Ngwaahịa Niile Community Forum

Been using and loving Thunderbird for over 10 years - now on 115.18.0 (32-bit) with 8 different email addresses, all on 'ionos.co.uk'. My AV is Norton and seemed to 'upgrade' to 'Norton for Gamers' 2 days ago. Since then attempts to read messages get a pop-up window titled 'Add Security Exception' with text 'You are about to override how Thunderbird identifies this site. Legitimate banks, stores will not ask you to do this. ' It gives location as 'imap.ionos.co,uk;993' then a line says 'This site attempts to identifiy itself with invalid information'. Clicking button marked View shows details that include 'Organisation: Norton Web/Mail Shield' hence my suspicion. I've had a lengthy call with Ionos support, very patient and helpful, checking things at their end, concluding nothing of theirs has changed and all is working correctly. I tried one of the addresses using their webmail, which worked perfectly. About the same time that this happened, I started getting pop-up messages from Norton when I started software programs that I wrote myself some years ago. That's never happened before! Tried reading Norton help pages but cannot get hold of a human. Has anyone else had this problem? Should I ditch Norton? Many thanks!

After updating to 137, trying to send emails times out for my GMX email, however for Gmail it still works fine (I attached the console output in safe mode). I am not using a firewall or a proxy and the problems persists in troubleshoot-mode. I am using Manjaro with Kernel version 5.10.234-2.

To recap: I have been using Thunderbird for years. It receives 5 email channels and was working fine up until a few weeks back. I can still use it to send on that channel just not receive. Since it is Imap I can access it ok on the network providers web site (Talktalk) I can also receive it ok on an Amazon Fire tablet. I have tried turning off aspects of my antivirus (Bitdefender) but it doesn't seem to help. At the bottom edge of the Thunderbird screen I can see various sets of words which seem to indicate it is accessing the Imap channel just that nothing appears. In case it helps the email address is of the form xxxxx.xxxxx@lineone.net. Someone helpfully provided a list of suggested problem areas but they either don't apply or they seem to be ok. Regards, Roger

Thunderbird email is not displaying "some" individual emails in pop-up email windows. I get a list of emails that have come in, but when I select some of them to see their contents, they show a blank box with absolutely no content. This only applies to some emails, not all. The others display their content with no problem. And it's not always the same senders that exhibit the problem. It is totally random. I want to fix the problem since I cannot read all my emails. I did a "repair" on Thunderbird last night, but that scrambled everything, so I had to restore my PC to its last backup date, which was fortunately the day before.

I've been using Thunderbird for years without issues. A few weeks ago, Thunderbird on two of my computers, (a Win10 laptop and a Win11 desktop) stopped receiving email, but were still able to send it. After a couple of days, normality resumed and both computers were able to receive email again, without any corrective measures taken by me. However, about 5 days ago the same thing has happened again, but this time, the desktop has resumed normal function but the laptop has not. The error (both times of failure) is shown in the image. TB on the Win10 laptop is configured POP3. On the Win11 desktop IMAP.

Email works perfectly from web interface, and so I'm very reluctant to change the password on the server in case I get locked out of the web interface, but perhaps this might be the step to take? I uninstalled TB using RevoUninstaller to completely wipe TB from the computer, including any registry entries. Installed TB version 137.0.2. Still the issue persists. I'm certain that the account settings are correct, so the issue is a complete mystery to me as to what is going on here. I would very much appreciate any help to resolve this issue please.

Hi, I have a weird problem on thunderbird. See pics: the incoming message number show me 10 messages but only 4 are visible. do you know how to repair this wrong number please? (last version updated) thanks regards

While looking for another setting, I noticed that a setting about how T-Bird handles spam mail. I have it checked. Today, I received a DOOZY of a spam mail, but Thunderbird didn't flag it. It was so obvious spam, as it asked for credit card, banking, automobile license! Also, the Subject asked to update payment info, but the From field wasn't that company.

Taskbar icon shows incorrect number of email. Question: Anyone else having this issue? Any fix? Today the Sent - my email address taskbar button shows 98 In Thunderbird I have only 2 new sent messages from 4-18 and none for 4-19. I have 9550 overall.

My Inbox on various days show 75 or 14 or 8 BTW I never get more then a few messages at a time so seeing 75 or 14 or 8 would never be correct.

I go to download and none show up. I have the number of Total message count already downloaded displayed and the number does not change. Any new message would also be in Bold.

I disabled the showing on the Taskbar and as an example when I go to check messages and it says 1 of 1 yet none show up.

I have even moved all my Inbox email to a subfolder and no new email will show up in the Inbox when the program says I will have lots. I checked my domain cPanel email and no new email either.

Anytime I use send a file to the email program or use any external process to set up an email from thunderbird, thunderbird will not send the email and a reboot is required.

I know this worked in the past and lately, it doesn't anymore. I have multiple domains and many email addresses coming into my account. There was an extension called Virtual Identity, which would fill in the From field with the Original email address that the email was addressed to.

This was no longer needed because the feature was added to the base code. It worked for years and in the last year or two, it stopped working.

For ex, the email was sent to bob@ex.com, but my account identity is fran@frog.com, when I hit reply(all) it should fill in the FROM field with bob@ex.com, not my account identity. This used to work great, but now it just fills in the account identity instead.

To rule out old settings, I started fresh and it still doesn't work.

I do have “Reply from this identity when delivery headers match:” set to *@ex.com and it still doesn't work.

I am currently running 115.18.0 on linux, but this has been over many versions now.

Did they kill this feature?

Thanks.

Went with a new ISP. Thunderbird was not working right. After spending hours trying to get it to work, backed up as instructed, uninstalled and reinstalled the latest version of Thunderbird. Still have problems but the main issue is not being able to send PDF files or even something scanned from my printer. The error message I keep getting is: "There is no email program associated to perform the requested action. Please install an email program or, if one is already installed, create an association in the Default Programs control panel.". I have gone into Default Programs, associated Thunderbird as my email client. Doesn't work. Went into Regedit and double checked that Thunderbird is my email client. Doesn't work. What do I need to do so that my Windows 10 Home PC, Version 22H2 can send PDF files. All other regular emails (in/out) work fine.

Hello, sorry for the question but I can't solve it alone

My issue : I think my emails have been deleted. Its something like 500mb of content.

I'm on Windows 10; on 128.9.2esr version for Thunderbird.

You see how the path is structured: account@mail.com/inbox/... I moved my mails folders into the folder account@mail.com (instead of account@mail.com/inbox/) Closed thunderbird Restarted thunderbird

All folders at account@mail.com/ disappeared.

I tried to find them. I created a folder named "TestAccountFindThunderbird" I moved account@mail.com/inbox/TestAccountFindThunderbird into account@mail.com/TestAccountFindThunderbird Closed thunderbird Restarted thunderbird "TestAccountFindThunderbird" disappeared as well

and making a research on C:\ drive I managed to find TestAccountFindThunderbird.msf inside the folder at C:\Users\<my_account>\AppData\Local\Temp\MozillaMailnews

At the same place I found also the other things that disappeared from my mail account Health.msf, Apple.msf, Work.msf, Insurances.msf, Bank.msf, ... But they are all .msf files...

I saved them into a backup folder. Then I copy pasted all that content from backup to INBOX.sbd but when I open Thunderbird in a blink they are all removed. I guess its because they are .msf and not actual content.

1) Why when I move a mail folder into account@mail.com/ then the folder disappears/is deleted? 2) Where are my emails? And how do I reimport them? 3) Why do I have traces of them into AppData\Local\Temp\MozillaMailnews?

Thanks in advance

I am running Windows 10 Home edition. My email account is for a domain I own on Dreamhost. When I click on a subfolder I get the message "Server imap.dreamhost.com has disconnected. The server may have gone down or there may be a network problem." I have my firewall set to allow thunderbird.exe traffic to pass. Any suggestions. I don't have this issue running K-9 on my Andriod phone. (I am reluctant to switch to Thunderbird on my Android phone until I solve this on my PC.

Any suggestions?

I have been using Thunderbird for several years now and am currently using Thunderbird Desktop Version 128.9.2esr Released April 15, 2025, on a MacBook Air Retina 13", using OSMac Sonoma 14.7.5. Office attachments cannot be open directly from an email, but have to be detached first. I have had this problem for some time and I have looked at other posts about this and followed instructions, but the problem persists. Thought I would try again to sort it out. Any help to resolve? Thanks

Dear Community

i use the Thunderbird app for Android (Samsung S23+ Android 14, OneUI 6.1) to retrieve emails from a mailbox (IMAP). That works. Now I would like to automatically forward incoming emails to other email addresses according to filter criteria.

I have filters for this in the desktop version. But I can't find them in the app. And the filter on the PC only works when the PC is running. Which it shouldn't. The forwarding should be done in the Android app. There is no access to a webmailer.

Many thanks for your help and happy easter, Michael

Sometimes when I get an email these weird characters show up. I did make a search for it and it seem to be some formating for text. I guess this is somthing that need to be addressed by the dev team?

Since I updated to 128.4.1esr filters no longer work good: some emails are left in the main folder and not transferred in the subfolder I'd like and I ordered via filter; other emails are duplicated in the main folder and in the destination folder ;moreover, if I try to modify a filter, the window is so big that the OK button slips under Windows 11 system tray and it's impossible to click; thw window is impossible to resize, nor I can drag it, so the OK button remains invisible under Windows tray bar. Thanks for your help.

My installation: Thunderbird Ver. 128.4.1esr ID build 20241101163316