Thunderbird Community Forum

I have been using Thunderbird for years with no problems. However recently, Thunderbird very often simply stops responding. Sometimes it just hangs up and sometimes the program bar at the top displays "Mozilla Thunderbird (Not Responding)". If I try to wait for it to respond, it literally hangs for several minutes before it begins to respond again, and often, it simply never starts responding again. It has simply gotten to the point where Thunderbird is practically unusable. All my other application software continues to work with no problems. It's just Thumderbird.

The version number in this submission may not be correct. I can't provide the real version number because of the hangups.

Any suggestions?

I am trying to set up a new email address with Thunderbird. I have copied all the imap and smtp settings from my old address in to the new one. It is now asking for a password but I have not been asked to set up a new password for the new address. Where do I go from here?

On 3 August, Thunderbird was automatically updated on my Mac Mini to Version 155.0. Ever since, all incoming mail is placed in a folder called Satellite Radio, and distribution to the proper mailboxes stops.

Starting today (September 3), ALL of my received emails are being put into the Spam folder instead of the Inbox.

FYI, I have been running Thunderbird (TB) for years and have not recently set up any new filters.

I'm currently running Thunderbird 64-bit version 155.0 under Windows 11 Home version 25H2. I am also running Bitdefender Total Security, but I have turned off its Antispam function, both under my usual Standard User account and the Admin account.

I have tried:

1. Going into TB Settings|Privacy & Security|Spam and clicking on "Reset Training Data." 2. After closing TB, I deleted the training.dat file in my TB profile folder and restarted TB. 3. Right-clicked on my Inbox and Spam folders and clicked on "Repair Folder." 4. Exited TB, copied my profile folder to an external HD, uninstalled TB and reinstalled TB after downloading from the official download site. 5. Rebooted my PC.

None of these approaches has worked to solve my problem.

Thanks for any help you can give.

Hi all I have recently installed Thunderbird on a PC that didn't have an mail program. Its Win 11 and includes Malwarebytes and Norton 360 for security Thunderbird 154.0, (64 bit)

I followed the set up as I have done many times before and previously had no problem. I am using Plusnet and have set incoming mail as POP3 on port 995. I have set outgoing mail to SMTP and port 465 ( plusnet recommended 587 doesnt work at all) I have set my login name and password. Security is SSL/TLS

Incoming mail is received normally Outgoing mail asks for my password as on attachment Entering a password doesn't work and results in another error message

Any suggestions? Cheers Keith Keith

Any suggestions

As of noon yesterday my Thunderbird gets messages, puts them in the trash, then the spam and then sends a message to "spam" at my email provider. Since noon yesterday, I don't get email messages. I don't know what else it could be. If I go to the webmail, I get messages, but as soon as I download them with T-bird, they are in the trash and then sent as a spam notification to my email provider. I really use t-bird a lot so I would really hate to stop using it, it's much more useful than the webmail. Thanks

PS. I use Linux Ubuntu

bonjour, J'ai installé un nouveau profil, mais j'arrive pas a utiliser l'icone -sélectionner messages à droite au dessus des mails- appliquer ces paramètres/la vue... Ca me serai utile pour simplifier et unifier mes affichages. Actuellement j'observe aucune changement, bug ou erreur de manip.

Good afternoon

I have been struggling to find some messages specific to specific dates and spend an awful amount of time tryomh yo access the correct one.

The solution proposed is a bit unclear to me, as it refers to "future folders". I need to unthread all my messages. Is this possible?

Thanks

PS The only version number i could find was for Firefox. There does not seem to be one for Thunderbird.

I have what should be a pretty simple question. 1. I deleted my Tbird POP acct because it stopped working. 2. I reinstalled it. 3. My saved mail folders were gone. 4. Is it possible to get them back? 5. * This question is for someone other than David. 6. I just want to get my old saved folders back into my reinstalled account. 7. It's been about five days since this all took place. 8.The version I deleted was a the previous release.

Maybe I accidentally made a setting, but if I go get email, it sends it to trash and from there marks it as spam and sends it to spam at my email provider. This just started when I tried it this afternoon. I think it was OK in the AM. I use Linux Ubuntu. It moves all emails to trash and then sends them. I just looked at my message filters and they look normal to me, I do have something called SpamAssasinYes, which I remember from years ago that looks at the whole complete header and sends an email to all the providers in it telling them that their user is using their server for spam. Maybe that has changed somehow, but I forgot it was there because it has been there for about 20 years. Should i just remove all those filters and see what happens? I need some guidance. thanks

I posted a question on this forum that I want to delete. I can't find a way to do that. Is there some way to do it? This question isn't really about performance" of T-bird, but about this forum but I was required to make a selection. . . ..

As of noon yesterday my Thunderbird gets messages, puts them in the trash, then into the spam and then sends a message to "spam" at my email provider. Since noon yesterday, I don't get email messages. If I go to the webmail, I see messages, but as soon as I download them with T-bird, they are sent to the trash and then sent as a spam notification to my email provider. I really use t-bird a lot so I would really hate to stop using it, it's much more useful than the webmail. Thanks

PS. I use Linux Ubuntu

I have Win11, Thunderbird Windows MSIX packagethunderbird-MSIX - 1.0, and several accounts (The box below won't take anything past "Thunderbird Window.")

I'm looking for some way to make a different ring either for one of the accounts or for certain domains or for a subfolder -- any way that I'll know when something comes in from specific domains. The special ring(s) can be for each of the two domains or both of them. Can that be done?

I downloaded the version on the site but I can't get it to accept my password all I get each time is this at the top of the box

Component returned failure code: 0x804b000a (NS_ERROR_MALFORMED_URI) [nsIIOService.newURI]

Just how am I supposed to understand what that means. I would be grateful for any help you can give I've been using Thunderbird for over 25 years without any problems, I had to reinstall Windows and now I've got this problem.

This morning Thunderbird asked me to update which I duly did. Once done all messages started disappearing from inbox. Eventually I found them and moved them back to inbox only for it to happen again

Have now tried 3 times, same result, every single email from Inbox keeps being moved to deleted in Local Folders

All new emails that have come in since appear for a micro second in Inbox before being moved to Deleted

This is obviously not a great situation to put it mildly and as it has never happened before and started straight after this morning's update I can only assume that the update is to blame

Any help would be greatly appreciated

Brenton, GPS Imports Team

Helping a friend with her HP-i3 PC running Windows 11 that I setup in March of 2025. It was a new PC purchased from BestBuy in March 2025.

I had to restore the image backup of her C drive that I did in March 2025 because of a Windows problem that I wasn't able to resolve. Now that problem is resolved but Tbird has the old profile folder without her new email contacts. (Unfortunately, I did not remember to use Tbird to save a backup of her profile folder before doing the restore.)

She has a recent image backup so I can extract Tbird's profile folder from that backup. What would be the correct procedure to replace the current profile folder with the one extracted from the recent backup?

(don't currently have access to her PC so don't know the version number of Tbird currently installed)

I have "Allow remote content in messages" turned off. However I receive many messages for which I wish to allow it for that message. I do so and it works fine.

What I would like to be able to do is to have TB learn the message senders for whom I have allowed remote content so I don't have to click it every time. Is this a feature that is available that I am missing, or is it just not possible?

If not possible, please advise as I will submit for an enhancement.