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With 03.04.2026 they began to notice that the attached emails in eml format (the attached emails have attached documents, mostly pdf) sent from yandex mail stopped opening. Everything used to open well. Eml also does not save to disk. If you send the same files via Gmail, everything opens. Program version 150.0.1

I am trying to get Russian language spellchecked.

I went to this url: https://addons.mozilla.org/en-GB/firefox/addon/russian-ru-language-pack/, installed the pack. Re-opened the browser. But nothing seemed to changed.

I use English locale.

Version 152.0.1 Build ID 20260617213557 Update Channel release User Agent Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:152.0) Gecko/20100101 Firefox/152.0 OS Darwin 25.5.0 Darwin Kernel Version 25.5.0: Mon Apr 27 20:38:00 PDT 2026; root:xnu-12377.121.6~2/RELEASE_ARM64_T8103

I am using Linux Mint and Thunderbird v140ESR.

I have searched the knowledgebase here to find out how to add an attachment to an email. All the screenshots are for the Windows version, even though I have selected my version from the selector on the RHS:

https://support.mozilla.org/en-US/kb/how-use-attachments#thunderbird:linux:tb140-esr

Any advice gratefully received.

Firefox has been my default browser for many years. Every update has made the program less user friendly. I can no longer ready access shortcuts and the number of tiles has been greatly reduced. Previously I had a row of shortcuts on the bookmark toolbar. They no longer show up. Sadly Google does everything I appreciated Firefox for. So Chrome is now my default browser. I have no idea why Mozilla decided to change their once great browser into a total loser.

Eric Bergerud Berkeley CA

The website in question loads great on other browsers and on a new profile. I have attatched images of the website open on original and new profiles. On new profile i didn't change any settings. Things i have tried: 1. disable all extensions 2. disable strict security settings in firefox 3. reset all windows 11 internet settings 4. reset firefox through about:profiles > Restart with addons disabled > Refresh Firefox 5. just to check i tried to copy all the original profile settings on to the new profile, and the website still opens fine, with all the same wxtensions enabled too.

This has only started happening recently. I use that site for publishing articles, it is based on OJS. What more can i try?

Goal: I have outlook on a windows 10 desktop with many .pst files I want to keep (emails in folders and contacts)/import into TB. I want to set up Thunderbird on a new laptop PC and use TB instead of Outlook.

I'm setting up Thunderbird first on my desktop but I don’t know how to import the outlook files – one Q&A answer says first install an older version of TB that can do the outlook import (I started this and it couldn’t find my account so I got stuck); another Q&A answer says the outlook files have to be ‘offered’ to Thunderbird and may or may not be.

Can I have human help? I’m happy to pay. Otherwise I don’t think I can figure it out and I’ll just stick with Outlook. I see someone else switched to TB and then went back to Outlook. Hmmm. I wonder why?

Thank you so much. It sure seems like a great product you offer but it's overwhelming figuring out how to get there from here.

For some reason, opening the tab list on Firefox and Firefox Beta on Android takes 4+ seconds and it's very annoying.

This is on a completely fresh install of Firefox with literally no changes or tabs. It doesn't matter how many tabs I have. It takes about the same amount of time with 0 tabs or 100. This didn't use to happen with Firefox versions from over a year ago. There's something about the new method that caused this for me.

I'm on Android 10 on a Galaxy Note 9. Nothing else (meaningful) running in the background or anything.

I have 3 email accounts which i unified. when log in I get prompted to enter password for all three accounts which I do, then I get prompted again to enter the password to all Password Manager to save my passwords which I do not want and therefore I uncheck it for all three; I then get prompted again for all three which I enter password, then I get imap login error on my main account which I click cancel a few times before it goes away,

I use Thunderbird portable. How do I fix this issue. it should be that one enters the password for each account once not three to four times. I do not want to use Password Manager to Save my accounts.

Also if ever I have to change password how do I do that? thank for your help.

I have the portable version, download from portable apps website.

I use Thunderbird with Threaded View enabled and would like to keep using it.

What I am looking for is a way to have Thunderbird automatically keep older threads collapsed, while allowing threads that contain new or unread messages to remain expanded or become expanded automatically.

For example, a thread receives a new message - it is fine for that thread to be expanded. All other existing threads without new activity should remain collapsed. When Thunderbird is restarted, I would like older threads to stay collapsed rather than having many previously viewed threads expanded.

Is there a setting, hidden preference, add-on, or workaround that provides this behavior?

I am using Thunderbird on Kubuntu Linux.

A weird thing has started happening to my Thunderbird inbox in the last couple of days. Emails are showing as from a totally different sender. For example, a Google search on Sondheim has been "sent" by EDF (my electricity supplier) and some Groupon emails are showing as coming from people I correspond with. Also a Keto bread recipe from a low carb group I belong to has been "sent" by one of my work clients! More weirdly, I copied them into a subfolder on my inbox and they then appeared correctly. I have tried repairing the folder but it made no difference.

I recently updated windows and since then I have not been able to login to my emails and or recover contacts or calendar on thunderbird. I am able to login to my primary email but I have no contacts and am not able to login to my other 2 email accounts.

Hello,

Does anybody knows why or how this happened? Thunderbird has worked just fine since the May 1. My internet connection works well. Has anybody had this problem before?

Thanks

N DC

I can sign in with my google account, but when I come to the installation window with Pop3 and SMTP another password is requested. I don't know which, and there's no possibilty to get a new. Please help Jens

My old desktop used Windows 7 and I used Thunderbird as my mail. I had a tech help and transfer files to a new desktop running Windows 11. Mail came over but he said he couldn't use thunderbird for a reason??? and switched it to Spectrum Mail which I don't like. I would like to restart a thunderbird mail account again but don't remember my password and my old computer has been destroyed. Any way to do this without starting from scratch and losing all my old mail and contacts?