Forum der Gemeinschaft Thunderbird

I'm getting Spam Emails from about 10 regular Spam Accounts and I wish to Universally Block them by adding Them to my Filtering Lists. I'm using the * Character as a Universal Place Holder for the *@*.com, *@blah.blah.ca or com. The Filter works one Time then stops working for any fresh Spam. In other words, the Filter doesn't Filter any new Spam from these Addresses. Why?

OPERATING SYSTEM Windows 10 Professional (x64) Version 22H2 (build 19045.6466) System Model : HP HP ProDesk 600 G3 DM SYSTEM MODEL HP HP ProDesk 600 G3 DM Enclosure Type: Mini PC PROCESSOR 2.80 gigahertz Intel Core i7-6700T 256 kilobyte primary memory cache 1 megabyte secondary memory cache 8 megabyte tertiary memory cache 64-bit ready MEMORY 15.88 Gigabytes Usable Installed Memory BOARD HP 829E KBC Version 06.29 STORAGE 4.51 Terabytes Usable Local Storage Capacity 3.59 Terabytes Local Storage Free Space

• Waterfox - 6.6.12 (64-bit) • Thunderbird - 140.13.0esr (64-bit)

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A few days ago the left (file) pane went from

- InBox
- Drafts
- Sent
- Junk
- Spam
- Trash

to

- InBox
- Drafts
- Sent
- Spam
- Spam
- Trash

I attempted to change the first "Spam" back to the original "Junk"; didn't work. Have no clue why TBird decided to change the file names on its own.

Any information/direction(s) about how to correct this back to the original?

Thank you / appreciated. Nels

I use to be able to mark email as junk by right click then K then J. The junk option is not there any more but spam is. The problem is both add star and as spam are both S, so K - S does not work. Need to change one of them to a different letter.

Since yesterday (27 Apr 2026) any and all mail that comes into Thunderbird gets marked as SPAM. I searched online and found people saying that I could reset the junk training filter, so I did this, but incoming mail was still marked as spam. The next suggestion was to delete the training.dat file. Did that, restarted Thunderbird and incoming messages are still marked as spam. The last suggestion was to turn off adaptive junk mail controls. Didn't want to do that because I assumed that it would let spam through. Nope. Turned it off, restarted Thunderbird and two emails from my work came in and got flagged.

I'm running version 140.10.0esr (64-bit) on Windows 11. I am using IMAP to connect to the mail server but it's not running any spam detection software (like Spamassassin). I know this because it's my server and even if it was, no updates have been preformed since the first of this month and this just started happening yesterday. Combine this with the bug that Thunderbird notifies me of incoming mail, even if it's spam (didn't post about this because there are plenty going back a couple of years), is starting to make me look for an alternative.

I recently added a email address to my thunderbird email and it brought forward a lot of messages from Yahoo that are spam. I would like to block them and instructions I have were dated 2016 from Mozilla. Is there a new instruction on how to block?

There was an earlier Case with the exact same name as what I named this case which was archived back in 2025. I have been living with this same problem since last year also. In the previous case there was reference to "downgrading" to an earlier version of TB, but there have been a bunch of updates since then so I doubt that would fix my problem because that earlier version is now over a year old.

I have one Gmail folder that correctly has one folder label "Junk." However, I have 4 folders that are AT&T related (2 from the domain "sbcglobal.net" and 2 from the "att.net.") For some reason when I set these folders up years ago they started out as labeled "Spam" instead of "Junk." Of those 4 folders 2 of them have the duplicated "Spam" folders, one from each domain."

When I go to Folder Properties I see "imap://XXXXX%40sbcglobal.net@imap.mail.att.net/Junk" on one of these Spam folders and "imap://XXXXX%40sbcglobal.net@imap.mail.att.net/Bulk" in the other. And the same "Bulk" vs "Junk" issue is in the other domain as well. All are named "Spam."

Can I simply delete one of these folders that are named "Spam" in each domain? Does it matter whether I delete the one ending in "Junk" or the one ending in "Bulk?"

Thanks.

All e-mails from Pay pal go into trash. Have marked as Not Junk but this has not helped. Needed e-mail from Pay pal today to pick up a click & collect order but didn't receive any e-mail. Tried to log in to Pay pal on Android phone not desktop PC as I usually do. Kept sending codes to my e-mail address to log in but I received nothing. Wasn't until I had come home and accessed Thunderbird on my PC that I found them all in the Trash. Luckily store gave me my order and I didn't have to go back.

Despite my marking messages several times as NOT spam, Thunderbird keeps on and on RE-marking them as spam. And the mails are coming from one of my own addresses, and they ARE in my address book!!!!!

There seems no way that I can stop the beast from misbehaving.

I had this issue some while back, then an update resolved it. Seems another update has brought it back.

Having just updated, still on ESR, I find that I now have 2 folders named "Spam", but in fact looking at the folder properties 1 is actually still "Junk".

The images explain it well.

As in the past, I'm unable to correctly rename the second Spam folder back to Junk.

It has to be the update that caused it (as previously).

When can I expect another update to resolve it?

Bonjour, Pourquoi actuellement tous les messages que j'envoie avec ma messagerie Thunderbird depuis mon compte FREE sont-ils identifiés comme spams par mes destinataires GMAIL ?

Good morning.

A few days ago the "Junk" folders in my Thunderbird accounts, without any action on my part, were suddenly renamed as "Spam" folders.

Anyone know why this happened?

Thanks

Hi!

I am using Ubuntu 26.04 with Gnome 50.1 (kernel 7.0.0-28-generic). I installed Thunderbird 1:140.13.0+build1-0ubuntu0.24.04.1~mt1 amd64 from source (140.12.1esr).

When I receive an email, I get a system notification where I have an option to "Mark as read" or "Delete". For most emails, if I click on "Mark as read", the email will be marked as read. However, Thunderbird has the feature to automatically put emails into Junk. And if I click on "Mark as read" for emails that are going to be automatically put into Junk, the emails will remain unread. It would be nice to mark the junk emails as read when I click on the button.

Thanks in advance!

I keep getting messages from 2 sites that give me a virus. Hoardpot AND contact@musterateam.com When I tried to unsubscribe it didn't work.

Tell me what to do please. Thanks

Using version 21.0 on Android 15 on a Motorola Stylus 5G 2024 phone. For the last week or so, selecting "Empty Trash" for my ymail.com account results in nothing happening. I have to log into yahoo.com via my browser and manually delete emails in the "Trash" folder.

‘spam filters do not work. After 18 years of putting up with it I want block senders and sender ip's WHAT IS UP? WHY DON"T YOU FIX THIS - Do I have to go to M$oft?????’ for ‘Thunderbird’

Addressing the problem, Practice Better says my acct is not blocked on their end. They say put

notifications@practicebetter.io in a safe senders list, but I can't find anything like that. How could I get my Thunderbird email acct to accept Practice Better's messages?

Thanks, Jane Kroll

When messages arrive in inbox and are marked spam they do not auto move to spam folder. I have to uncheck the spam icon and re-check it. Not until then will they move to spam folder.

Martha

thunderbrd version 153.0.1 64bit windows11 Spamfilter problem

my contacts are all in the personal address book convinced they get filtered as NOT SPAM, recently some addresses out of my adressbook get filtered anyway - weird an expert told me to setup a whitelist as a subfolder: I did but same prob... as far I know the address book works like a whitelist anyway, no success also not long ago thunderbird had an update - and it feels since the dodgy filtering started. Using thunbderbird for ages - never had that prob ever - till recent

Is there any known solution please ? Thanks & regards Jochen