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My Thunderbird has been working properly for about 30 years, but now refuses to open. Message received says 'Authentication failed'. This happens repeatedly (for at least 20-30 times) and appears to relate to my password. It suggests 'Retry' or 'Enter new password'. The 'Retry' repeats as before so I check the Saved Passwords and enter the one saved. I get the same message. I am using Version 115 and have been for some time.

Could this be related to a change of Profile? There must be a way to reset the password? I have checked all the settings and no errors appear, all settings confirmed.

I have thought about a Recovery Mode and seem to remember seeing a message that I do have that. I just don't know how to access it.

I clicked the 'a' key on a folder in my email and a stack of emails disappeared. Some unread and some requiring a response! They're not in the archive folder.

Thanks!

I recently changed ISP carriers (from Network Solutions to Intermedia). The transfer was slow but everything worked just fine. Then, a few weeks later, I received a notice from "ExQuilla" asking me to sign up & pay, which I did not do. Monday morning, my Thunderbird email was frozen. I was able to go to the ISP's online portal to access my email and still can but I prefer Thunderbird which I have been using for decades. Mozilla has always been free other than donations. Is ExQuilla a part of Mozilla? Tim J Email hidden for privacy reasons

I want to prepare emails in advance (in the Outbox folder?) and have Thunderbird send them later, at a time that I specify when I prepare them. I looked at the Events and Tasks tab but I can't see how to do what I want with a task. All the prepared emails can be sent at the same time. Can it be done? Thanks Peter M

We have a ministry known as ECAM (it's an acronym).. How can I filter on subject lines without also getting every subject containing the word became?

1. Sometimes I use the browser while the system is in dark mode.
2. Then I switch system to light mode. FF recognizes it and switches to light mode accordingly.
3. Then I use it in light mode for a little more.
4. Then some time passes (maybe a few hours), I don't use FF during that time.
5. Then, I tap on FF icon, the browser starts, but immediately switches back to dark mode, while the system is still in light mode.
6. I have to close FF by swiping on it in task switcher, and then tap on the app again.
7. FF now uses light/dark theme according to system.

Device: Motorola Edge 30 Neo with stock Android 14.

I am using Fennec: 124.1.0 (Build #1241020), 516df33ca9+ GV: 124.0.1-20240326023132 AS: 124.0

I am no longer able to view my Pinterest account via FIrefox. The page is blank and can't see any of my pins. Sometimes, I can't even log in to the account. I have contacted Pinterest and they don't know what the issue is. I have cleared cache, removed extensions etc but nothing seems to work. I don't have this issue with Google chrome or Microsoft edge. I only have this issue with Firefox. Why is that??

I'm using the latest version of THUNDERBIRD for WINDOWS (now 10 HOME), but this problem has existed for years with previous versions of THUNDERBIRD and former releases of WINDOWS, both HOME & PRO releases. And, it seems to be very specific. When i receive e-mails from (especially) 2 friends who both use AOL as their e-mail client, when I receive them, the imaged files (or memes) are always 'converted into attachments, and what shows in the Body Text of the e-mails is empty boxes. Yet, when I get e-mails from others, including from commercial sources, if there are images within the Body Text, they are present there. This IS very annoying because many times the e-mails I get from these two friends are technical e-mails, with clarifying images as part of the Body Text. When I have mentioned this to them, their responses are that n one else complains, only me, and so the problem MUST BE at my end, but that doesn't make sense, since when I receive e-mails from others (Gmail, etal.) any included images are fully where they belong. ++++++++++++++++++++ Secondly, WHY is it that when there are threaded e-mails in the Sent folder, the ARROW to expand the thread appears at the left side, but in the Delete folder the ARROW appears between the title of the e-mail & the next column? This IS very annoying!!!! Also, when I'm in the DELETE folder, sometimes only two options appear at the right side: Archive Delete, BUT in other incidences, there's a plethora of alternative options, and the Delete option is positioned in a different place. More often than not, I click on the option to send it e-mail to the Archive folder, when I really wanted to Delete it permanently. Another major annoyance!!!! Thank you robert herold

 17mkombi@gmail.com   OR   rhh.jr5387@gmail.com

I recently got a new computer. Installed firefox onto it. Brought over my profile with all my data and bookmarks. But for the life of me, the page would just sporadically flicker. I tried messing with the settings; performance settings; hardware acceleration. I tried refreshing firefox. But nothing.

im unable to progress further than this and it wont matter because im not interested in any email service that doesnt have at least and preferably more than 15gb storage like gmail. send reply to- [removed from support forum]

I can't receive emails at any address from those in Thunderbird. I have several addresses, some in Gmail but not all. And in each of them I get this message: The STAT command did not succeed. Error getting message number and sizes. Mail server pop.gmail.com responded: [AUTH] Invalid credentials. I am using version 115.5.2

I have been struggling with this problem for about 6 months now and no-one I've asked has been able to help me. Even my computer guru failed me! I think it was after an update about last June when I started having this problem An nothing I've tried has had any effect. I had a Geek Squad guy on the phone with me for about 45 minutes to no effect. He said he'd never seen the problem before. I have business emails on that account so I don't want to risk losing them. Can anyone help me please? Christine

I have latest Thunderbird version (115.9.0 64bit) on fully patched Ubuntu 22.04.4 LTS.

I'm trying to get it to display Day-of-Week for old messages - is this possible? I have tried all sorts of combination as detailed HERE to no avail.

I'd like concise instructions on how to do this (if it can be done). I do not believe trying a new profile will work as I need to test this for old messages - at least for messages older than a week.

From the link above, I can the Day-of-Week to work for the current week - but that only displays the day and time. What I'm after is as shown in the attached Outlook screenshot. Also see the closest I can get that to match in the Thunderbird screenshot.

I've been using Thunderbird for years and have never had this problem. Since the upgrade today, after I run Thunderbird once and close it I can no longer start it up again. I have to reboot or use Task Manager to kill it in order to run it. This is on Windows 11. Please help - not an acceptable workaround for long. Optionally, how do I downgrade to previous version? I should know better than allow automatic upgrades.

Adding a couple images below, when it has started successfully it shows as one of the Apps in Task Manager. When I close it, Thunderbird drops into the Background Processes but doesn't end. I have to kill it here in order to start it again.