Thunderbird Community Forum

Been using thunderbird for years, stopped getting new messages. Removed/deleted the accounts and tried to setup again and get error unable to login at server, probably wrong configuration, username or password. username and password are entered correctly, changed them just to verify, using default settings and appear to match what their supposed to be as documented. Gmail accounts... Any help appreciated...

I am in my seventies. I have the Firebird 1 tee shirt :-) . I recently received a missive from Thunderbird asking for a donation. I click through and get a donate button. THE DONATE BUTTON DOES NOT WORK in Firefox with NoScript. WTF.

I follow some IT forums and I am to update with security and userability issues. The best advice as I see it is to TURN OFF scripts with NoScript.

After a lot of faffing about I donated. When I first started working 55 years ago I given 2 bits of advice.

 1  Never put obstacles in the way of customers paying.
 2 Never put obstacles in the way of customers ordering.

I think you should heed the first bit of advice. How many Thunderbird users were tempted to donate but were in a similar position to me and gave up?

I can't send Free-online emails on Thunderbird/Macbook, although I can receive them (see Error notification attached). I checked the Outgoing server settings in the Accounts settings which seem right (relay.free-online.net). This has been happening for about a week. Thanks for your help.

I cannot set up my icloud email in Thunderbird.

Error implies that the password is incorrect but i know it's correct, i am able to sign in to webmail using it just to prove a point.

"Unable to log in at server. Probably wrong configuration, username or password"

I have verified server info on apple support and verified username and password is what i use on all other devices. Username and password also works on MS outlook.

Spectrum had me change my password for one of my accounts on Thunderbird. I changed it with Spectrum. That account was working fine from Nov. 6 until today, Nov. 16; today, it decided that my password wouldn't work. I tried to change it when it asked at the time I was trying to send an email; it wouldn't take. I then went into "saved passwords" and tried to change it; it wanted a pin. This is my** first problem;** Norton has no idea what that is. Thunderbird asked for other sign-in methods including a Yahoo email, but I have no idea what it wants as it doesn't want the password for that Yahoo account. What is it looking for????

I deleted the account from Thunderbird's password manager. After my shutting down and reopening Thunderbird a few times, it finally worked --however, it didn't ask for a password and sent and received email just fine. Thunderbird now doesn't have that account listed in its password manager, but is giving me my mail and sending my mail out without asking me for a password. **This is my second problem.**

Since this is all combined, I'm sending both questions together; otherwise, I wouldn't do so. Does anyone know what's happening and how to get a password back as a necessity for that email account?

All I am trying to do is change the subject line on emails. I found the add ons Header tools lite and improved and installed them. When I select a email to edit the subject line I highlight the message go to menu message>header tools lite>edit lite or edit full source neither one does anything???

Also tried opening the email go to menu message>header tools lite>change header details hit enter nothing happens. Please help and thanks in advance

On Monday, 17 November 2025 the Security Certificate expired and I stopped receiving emails both on my computer and Andriod Device. As a result I am not receiving any emails through Thunderbird, but I can go to email host site to view them.

I logged in my computer tonight and clicked here and clicked there and the error message: "The certificate for mail.homebizmall.net is not valid for that server. Someone could be trying to impersonate the server. Create an exception but this could mean that someone has stolen your certificate and may be able to impersonate you."

So it seems the POP server and the SMTP server certificates were only valid for 3 months and I was FORCED to create the exception for both servers. Now I am worried the security has been breached.

By clicking here and clicking there, I stumbled on a few people who seem to have this problem, but each with their own limitations. My operating System is Windows 10 without the option to upgrade. I have not extended the security updates because I don't understand if it is just the operating system uploading to the cloud or everything on my computer and I am not prepared to do the latter.

Is it safe to leave the band aid on that I have used for the moment? Can I create an exception for the phone? Or is there a glitch that someone needs to walk me through fixing?

Thanking you in advance

Clinton

Hi. Ubuntu Unity 24.04 Thunderbird 140.5

When creating a New Message, the top 5 lines are missing - i.e the “End: (U)” (end time) line is displayed at the top of the screen. The only way to enter the Title of the Event is to drag the window down. Also, the Event window CANNOT be resized. This has been happening for more than a year now. Can you help? Thanks, M...

For my internal operation, I typically store the date/time of files at the beginning of the file name to help with time based sorting.

When I store incoming emails from Thunderbird, the date/time is added at the end of the file name.

Here is my question: is there a way to make Thunderbird change the sequence in the file name and put date/time at the front (preferably in a format I would want to use such as yyymmdd).

I have several problems with Thunderbird:

- When I first open TB, my Inbox shows "No message found". I have 9654 E-mails in the Inbox. If I click on a different folder and then click on Inbox again, I can see the E-mails in the Inbox. - About once a week when I first open TB, the program begins downloading 10000 E-mails (sometimes more). All these E-mails, with the exception of a few received the previous night, have already been downloaded. This download takes as long as 45 minutes. - TB marks many E-mails as Spam even though I have previously marked these E-mail addresses as not Spam.

Any help with these problems appreciated.

M. Campbell

Hi everyone,

I'm trying to add my school email address to Thunderbird, but I keep getting a "Unable to log in at server. Probably wrong configuration, username, or password." error. I know that the username is right, and for the password, I've tried using the right password vs. leaving that field blank. For the configuration, I don't know if that's right.

The auto-configuration finds a configuration in the Mozilla ISP database, but that configuration leads me to the aforementioned error message. If the configuration is wrong, how would I go about finding the right information?

Alternatively, might it be the case that my school (the organization) has disabled using Thunderbird for our email. For any help looking into this, it's a @berkeley.edu address.

Thank you for your help!

i cannot get Gmail configured in Thunderbird. ive deleted it and re tried countless times but is keeps saying wrong credentials. ive followed all the guides and done everything . what is NOT happening , is Thunderbird does not open a browser to sign in with google. why?

Not a huge problem, but VERY FRUSTRATING! After years of reliable performance, my personalized incoming mail notification sound (wav format) suddenly stopped playing. The 'test' function in settings works fine, but NOTHING happens when actually downloading messages. I've tried EVERY possible FIX, but NO LUCK. Any suggestions? Thanks

when starting a new calendar entry, this may look like this: textline one

  textline two (three spaces at begin)
  textline three (6 spaces at begin)

     textline with tab right

     * Bulleted list itemtextline with bullet point

end of testtext

After closing the edit, the text looks like this: textline one textline two (three spaces at begin) textline three (6 spaces at begin)

textline with tab right

textline with bullet point

end of testtext

However, the edits on my phone, as shown in the image, show that the text structure commands are still there (except bullet point got lost).

So here is my question: how can I get the calendar entries show the obviously maintained text structure?

Hello. I have a yahoo email address, but I receive all my emails on Thunderbird. When I set the Thunderbird account up all my settings were put in automatically by Thunderbird and everything worked fine. Since then, I have logged into my Yahoo account online and changed the password.....for security reasons. My Thunderbird account no longer works as it cannot retrieve my emails from Yahoo, and I cannot find how to change things in my Thunderbird account. Any ideas?

Nick.

I've been unable to use TB since July/August 2025. I don't have detailed documentation of the details, but my recollection is that an error was occurring whenever I would try to send an email. My troubleshooting led to the possibility that the problem was with the SMTP protocol.

Please let me know whether anything more was contributed here in this forum. Meanwhile I will install TB again and try to re-created the problem. Thanks for your help, SweetTasha