Thunderbird Community Forum

[6/12/26, 10:49:22 PM GMT-4] Applied filter "Blocked Sender List" to message from The Home Depot® Consumer Credit Card <citi@info15.citi.com> - James, Don’t forget to use this special offer to get your Summer projects going! 🌼🌺 at 6/12/26, 10:02:27 PM GMT-4 deleted

[6/12/26, 10:49:22 PM GMT-4] Filter action failed: "Move failed" with error code=0x8000FFFF while attempting: Applied filter "Blocked Sender List" to message from The Home Depot® Consumer Credit Card <citi@info15.citi.com> - James, Don’t forget to use this special offer to get your Summer projects going! 🌼🌺 at 6/12/26, 10:02:27 PM GMT-4 deleted

The sent message is deleted but I get Filter action Failed.

There are certain emails that I receive that are *absolutely known* spam. I want these (but ONLY these) deleted as they come in.

I understand that one need to tick the "delete" box in Settings, but this seems to giver Thunderbird the right to delete anything that 𝒊𝒕 determines is spam. I don't want that. I want ONLY my own predetermined spam to be deleted.

And by deleted, I mean just that. Thunderbird just piles them up in the Trash folder, and this gets to be a big pile. Because Thunderbird makes mistakes, cannot just let it delete everything it determines to be spam, and so I have to go through this long list of junk in the Trash folder, which is annoying (because there's surely a better way that no one has implemented yet) and time-consuming.

I've made my own "delete" filter. It runs first (it's the first filter in the list), "before Junk Classification" and "Getting New Mail". Anything on this list should be deleted, because that's the ONLY action I have in this filter. If you're in here, you're gone.

Except your not. The filter is (for some reason) NOT run when new mail arrives. Instead, I have to open the filter, and choose "run on Trash folder". Then it works. But is THAT the design?!? Why is it not deleting arriving mail that meets the criteria?

There is also the problem now (as spammers have gotten more proficient) of the random character string preceding the @, followed by a domain name that you dare not mark as spam (for example, yahoo.com). These random characters are indeed random, and constantly changing, so you cannot filter on the address. But it seems to me some bright person might come up with something like "if 'known domain' is NOT preceded by 'known sender', delete". (This would require a user [me] to be very careful, or I could lose a new respondent who is not spamming me.)

But the point here is this: Over time, I have a great "delete" filter. Mail that this filter catches makes NO mistake. I want these messages (but ONLY these messages) to be gone when mail is retrieved. I don't want them in the Trash. And I don't want to have to take the time to run that filter on the Trash, because no one has created an extension that allows me to do this with a single click.

I would pay/donate, for this capability. But I can't bring myself to donate, or pay, when I have to go through a big Trash pile full of mail that, according to my filter, I should NEVER even see.

Other suggestions entertained of course.

But I'm spending too much of my life dealing with things that should be automated.

Regards,

Is the feature supposed to behave this way? I find this rather tedious. Am I missing something here?

Current behavior:

My installation does not seem to automatically execute spam filtering for unified folders or saved searches. As soon as I manually select one of the included folders within - e.g. an individual mail acccount's inbox - the algorithm triggers and everything works as expected, but only for the one folder I clicked. This leaves me with having to click through all my mail accounts manually to make use of the adaptive junk mail controls function.

Expected behavior:

Selecting a unified folder triggers junk mail controls for all the included folders and moves messages to the respective junk folders automatically.

I am trying to create filters for all the spam I have been receiving. It mentioned a tools menu for adding additional filters, but I am not seeing a tools menu anywhere,

Is there a spam file for thunderbird? I haven’t been able to find one. Xfinity has a spam box on my site. I had mail sent to me and could not find them on thunderbird or Mac mail but I Katerina found them in the xfinity spam folder..

A category (Daily Brain something) of emails that are clearly spam (you even think they are spam) are landing in my Inbox every day. I have my email set to not allow emails from any addresses that aren't in my book. If I follow their 'unsubscribe' link, I just get more of them. This is the latest one: ar849137@ocotille.com with a Reply To address of: 3527_rep_Y2pnZGVzaWduc0BlYXJ0aGxpbmsubmV0@ocotille.com Every one is different. Why are these getting through? Thanks Cary

Hello,

I have defined about 45 simple filters to get rid of spam. They are all based on keywords found in subject or sender.

All of them are enabled and set this way :

Apply filter when : _ Manually Run X Getting New Mail ( Filter before Junk Classification ) _ Archiving _ After sending _ Periodically, every 10 minutes.

Perform these actions : 1. Set Junk Status to : Junk 2. Move Message to : "super-junk" folder 3. Mark As Read

See example in attached image.

PROBLEM : They do not run automatically when new emails are received. But if I run each of them manually, they work.

QUESTION : What is wrong ?

Thanks !

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 noticed that my Thunderbird has two identical Spam folders. I deleted Thunderbird from my computer and reinstalled it but the two Spam folders are still there. When I right click either one there is no Delete option.

I was cleaning up my wife's email when I noticed there are a lot of messages unread and in the trash folder that ought not to be. I am wondering how to fix that for her. Example: some amazon.com emails about orders, or emails from favorite merchants or websites.

Guten Tag,

Ich hoffe Ihr könnt mir helfen.

Ich benutze Thundebird das erste mal und würde gerne wissen wo meine gelöschten Mails hin verschoben werden wenn wie auf dem angehängten Bild keine Einstellung vorgenommen wurde standardmäßig. Werden die Mails dann direkt gelöscht aus der kompletten Mail-Adresse oder bleiben diese irgendwo gespeichert?

Die Gelöschten Mails sind im Mail Konto nicht mehr auffindbar.

Viele Grüße

I recently upgraded to TB 128.14 Oesr (64, Win 10). I’m a bit conservative about upgrading anything – as upgrades often waste a lot of time – if not risk justified.

Basically, If it’s workin’ well enough (cost vs benefit) …… well … “don’t fix it” – even though … “if it ain’t broke, doesn’t mean it isn’t sub-optimal”. Here, it seemed worth the risk.

My prior TB version – nope, I don’t remember which it was (is that in a log?) incorrectly identified bookoo normal e-messages as “junk” (junk filter deactivated) wasting a LOT of my time to move them back to the “indox”.

It also – CORRECTLY ID’ed – a big lot of data sucking spam as “junk” (junk filter still deactivated) for my PUBLIC e-address (expected spam magnet) – alerting me of the quantity of (expected) spam I was actually getting (my free Omaha steaks are on the way).

After upgrading (to TB 128.14) I don’t get any, well much of that spam any more (got a couple today) – hurrah (maybe)!! I don’t see it any more. It is gone completely (mostly, ostensibly) and the problem is – I do want to SEE it – all of it – in a “spam folder / directory” nd not in trash– wherever it is – to make sure it is NOT mis-ID’ed as spam – when actually an important message maybe telling me I’ve won the FIFA email prize!

So … “the game is a’foot! Holmes! How can I track down that missing spam – to see ALL of it – to verify it’s identity?

I suspect my hosting company – Hostinger – may be involved – as I did verify, previously, with my previous TB version – that they COULD see into my TB account structure. Can’t find it now, but previous did see MY TB account named “Aviation”. They, Hostinger, said THEY aren’t “moving” anything anywhere – not into “Junk”, anyway. Are they lying (as popular as that has become recently)?

I’m not smart enough to understand DKIM (though I could get that way) just want to see ALL email sent to ALL my e-addresses that didn’t get there – wherever it is (not immediately, I would hope)!

Merci,

Dru

Just recently, some of the emails I receive are full of messages in red next to almost every line of the email saying that things like "Likely fraud detected" or "Do not trust this website." There is no indication as to what program is creating all these warnings. I have tried to turn off anything I can find in Thunderbird's security settings to no avail. The main source of emails with these warnings is "Beermenus.com" which I have been receiving for quite awhile before this started. Any ideas on what to do

I've been using Thunderbird for a few months now and I have been marking email as "spam" or as "not spam" but I am finding that a lot of addresses that I mark as "not spam" still end up in my spam folder, even after marking them several times.

What I have been doing is restoring the email that I want to read back to the inbox and marking it again as "not spam". Some email that I mark as spam does get moved to the spam folder, which is fine.

Is this was happens for some considerable time or am I getting something wrong?

I am being barraged by email spam by the hundreds all day and all night I have placed almost 100 filters that put the spam in the trash, but since many of my contacts wind up in the trash folder as well, i need to look through it all to verify spam, not something important.

Is there any way to keep these unwanted emails from loading?

In the past week emails from one of my friends started going into junk mail. The person in in my contacts. I selected 'enable adaptive emailjunk mail..." and selected the correct address book. The mail still went to the junk folder. I changed the 'move new junk mail to: my inbox, still went into the junk folder. I had him send me 10 emails that I marked as 'not junk' still no success. My emails come from yahoo.com - went there and there was nothing in the spam or junk folder in my yahoo email account. This is happening to only one email address. There's nothing strange in the title of the email or the content. I've run out of ideas.