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I'm in the process of cleaning up Thunderbird e-mail before moving to a new computer. I started with 11,593 e-mails in my Inbox and 7,799 e-mails in my Sent folder. I'm now down to 7,634 in my Inbox and 4,965 in my Sent folder. I've allocated 2 weeks for this process and found that it's taking me about 3 hours per day to meet my daily goals. I'm finding that I'm spending at LEAST half the time responding to "Empty-Trash/Compact-folders" requests. There are times I can delete 50 e-mails at a time without getting a request. Other times I will try to delete ten e-mails and get the request. With the old version of Thunderbird I could literally delete hundreds of e-mails at a time. Can you help? Russ Bukwa Yardley, PA ps. I have intentionally given you specific numbers. Based on my software- and test-engineering experience, I speculate you need to create a stress test to solve this nagging problem.

why is everything going to trash in thunderer but not in Comcast.net email what do i do o i eed to reinstall it and uninstall it

can not  do restore point

Hi,

Firefox version: 139.0.4 (64-bit) OS: Windows 11

I have been having issues where Firefox tab will just crash out for no reason it appears and it happens at random times and once the tab start to crash, and I restore it, it will crash again and again. The only way tog et out of the loop is to restart Firefox.

I have tried: Refreshing/Reset, Clearing Cache and History removing all themes, disabling extensions, disabling my anti virus. Turning off hardware acceleration didn't make any different.

I currently have 2 extensions enabled: uBlock Origin 1.64.0 and Bitwarden Password Manager 2025.5.0

In the about:Crashes I have reported them all and they seem to have the same type of reasons in the Raw data/Minidump which are: EXCEPTION_ACCESS_VIOLATION_WRITE EXCEPTION_ACCESS_VIOLATION_READ

Any help as to what to try next?

Gaz

I am using MacOS 10.13, Thunderbird 115.15.16ESR: my Hotmail worked until 15 May 2025 and then it would not download new emails. Screenshots are available if you want me to post them. I got an error message: "authentication failure while connecting to server outlook.office365.com". I updated Thunderbird to the latest for my OS: 115.18.0ESR. Still no new emails. I deleted my email account on Thunderbird and tried to reinstate it. Now I get an error message when trying to set up the account: "Unable to log in at server. Probably wrong configuration, username or password." I tested my password by logging into my Microsoft account with it on my browser. I can also login to my email using Firefox, but I want my Thunderbird email client to work again.

The configuration I am using is: I use my normal hotmail password in the password field. I also set up a new App Password with Microsoft and tried that without success. With the 115.18 update there is a new field: Your login. I just put my hotmail email address in here. incoming: outlook.office365.com, port 993, SSL/TLS, Oauth2 
outgoing: smtp.office365.com, port 587, STARTTLS, Oauth2 (I have also tried: smtp-mail.outlook.com)

I enabled 2-step authentication with Microsoft in my Microsoft account more than a year ago. Interestingly, I don't get a prompt on my iPhone Microsoft Authentication App when I select Done when trying to set up the hotmail account on Thunderbird.

Please help. I am desperate, and I have wasted a lot of time on this without success. Cheers

Hello,

I have not found an answer to my question anywhere, nor can I solve the problem I have encountered on my own. The thing is that when I log into my YouTube account and then close the browser, turn off the tablet, after restarting I have to go through the process of logging in to my YouTube account again. I think the browser is great. I am talking about the Firefox Focus browser. This problem does not occur on Firefox, but for my old hardware it is too slow.

Arek

In our work we use the cardbook extension; starting from version 95.2 it began asking the user for permission. I wouldn’t really like to explain to a crowd of users what to do with this request. Is there some way to grant these permissions without asking the user for them?

Hello,

Recently I have started to have emails fail to deliver to a certain domain and the message that comes back is

550 DKIM Sender Invalid - envelope rejected.

I am using Thunderbird v128.8.1 esr (64-bit). Extensions installed are: 1. Attachment Saver (Deimios, v.0.2.2) 2. FileLink provider for Send (Teal Dulcet v2.1.1) 3. Remove Duplicate Messages (Eyal Rozenberg v0.6.1)

I have been in communication with this client for several years and not had this problem before. When I send email to the same recipients using WebMail there is no problem, it is only when I send from Thunderbird.

I am not using any encryption type of setup.

Has anyone come across this before? Does anyone know of a solution?

Thanks, Franc.

I have a rule that moves email messages from backups to a 'Backup' folder. I also have another rule that moves emails address to myself to 'My Mail'.

When I start TB 128.11.1esr in the morning my 'Backup' and 'My Mail' folders show new email counts. When I click on 'My Mail' the number on it decreases and 'Backup' increases. This happens with other rules on other folders.

So, my question is this behavior caused my 'Message Filters' being triggered when I click a folder or potentially a latent refresh of the folders new email counts.

Thanks

Hello, I want to delete all incoming gmail messages. I have set up a filter but instead of deleting them it puts them in the Trash folder.

Is this the expected behaviour?

Today randomly i noticed that my bookmark bar is waaay shorter out of the blue, i didn't change or adjust anything, all i do is the updates from mozilla that's all, it was all music it really saddens me because atm it's lost forever, i hope somebody can help me (i don't know since when it disappered i literally just noticed it right now ...)

When typing an email I would like to have it set so that at the start of each new sentence or paragraph it starts with a capital letter. Is there somewhere in Settings to allow me to achieve this?

Issue Description: I'm encountering a privacy tab setting issue with the Firefox app on my Android phone. When I close the Firefox app, all private tabs are automatically cleared and not retained. However, when I previously used Firefox on an iPhone (iOS 11), private tabs remained open after relaunching the app.

Specific Questions:

1.Is there a setting in the Android version of Firefox to retain private tabs after closing the app?

2.Is this behavior due to Android's restrictions or Firefox's default configuration?

3.If no direct setting exists, are there workarounds (e.g., extensions or specific versions) to achieve this?

My mobile phone is: Nothing Phone (3a) Pro Android 15

Any advice from users with similar experiences would be greatly appreciated. Thank you!

Hi there,

Every time I try to use my emails on Thunderbird, it says it is not connected to the server.

Could you help with this, please?

My emails are: m.ragab@arabic-englishlanguageservices.co.uk info@arabic-englishlanguageservices.co.uk

Regards, Mohamed

I'm writing an extendion wich needs to download a file:

```js

   let url = URL.createObjectURL(new Blob([content + '\n']));

   try {
       const id = await browser.downloads.download(
           {
               filename: "some_name",
               saveAs: false,
               conflictAction: "overwrite",
               url: url
           }
       );

       await browser.downloads.erase({id: id});
   } finally {
       URL.revokeObjectURL(url);
   }

```

If the file does not exist yet, it works great. If the file exists but is exactly the same, it still works. But if there is a need to override the file with different content, the file gets deleted and it is not being replaced.

According to inotifywait, the new file IS created, but immediately deleted.

Do I understand something wrong? What am I supposed to do?

YouTube videos encoded at 60 frames per second are extremely choppy in Firefox only. Microsoft Edge plays the same videos perfectly.

I have deleted my profile and reinstalled Firefox, updated graphics driver to the latest version, and toggled hardware acceleration on and off. Nothing helps.

I have Version 128.11.1esr (64-bit) which is up to date.

The software has always been a little slow, but now it takes ages to download emails.

I don't save lots of emails, just a few folders, can anyone advise what the problem could be?

Thank you