Forum Bashkësie Thunderbird

Thunderbird is not synchronizing with Mailfence. My other email accounts (Outlook, Gmail) work fine. TB connects to them, downloads message headers and displays the number of messages correctly. With Mailfence, the messages stop at "connected to imap.mailfence.com" and stalls there. The message disappears after a few seconds and nothing else happens. This happened this morning when I first launched TB. I then got an update to 128.11.1. No change. I did receive the Windows Update 2025-06 Cumulative Update sometime overnight prior to launching TB.

I converted to Thunderbird 128,11.1esr in May 2025. My address book did not migrate to the newer version and I don't have the old one. Also, I don't know how to return to the previous version of Thunderbird.

Can anyone tell me how to set up the THUNDERBIRD TO ALWAYS LOG-IN into its own Messenger and avoid the Yahoo's interference with his INADEQUATE Messenger format - this should not be high-science question but I have difficulties to find an information in the HELP-section - thanks, Tony H. ...!

When I delete an email message, they do not go to Trash, they just disappear. I have used TB for several years but this started happening just recently. I can right click on a message and Send To to Trash, or drag and drop, and both those and work. I have went through all the settings I can find, and don't see any obvious problems. I did find a "fix" from 2023 that involved deleting the Smart Mailboxes folder and restarting TB but that that didn't help.

i am trying to copy my Thunderbird to a new laptop. I am asked to enter my password but I did not keep a note of this. How can I find this password to complete getting Thunderbird on my new Laptop. I am 87 tears old and not very technical minded. please make any answers simple. Thank you

Recently, my SENT file has not been keeping the email I send. Has anyone else had this problem? Can anyone suggest how or why this has started happening?

I count on being able to look and see that I have sent or replied.

Thanks for any help, Jerry

Monday: Computer #1 lost all e-mail use and old correspondence. Computer #2 had e-mail service. Left Computer #2 up with program (Tebra) until account needed verification which needed e-mail to get the code (could not). Now we have both computers which cannot work. what can we do to get our e-mail back???

Hello. I am trying to send emails from Thunderbird 128/140 for Linux via Exchange Server 2010 via SMTP. SMTP authorization is performed using Kerberos/GSSAPI, without connection encryption (Connection security: Note). An error occurs when sending: "Sending of the message failed. The Kerberos/GSSAPI ticket was not accepted by the Outgoing server (SMTP) test.domain.name. Please check that you are logged in to the kerberos/GSSAPI realm" Error console: mailnews.smtp: NS_ERROR_FAILURE: Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIMailAuthModule.getNextToken]

   getNextGssapiToken resource:///modules/MailAuthenticator.sys.mjs:117
   _actionAUTH_GSSAPI resource:///modules/SmtpClient.sys.mjs:1145
   _onCommand resource:///modules/SmtpClient.sys.mjs:605
   _parse resource:///modules/SmtpClient.sys.mjs:402
   _onData resource:///modules/SmtpClient.sys.mjs:459

SmtpClient.sys.mjs:1147:19

mailnews.smtp: Authentication failed: AUTH GSSAPI SmtpClient.sys.mjs:784:17

   _onAuthFailed resource:///modules/SmtpClient.sys.mjs:784
   _actionAUTHComplete resource:///modules/SmtpClient.sys.mjs:1185
   _actionAUTH_GSSAPI resource:///modules/SmtpClient.sys.mjs:1148
   _onCommand resource:///modules/SmtpClient.sys.mjs:605
   _parse resource:///modules/SmtpClient.sys.mjs:402
   _onData resource:///modules/SmtpClient.sys.mjs:459

IMAP with Kerberos/GSSAPI is works correctly. Evolution works correctly with the same SMTP settings (it logs in and sends emails).

Issue 1: When using Shift+F5 to Get All New Messages: This command used to go through my accounts within several seconds; but now this can take several minutes. What changed to cause this?

Issue 2: I have one account that is having server problems... causing must click popups in TB. How do I exclude this account when using Shift+F5? I've tried Unchecking the boxes for "Check for new messages at startup" and "Check for new messages every xx minutes". And one help result suggests "Disable immediate notifications: Uncheck"; but I do not see such a setting.

Hi there,

I've recently had a problem with a couple of client PCs where their Thunderbird profile folder has grown to fill the entire hard drive. In both cases, the relevant account folder in the profile's ImapMail dir had grown to over 300Gb. This account takes up 45Gb on the server (where I'm running Dovecot with maildir storage). In another case on both PCs, an 18Gb account had grown to over 90Gb.

Both client PCs are running up-to-date Thunderbird (139.0.2 64bit), one under Windows 10 and one under Windows 11. Both had auto-compact set, with the minimum saving reduced to 100Mb. Both problematic accounts are shared accounts that use a deeply-nested folder structure. In both cases, I was forced to delete and then recreate the these accounts in Thunderbird.

I'm an experienced sysadmin who is also running the mail server, so I am able to provide any extra info needed. Additionally, I accept that these are large email accounts; I'm in the process of setting up an email archive system for the client using Piler. I have read many other reports of outsize Thunderbird data folders; these are usually referring to less than 20Gb. The problems we're having seem to be an order of magnitude larger!

Thanks in advance, P.

No matter what I do all I get is this: Login to server imap.gmail.com with username smyn1118 failed. and: Unable to log in to server. Probably wrong configuration, user name or password. Any ideas? ....... Sam

Hello,

Scrolling vertically with mouse-wheel in Thunderbird is uneven and unstable, while scrolling in Firefox* is perfect. (*or any other program) What could be wrong?

Thanks, Mark

Contacts with only an Organization and no first and last name will not synchronize to iCloud. I have to add the company name in the last name field to get it to sync. Running version 139.0.2 (64-bit).

Thunderbird 138/139, Windows 11 Pro 23H2. While composing a message, after a few lines the app freezes. Both the compose window and the main TB window freeze. Only opening the Windows Task manager allows me to close them. This did not happen with earlier versions.

If I save the message every few seconds while composing I can get most of the message back and continue after restarting TB. This behavior is the same in both the normal and troubleshooting TB modes. I can't even find a crash log to send to Mozilla.

Where shall I look next?

Thank you!

We've not changed any settings and today the name and email address of the sender of an email no longer appear when replying. It's always appeared prior to today.

Regards, David