue="mailbox://nobody@Local%20Folders/Junk" action="Stop execution" condition="OR (\"authentication-results\",contains,dkim=unknown) OR (\"authentication-results\",contains,dkim=perm_fail) OR (\"authentication-results\",contains,dkim=none) OR (\"received-spf\",begins with,fail) OR (\"received-spf\",begins with,softfail) OR (\"received-spf\",begins with,none) OR (\"x-antivirus-status\",is,Infected)" (should copy messages from IMAP folders to _Inbox 2 on Local Folders)

But filter3.jpg for Subject works well: name="Inbox" enabled="yes" type="17" action="Copy to folder" actionValue="mailbox://nobody@Local%20Folders/Inbox" condition="OR (subject,doesn't contain,t[k\6iq69pd+}'cr)" (copies all remaining messages from IMAP folders to Inbox on Local Folders)

(the snippets above are fragments of the msgFilterRules.dat file)

Filters1 and 2 work well on other IMAP accouns, like for example wp.pl. So this is about Yahoo or something is corrupted. My question is, what wrong is here ? And by the way - how to create filter copying all messages from IMAP to Local Folders ? Is better way then filter3 looking for random string in the subject or somewhere else ? Thank you.

I recently changed hosting and now I am getting login boxes nonstop to my old servers. I see no way to remove them and this is so annoying I may have to change from thunderbird. All my emails are there, it just keeps checking for old servers.

Thanks in advance!

Scrappy Doo

Why is Thunderbird consatntly coming up with "Authentification failure while trying to connect to server outlook.office365.com"? It never used to and would download my hotmail emails perfectly until about a month ago. This is very frustrating, I have removed my hotmail account from thunderbird and re installed it, works for ocassionally the back to same old message authentification failure. What is going on with thunderbird?153.02

can not copy and past in ebay descriptions when trying to make a listing .Also can not type in the description box will work on edge trying to list but can not as i can put information in description box. Tried on edge works fine. turned off enhanced protection still same.

In during a search this problem has happen before after updates

Yesterday morning my Firefox was updated to version 157 and ever since it reopened it has crashed too many times to count. Sometimes it will run for 20-30 minutes, but then it will crash repeatedly in just a few moments or a few minutes after reporting the crash and restarting. I already tried reinstalling the current version with no success in solving the problem. I could not even keep it from crashing while trying to type this question, so I am now using MS Edge as my browser until I can find a fix for Firefox.

Has anyone reported this before? I am working as a contractor for a BigTech company. I am using an online platform/tool of theirs for several years now but after a recent update the work area doesn't show scroll bars anymore. That means I cannot scroll the editor window and can't go beyond the first page. This makes working (and earning money) almost impossible. As even for the tiniest edit I have to download huge tasks which is extremely time-consuming. An inquiry with my manager there indicated that other contractors on firefox experience the same issue. so they consider it a firefox compatibility issue of some kind. They gave me the advice to use Chrome, Edge or Safri instead. Well, I use firefox because I do not want to use Chrome/Edge... Don't know about Safari but my PC is on Windows... Any idea what can cause it and how to resolve the issue?