Thunderbird Community Forum

Options allowed me to set background colour, needed urgently as I am visually impaired. Online advice to set colours is: tools/options/...............go from there But options has disappeared now. Should I revert to an earlier version of Tbird, or can you reinstate, OR do I look elsewhere for an email app?? I am a longterm user, and wish to continue with Tbird. Oldcove99 // Aug 2 2025

Hi everyone, since I enabled two-factor authentication (2FA) on my email accounts at web.de and gmx.de, I can no longer use these accounts reliably in Mozilla Thunderbird.

I set up the accounts using an application-specific password (a so-called "one-time password"), as provided by web.de/gmx.de when 2FA is active. The initial setup works, and I can send and receive emails for a short time. But shortly after, Thunderbird asks me for a new password again — and this keeps repeating.

I also tried using my regular account password, but of course that doesn’t work either, since Thunderbird has no way of entering the second authentication step required by 2FA.

Interestingly, everything works fine on my smartphone with the Bluemail app. There I can use the application-specific password permanently without any issues.

Does anyone have an idea what's going on? Could it be that Thunderbird doesn’t properly store or maintain sessions for app passwords? Or is there another workaround?

Thanks in advance!

Technical details (unchanged during setup): Incoming Mail: Server type: IMAP Server: imap.web.de Port: 993 Security: SSL/TLS Authentication method: Normal password

Outgoing Mail: SMTP server: smtp.web.de Port: 587 Security: STARTTLS Authentication method: Normal password

Guten Tag Seit ca. einer Wochen erhalte ich e-mails die angeblich keine richtige Verbindung mit HTML herstellen können. Was sollt ich tun und um was haldelt es sich hier. Mit freundlichen Grüssen Hansueli Rheiner [email protected]

Hello I have asked this before but i did not get an answer i could use i did get an answer but it did not work. So i am asking again. I can run Thunderbird for like a month and then all of a sudden all inbox mail goes to trash folder abut not with the name of the sender with my name as the sender I have reinstalled several times i have changed my security gone from 64 it to 32 bit removed some add ons or extensions. Now it is run from Comcast email and that is correct as far as i know. Not sure i have it filtered correctly i am stumped please help me here . every time i d reinstall i need to put back manually all my contacts and that takes forever . Please i have even disabled Norton antivirus for 1 hour and it was doing this with windows explorer as well so please I know i asked this before but nothing worked. I hate to stop using Thunderbird but if this keeps happening i may need to. the only extensions i have in Thunderbird enabled are emojis, config button, restart, and ublblock. Not sure how to get to filters and change any thing. Thanks Please i need help thanks upset Thunderbird user

I get a lot of spam in my inbox. Previously there was a button to click to remove all of these to the trashbasket. That button has now dissappeard - I WANT IT BACK!!!

Since the change to the search facility I was having problems trying to setup a search with multiple criteria. In the process of trying to get into the old interface I did a rebuild database on a couple of folders in case there was any corruption preventing the interface to pop open- no progress and am still disappointed that the search facility is harder to use. That's NOT my problem. My problem is that ever since I'm getting duplicate copies of all incoming emails. How do I resolve this?

On Thunderbird I receive emails but I am not able to send emails Error message is Sending of message failed The message could not be sent because connecting to outgoing server (SMTP) mail.smtp.optusnet.com.au failed. The server may be unavailable or is refusing SMTP connections. Please verify that your outgoing server (SMTP) settings are correct and try again.

Hi all,

I've been using Eudora for almost 30 years but from time to time checked Thunderbird too because Eudora was discontinued in 2006. so I have to use the OAUTH proxy running on another computer in local network.

I have now installed Thunderbird 141.0 and configured IMAP accounts for one email account I have since Yahoo! Mail's first days in 1997. and the one I have since gmail's first days in 2004.

Everything seems to be working correctly but there is one thing I can't figure out why it is happening.

I have the same signature containing an 18x18 pixel .gif configured in both Eudora and Thunderbird and they both display correctly on the recipient's side and on gmail's webmail.

The problem is - every such an email sent by Thunderbird is at gmail's webmail recognized as "containing attachment" and is marked with a peperclip icon which is not the case when email is sent with Eudora.

The consequence is - it now looks on the gmail's webmail as every single email that I ever send has an attachment which prevents noticing the messages that really do have an attachment.

I don't see any way of inserting code tags here on the forum to post the HTML code of the signatures sent by Eudora and by Thunderbird once the email arrives into gmail's Sent folder so I am sending the screenshot.

The upper HTML is how signature looks like in online gmail's Sent mailbox > Show Original when sent by Eudora and below there is how it looks like when sent by Thunderbird.

And here is the pastebin of the same HTML code: https://pastebin.com/4YHnNctC

HTML files attached as a signature to Eudora and Thunderbird: https://pastebin.com/17NuE1SY

I do NOT want to use an image from online URL with moz-do-not-send="true" tag. I want to use the .gif file from my hard disk sent in such a way it wouldn't be (by gmail's webmail) marked as an attachment and in a such way the image used for signature would be part of the message body - exactly what works well when using Eudora.

When the message is downloaded for offline reading the image used in the signature should NOT be "remote content", it should be part of the message.

I have not been able to open emails in Thunderbird since 9:30 yesterday morning. Nothing has been changed in the settings. It randomly started asking for the password. When I enter the password (which is working for mail.yahoo), I receive the following message:

Login to server pop.att.yahoo.com with username [email protected] failed.

I've tried the 'retry' button and 'enter new password' many times without success. I'm using Windows 10 and Thunderbird 140.1.0esr.

I'm self-employed and desperately need access to Thunderbird. This has happened many times over the years, where it randomly stops working, then mysteriously fixes it on it's own. Any guidance would be greatly appreciated.

Thank you for your help.

Hi,

I updated to 140 on one windows laptop, since then the Inbox sub-folders of a Ymail account disappear. The weird thing was that on start-up, some were displayed, but disappear one-by-one. Another laptop which was running 120 still had the sub-folders intact. I updated that to 140, and when TB restarted, the sub-folders were displayed, then slowly disappeared, one-by-one. It is only the Ymail account that is effected, we have a couple of Outlook accounts that display their Inbox sub-folders. I have selected "Subscribe", all folders are selected. I've unticked the sub-folders thinking that maybe it would allow me to re-select them, but on a re-start they are still shown as selected.

Hope you have a solution.

Thanks,

b0b

Starting today, Aug. 1, 2025 I get this message when trying to log into my email. It's been like this all day. "Temporary Authentication Failure." The page opens with my previous emails and the blue status line in the bottom right starts to make it look likes it is downloading the mail, but then that error pops up. What do I do besides waiting?

Dale W.

Recently I changed my Gmail password and Thunderbird keeps asking me to allow thunderbird to access my Google account; see attached image. I can NOT find Allow any place. (I now read my Gmail on the web.)

Thank you for your help.

Ernie

So I have been switching over to Linux as Windows 10 discontinuation is coming up. The problem I just ran into today is how Thunderbird does file names on Linux compared to Windows. Windows has the sender's email in parentheses ([email protected]) and Linux has the sender's email in angle brackets <[email protected]>. The problem that has arisen, is that when trying to save an email to a location that is attached via smb (for example: smb://192.168.1.111/Network_Attached_Files) it fails. I can save the email locally, but then even trying to cut and paste to the smb location still fails. I found the problem to be the angle brackets in the file name, smb just doesnt accept it. Thunderbird on Windows uses parentheses so the file name isnt a problem.

Is there any way to change how Thunderbird saved the file name by default, to change the angle brackets back to parentheses like it does in Windows? (when you right click -> save as for example)

Or is there a way to simply remove the sender name and email from the file name by default? So just the subject name and date is there.

I find it strange that I am the first person who seems to have come across this problem. I suppose saving emails on a network attached storage location is far less common than locally on a PC, but still Id think there would be at least a hundred+ people who use Thunderbird and use network storage that this would have already affected and been a problem. Is the angle bracket thing in the file name something new maybe?

Thunderbird 128.13.0.esr on Linux Mint 22.1

Hi, my mail provider has set up a new 2FA login procedure, which generally works. However, the situation is as follows: - username and password are stored in TB passwords - Nevertheless, 9 authentication windows (for 7 calenders/tasks) open after every app start. These must be processed in the exact correct order, 1-n. If you try to enter the credentials in a window out of order, it won't work. Furthermore, windows out of order can neither be closed nor can you click Cancel. I've since discovered that it's sufficient to enter the credentials only in the first window. However, the remaining windows then have to be laboriously closed IN THE CORRECT ORDER. - Also, even during a session, an authentication window opens repeatedly, depending on session duration

Since the authentication generally works, this clearly seems to be a Thunderbird problem.

I use the Search Messages tool daily, and I have always used the keyboard shortcut Cmd-Shft-F. That shortcut seems to have been eliminated. Could it be restored?

Thanks, Ben

In previous versions, when inserting a photo in a message, the program returned to the message. Now, it returns to the main screen or some other program. This is very annoying. Is there a setting that can change this or do the programmers need to fix the problem?