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Dear Sir or Madam,

I have just migrated Thunderbird to my new CUBI desktop running Windows 11. I get security errors when I launch Thunderbird. My email provider The Messaging Company advised me to change server settings, which are now shown in the Troubleshooting Information page as account1 (pop3) pop.themessagingco.com.au:995 SSL/TLS Normal password smtp.themessagingco.com.au:587 STARTTLS Normal password true.

On launching Thunderbird I get the message Secure connection failed live.mozillamessaging.com uses an invalid security certificate. The certificate is not trusted because the issuer certificate has expired. Error code: <a id="errorCode" title="SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE">SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE</a>

   This could be a problem with the server's configuration, or it could be someone trying to impersonate the server.
   If you have connected to this server successfully in the past, the error may be temporary, and you can try again later.

Or you can add an exception…

AND when I attempt to send an email I get warning that the SMTP server does not have a valid certificate. If I ask, in either case, to "Get Certificate" the response is that the site attempts to identify itself with invalid information.

I have "tried again later" over two weeks, and nothing has changed.

The Messaging Company is a fairly large email provider: it seems strange that its security is incomplete. However, I am not happy to just set an exception and over-ride these errors without doing all I can to check that there is not something screwy going on. I really value using Thunderbird, and The Messaging Company's advice that I should just use webmail is not at all satisfactory: I keep everything on my computer or backed up to a portable drive here.

Please: is there anything I can do or should know to fix this problem?

Best Regards, Margaret Mackisack

In Thunderbird, I would like to use Cards View, and sort each folder in my email account according to desired 'Sort by' settings (namely, sort by date in descending order and use the 'unthreaded' option).

I cannot locate a setting or an option to apply the desired sort settings to all folders in my account. Rather, it appears I must manually apply these settings to each folder, which is tedious given I have a large number of sub-folders in my inbox folder.

Is there a way to apply the settings for one folder to all others, or to change the default settings for each (existing) folder?

AOL emails won't download to TB. POP. Spent hour and a half with AOL help, reset password, checked everything, got recent emails downloaded, but still can't connect for new mail. 'Server Error" " Log-in Failed" etc. Sending mail no problem. They say TB issue. Sudden stop 6/21/24. Mozilla help site directs me to find things on PC that I can't locate or understand. Not very tech-savvy, pretty frustrated.

Hi I am dying to convert my thunderbird email into a kanban board in thunderbird and then access the emails there as I need to work with them. This will allow to automatically see which emails are still to be done etc but in a very visual way instead of just scrolling through my email tags.

Does this exist and if so please how do I find it?

if it does not exist could the developers please kindly consider adding it into future thunderbirds?

to select two or more messages on the message pane, one method is to hold down the CTRL key and left click on the messages you want to select. This has stopped working on my Thunderbird. When I select a message and then go on to select the next message, the first message I selected is deselected. So I can only select one message for an operation, e.g. "move", "delete", rather than a group of messages.

When I try to forward an email, I get the response: Sending of the message failed. An error occurred while sending mail. The mail server responded: Please ensure your email address and authenticating user match when sending messages. Please verify that your email address is correct in your account settings and try again.

The above response was when I tried to forward to another account of mine - both from comcast.net

I have been running Thunderbird for almost seven years now, and these behaviors have persisted since day one on my laptop and desktop computer. First, I have five accounts set up. I am running two add-ons (Provider for Google Calendar, and Quicktext). I am currently running a snap version 115.12.2 of Thunderbird on both machines and they both are running Ubuntu 22.04 LTS. Plenty of RAM and plenty of free disk space.

Here are the two issues...

1. More often than not, when an email comes into one of the inboxes and I am viewing the unified inbox there are two copies of the same email. If I switch back to the actual inbox of the account it only shows the one. This is very aggravating and when you start trying the delete emails from the unified inbox it gets all hosed up and I end up having to go to each individual mailbox to delete the messages.

2. This somewhat relates to issue one... Sometimes when an email is deleted from the unified inbox, a blank record remains like in the image. This shows only one but sometimes there are multiple ones. Of course, if I go to that message's inbox it is not there.

I have tried all the common things like deleting the index files to let the indexes rebuild, comparing folders etc., and again, this has been a persistent problem since day one. Any insight or solution would be greatly appreciated.

Thank you! Mike

Got Thunderbird on 2 machines and both have the same issue. I did try running only one at a time and still I cannot fix it.

On a Yahoo! mail account I deleted a "Draft" folder and it was sent to Trash. If I empty the trash it's gone until I either click Subscribe... and refresh the folder list or reopen TB. Then the folder comes back into Trash. I can't get rid of it.

I logged into the account via their web-based interface and checked my folders. The folder I deleted is indeed no longer there. Not in Trash. Nowhere.

I'm not referencing it in the account either. The option to save drafts is set to the "Drafts" folder, not the "Draft" folder.

I configured the folder properties to be neither subscribed nor offline. I then went to "server settings" and checked "show only subscribed folders" and unchecked "server supports folders that contain sub-folders and messages".

I shut down TB and relaunched it. Folder still comes back. I then shut it down again and deleted any references from the profile's folderTree.json, folderCache.json and the corresponding .msf files. I start TB again, folders still come back.

Then on two AIM accounts I have again phantom "Draft" folders in each. They're unchecked from sync and offline availability. Again I go to "subscribe..." and uncheck them. They don't disappear. I have "show only subscribed folders" checked and still the folders show. I then click Refresh in the subscribe dialog to reload the folder list. They're all checked again.

How do I get rid of these folders? Particularly bewildering is the Yahoo! case where I've explicitly told TB that the account server does not support folders within folders, I don't understand how it can read anything client- or server- side and still reach the conclusion that it needs to restore a "Draft" folder in Trash.

These issues are happening exactly the same on 2 different Windows machines both running TB, affecting the same accounts.

I have not been able to receive my att emails since 6/15/24 with my desktop using Thunderbird.. I do receive prompts "login to server inbound.att.net with user name ckfischer@att.net -- FAILED - inbound.att.net and outbound.att.net is not working thru Thunderbird.

I have contacted AT&T and have access thru the browser for this account as well as on my phone, and they have not made any changes. This seems to be an server issue with Thunderbird. Please help - ckfischer@att.net THANK YOU -

My Thunderbird Version: 115.12.2 (32 Bit)

Microsoft is changing the authentication method for outlook mail to OAuth2. I follow the guide here,

https://support.mozilla.org/en-US/kb/microsoft-oauth-authentication-and-thunderbird-202

And I get to this screen - but my version of the program does not have OAuth2 as an option (see attached image).

Thanks for the help.

When I restart Mozilla Thunderbird, my S/MIME certificate preferences under Account Settings seem to break.

When I initially select a certificate, both the common name/certificate name and the certificate fingerprint appear in the interface (see Working Settings.png). However, after restarting Thunderbird, only the common name/certificate name appears in the interface, and I cannot use S/MIME to sign messages (see Broken Settings.png). When I attempt to do so, I receive the following error message:

Send Message Error Sending of the message failed. You specified that this message should be digitally signed, but the application either failed to find the signing certificate specified in your Mail & Newsgroup Account Settings, or the certificate has expired.

To be clear, Thunderbird has no problem finding and using the certificate right after I set it—the problem only appears when I restart Thunderbird and the appearance of the certificate in the settings changes. The certificate does not expire until April 2025, so this is not the issue. The issue also occurs with another account using a different certificate that is also unexpired.

I am using Thunderbird 115.12.2 (64-bit ESR) on MacOS with Apple Silicon.

I composed an outgoing email message that I wanted to keep for future use, and saved it as a Template. That not only saved it under the unified Templates heading, but created a second appearance of my main email account with its own Templates subfolder. At that point I decided I really didn't want to keep it after all, so I deleted the message, but the second Templates folder didn't disappear; its still on the tree list as an empty folder. Right-clicking that folder doesn't have a Delete function, but it does present a Repair option, but running that doesn't help. How do I get rid of that unneeded individual email account listing and the empty Templates folder?

I just added [and "Apply View"] to this question. -mr

Does "Apply columns" work in Tbird 115.12.2 (64-bit)?

I searched 'Thunderbird Solutions' for "Apply columns", then read several of the 156 results, and read the Help Article "Message List Columns" ... but the results were [imo] not encouraging :-(

Does "Apply columns to" really work as described in Help Article "Message List Columns" ?

Is "Apply columns" a known flakey feature ??

Have I got a corrupted profile ???

Or ????

Thank you, --Mike Ramey

Suddenly today, about 1/2 to 2/3 of the emails that have been in my inbox are unreadable (see font below). I tried doing the Properties>Repair but no change.

Server Type: Owl Server Name: outlook.office365.com Thunderbird: 115.3.1 Windows 11 PC.

Perhaps related or not: today the Inbox folder didn't display in its usual location (instead of displaying directly under the email address, it was was down after templates, deleted, etc). I dragged it up where I wanted it. But now many of the emails are unreadable (but not all of them).

Any suggestions?

@ØEãC¼Ò?@bŒæ?¬Ò?@È:ðÇ”Ò?@"?÷HjÒ @Oß™ñ\Ò?@Cêç1LÒ?@&ýUm6Ò?@8ÑÖ?Ò?@1M›?îÑ?@®¶Ì?ØÑ?@n1ãʪÑ?ÀÊ:qzŒÑ?À!1?€ŠÑ Àeð2–ˆÑ À#þ÷â~Ñ?À…6 evÑ ÀPíRdjÑ?À†*ߣ`Ñ À·??9TÑ?ÀNÁw?JÑ?ÀÖƒ(ˆ>Ñ?Àý?¸ú:Ñ?À¢ë÷s8Ñ?À¨Ò‹Ä4Ñ?À\%Ìå.Ñ À{,?¡*Ñ ÀeËâÕ"Ñ?ÀÔ&?R?Ñ?ÀmÃM‰þÐ?À¯ù´æÐ?Àý?ˆ<æÐ?À;d?·ØÐ?ÀÉ(?qÔÐ À$¨Q~¶Ð À~×ïU®Ð À?"¾x¦Ð À<Á~§žÐ?À„ÙEÙ”Ð?À??IÐ ÀÈy‰ zÐ?À‡Ä{pjÐ À9Ò??hÐ

I have two problems tha occur when using the Unified Folder tree view.

1) The view of Local Folders that appears in the Unified Folders view (which I use and require) has lost all subofolders except for Outbox. In particular, it does not show Sent Copies which is folder I rely on.

However, Sent copies and several other subfolders for Local Folders are visible in the All Folders View. As a workaround, I am currently set the tree view to show both Unnified Folders and All Folders to have access to Sent Copies in local Folders...but this is a pain because it means I have to scroll far, far, down in an excessively long folder tree to find Local Folders/Sent copies.

So the solution I'm seeking to number 1: Restore Sent Copies, and other normal subfolders, to the view of Local Folders that appears in the tree when the view is set to Unified Folders. (Closing TB, Deleting the Smart Folders from the Mail folder and re-starting TB does not solve or have any effect on this problem. See my conjecture at end below).

Second problem is: I'm seeing a big handful of duplicate emails showing up in the Unified Folder Sent folder. I've cleared up most of this problem by deleting Smart Folders from the Mail Folder in the profile...but this repair fixes most, but still permits a handful of duplicates to remain, especially in the Sent folder. I have been running TB happily for maybe 10 years. Current setup is Windows 10 on a Lenovo desktop....my two mail accounts are Hotmail and Gmail.

I'd be very grateful for assistance with these problems.

My conjecture about these problems: They arose in past month while there were a lot of starts and stops and edits of settings for TB in past couple months in order to keep TB connecting to Hotmail. That finally got solved a week or so gao... but my conjecture is that some program crashes thar arose while editing TB sedttings may have contributed --at least to the missing subfolders n the main or Unified view of Local Folders.

I have been trying to get help with Thunderbird for an issue with not receiving my emails and not being able to send any emails since June 12th of 2024. Nothing has worked with the little support from this site. Please help!

I'm currently using Thunderbird 115.7.0 (64 bit) portable version on Windows 10. For many years I have ordered my emails by using subfolders, with a large one called 'Archives'. When another folder such as 'EE' becomes non-current I simply drag and drop it to the 'Archives' folder. However now the archives folder is so large and irrelevant that when searching for emails, I get thousands of results from up to 15 years ago. So, how can I archive emails so that they are easily accessible, but so they don't come up in an all encompassing "All folders" search?

Outlook says that it will no longer let third party mail apps like Thunderbird to access Outlook email as of September 16, 2024? What do you recommend?

"Action Needed – You may lose access to some of your third-party mail and calendar apps

Update your sign-in technology before September 16th, 2024 to maintain email access.

The safety and security of your information is top priority for Microsoft. To help keep your account secure, Microsoft will no longer support the use of third-party email and calendar apps which ask you to sign in with only your Microsoft Account username and password. To keep you safe you will need to use a mail or calendar app which supports Microsoft’s modern authentication methods. If you do not act, your third-party email apps will no longer be able to access your Outlook.com, Hotmail or Live.com email address on September 16th.

What do you need to do?

If you are receiving this email, you are currently using an email or calendar app that uses a less secure authentication method to connect to your Outlook.com email account. You will need to upgrade your third-party mail and calendar app to a version which supports modern authentication methods.

Microsoft provides free versions of Outlook for your PC, Mac, iOS, and Android devices which can be easily downloaded and connect to your email account. Using an updated version of an Outlook application will ensure you are connecting in the most secure way.

How can you set up your Gmail, Apple Mail, or other third-party mail application?

Various non-Microsoft applications will have their own steps for connecting to your Outlook.com email account using modern authentication methods. See our help article - Modern Authentication Methods now needed to continue syncing Outlook Email in non-Microsoft email apps. However, you may need to contact the creators of those applications to provide you with instructions. In many cases, simply removing and re-adding your account with the latest version of that application will configure it to use modern authentication methods.

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From Sept-16-2024 Microsoft will deprecate Normal Password and require OAuth2 authentication on its email accounts accessed from Thunderbird and other clients.

I'm trying to convert my hotmail accounts on Thunderbird to OAuth2 authentication.

Server Settings Authentication can be set to OAuth2 because OAuth2 is an option in that menu.

But SMTP Server Authentication cannot be set to OAuth2 because OAuth2 is not an option in that menu.

Both Connection Security methods ( Inbound and SMTP ), are set to STARTTLS.

See screenshots, thank you.