Thunderbird Support Forum

Created several email mailing lists. Stored them in the Personal Address Book (PAB). I'm sorry, but Thunderbird doesn't seem to work like any other email client. How do I address an email using one of those mailing lists in the PAB. Tried typing the whole name of the mailing list in the To: field. Didn't work. I'm not entirely stupid but it doesn't make sense to me.

Hello,

Whenever I start Thunderbird a brief, white screen flashes before the black background that I prefer loads. I have searched for a solution but found none. Could you help me getting rid of that screen? Thanks for any input.

Since starting my Win 10 Pro computer today, Thunderbird 115.4.2 (64-bit) has been "dead in the water". When it's launched, it posts the customary "Downloading Message 1 of [N]" status report, but then hangs right there, takes 3 or 4 minutes even to (re-)populate the tabs and panes that had been open, doesn't get past the alleged first new msg even in 15 or 20 minutes. When it does populate the Inbox pane, it shows no messages newer than last night just before shutdown. Very sluggish response to cursor, too: for ex. 30 seconds from clicking on a msg title in the Inbox pane to displaying that msg, even longer to bring up Help/About (with "Not Responding" shown in its title bar.)

  I get my mail through gmail's IMAP server but prefer to use Tbird's interface . Thinking there might be something evil about the first msg that was waiting to be downloaded, I used gmail's web interface to review everything new since last night, deleted several msgs that had attachments, then started Tbird again.  No change.  Can't even get Tbird into the "Work offline" state because it attempts download-of-new-msgs immediately after being started.
  The only consistently effective way I have found to STOP the hung Tbird is through (Classic) Task Manager's "Processes" list, which usually shows five or six "thunderbird.exe" instances.  After selecting whichever has the largest memory allocation I click on "End Process."
  This all "feels like" a bollixed internal state.  Does Tbird store internal-state information in its own file, or is it buried in the Registry?   If I attempt restoration from a backup, which files are needed; or is that unwise?
 I see there is a mid-April update available to 115.10; would installing it reset current messed-up internal state, or will that already messy situation prevent the update?   Is there any risk of losing my Inbox, Sent, etc contents?

Thanks!!!

Using Thunderbird version 115.11.0 (64-bit) with Windows 7 OS and THREADING TURNED OFF.

When I receive a second reply to an email I've sent via one of my email service providers that uses an outlook365 server, my thunderbird view hides it beneath the first reply unless I manually intervene by clicking on the "greater than" sign associated with the first reply. When I do click on the first reply the greater than sign spins clockwise 90 degrees and the second reply appears below the first as if it were in a subdirectory.

The above behaviour is very inconvenient because I am prone to missing the second reply and have trouble anticipating its existence. Admittedly the unread second reply does change the first reply's text property to "bold" but I much prefer to see the new message without having to manually click on everything bold to check.

Another email service provider I use also has an Outlook365 server but second replies to emails are not hidden in its associated thunderbird inbox?

Can anything be done in thunderbird to stop this "feature" or is it absolutely fixed by service providers?

One of my two gmail accouns has suddenly become impossible to access (cannot receive, cannot send). T'Bird produces an Authentication has Failed notification, after a Google Window headed "Sign in to Mozilla Thunderbird Email" which refuses to go away. Clicking on the 'help' or 'privacy' options in that google window produces no more than a blank window but then "Sign in to Mozilla Thunderbird Email" reappears a few minutes later. My other gmail account doesn't have this problem, so I assume it's not gmail but it's T'Bird.

What's going on?

(BTW signing into this Support resulted in an email "New sign-in to Mozilla Support" warning "New sign-in to Mozilla Support to Firefox on Windows 10". Trouble is, I'm on Windows 11. Trivial maybe, but telling maybe.)

I have Thunderbird installed on my laptop running Fedora 40 with Gnome on Wayland. I have two monitors with different resolutions.

The laptop monitor has a resolution of 1920x1080 whereas the external monitor has a resolution of 1360x768.

Thunderbird display fine on the main monitor, but when I move it to the external display, everything becomes huge and unusable.

I don't want to scale things in such a way that I have the opposite problem, that is things are way too small on the laptop monitor. Is there a way to have Thunderbird scale properly on the external monitor to have it maintain the right proportions on both monitors?

I am migrating from Thunderbird to Office 365. I have moved the email by putting the Gmail details into Office 365. However could you please advise how I can migrate Tasks , Calender and Contacts from Thunderbird to Office 365 without having to pay for an Mbox to pst conversion tool.

External request to provide email content and send automatically, such as HTTP GET or POST similar to restAPI to do stuff on thunderbirds application for automated tasks, like opening emails, send email.

I updated Thunderbird to version 115.11.0 (64-bit), in the old version that I had when I clicked on an email with threads in a closed state, I could see in the email display box the initial text of each email in the thread with the sender's information and more, in the new version I don't see anything, the display box remains blank. Is this a bug, or do I need to change it in the setting?

Since Thunderbird was upgraded to 115.10.1 (64-bit), it now fails to send SMTP messages with the following error.

Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP) ***.mail.pairserver.com was lost in the middle of the transaction. Try again.

This affects all six(6) accounts in Thunderbird, all of them can receive and edit e-mail messages; however, all of them fail to send e-mail messages.

Prior versions of Thunderbird have worked with this configuration for many years.

Other e-mail clients such as Evolution do not have this issue and I have confirmed with my provider that Thunderbird is no longer sending e-mails.

Any thoughts on how to roll back Thunderbird until this issue is resolved?

Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) mail.cp.co.id failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again.

Thunderbird keeps suggesting to use the Filelink feature for sending large files. And I am quite on board with that idea. However, the only way I can officially share large files with the industry partner is a Kiteworks platform, that is configured to only allow SFTP and the webclient.

When clicking on "Find more providers", the only provider that isn't specific to a business like Dropbox is Webdav.

Is there any way to use an SFTP server for Filelink?

Good day,

I am encountering an issue with opening messages through the global search feature. Despite being able to locate the specific email, clicking on it does not display anything as depicted in Figure #2. I believe the email is stored in one of the folders.

I would greatly appreciate your guidance on how to properly open messages using the global search feature in order to reply based on the original correspondence.

Thank you. May

Hi, just upgrade to Windows1 and did a new installation from Thunderbird. latest version 115.11.0 (32-bits) But the new messages are almost directly market as read even with setting mark messages automatic as read set to no? On a other pc with Windows11 I had the same problem with the 64bit version but going to the 32bit version solved the problem. Any Idea how to solved this problem? Regards Karina

this interface uses pop3

When emails are pulled, I can see that it pulls, let's say, 50 messages, the notification shows 25 new messages but the inbox only shows 10. I have looked everywhere for the "missing messages" but don't see them anywhere. I have also had some people tell me that they sent an email response (so they were not entering the email address) and I don't see it.

What could cause these differences?

My email for my domain (Gailfisher@Resourcesforchange.com) hosted by GoDaddy. Has been working correctly for years, but now when trying to send from TB, I get a message to enter password that does not work (it does work on my webhost's platform). Using Windows 10, TB version 115.11.0. BTW, I have another email via AOL that is working just fine on TB. I tried Safe mode -no go I tried following GoDaddy's instructions for IMAP but also did not work. FYI The GoDaddy help desk said: "Please match the server settings with the below server settings. Username Your email address Password Your email account's password Incoming servermail.[your domain name] Incoming ports IMAP - 143 POP - 110 Outgoing servermail.[your domain name] SMTP (outgoing) ports25 (587 or 80 might also work) IMAP use port 143" I tried setting up a new account in TB using email adddress and a new username, but that created the same problem. Here are the relevant screenshots. Thanks for your help!

I am currently using T-Bird 115.11 on Windows 10. Not that it matters much, because I have had this problem continually for years with various editions of Thunderbird on Win7 as well. Often when I open Thunderbird, I discover it has created hundreds and even thousands (today 65,000) duplicates of emails in various mailboxes. This has nothing to do with downloading. The emails in question were downloaded weeks or even months ago, and I havev't accessed them. Another problem is that Thunderbird creates emails dated in 1970, even before anyone thought of the internet, let alone PCs or emails. Why is this happening? How can I prevent it?

Hello, I recently installed Ubuntu 24.04 with the version of Thunderbird (115.10.1) supplied with the distribution. I can no longer display mail saved as .eml in a remote folder (sftp). Thunderbird opens, but the mail window is empty. If I ask for the source code, this message appears:

Unable to read file at address view-source:file:///run/user/1000/kio-fuse-ouSeRu/sftp/myuser@myserver/mymessage.eml?type=application/x-message-display.

If I open from CLI I get this message :

JavaScript error: chrome://messenger/content/aboutMessage.js, line 218: NS_ERROR_FILE_ACCESS_DENIED: Component returned failure code: 0x80520015 (NS_ERROR_FILE_ACCESS_DENIED) [nsIMsgDBHdr.mime2DecodedSubject]

If I open the save file with a file editor I'm able to see the source code.

Could you please help me? Thanks