Forum der Gemeinschaft Thunderbird

looks like my thunderbird profile was hacked & some email accounts passwords changed, others I have problems send or receiving mail. I've even had emails from the hacker showing my passwords.

I deleted thunderbird &m used a backup profile from Dec24 but still have problems.

I ran Avast which found some trojan files in my thunderbird files, deleted them but I still have probs.

Any idea on a solution?

I am not receiving my emails, and when I try to send I get a message about peer's certificate. Help. And I have read all I can find and there aren't any real answers that I can find.

If marking messages as Junk help train TB, does deleting ALL messages in the Junk folder also undo that training, by getting rid of junk mail "models" TB uses for evaluating incoming new messages?

Wir können wir die Verschlüsselung einer Nachricht aktivieren? Diese ist bei uns durchgestrichen und lässt sich nicht auswählen. Da wir oftmals Befunde verschicken müssen und den Datenschutz nicht verletzten wollen, würde wir gerne die Option der verschlüsselten Nachricht nutzen wollen. Bitte um Hilfe diesbezüglich, danke.

I was issued a new certificate in January, 08th, 2025, and Thunderbird seems to not recognize it as being valid. I´ve double checked all CA´s chain, they are all installed in the computer. When I examine my personnal certificate, the only difference from other certificate that I have installed in the same machine (that is readly accepted and recognized by Thunderbird) is that I see this information in the first level (sorry, in Portuguese-BR):

Restrições básicas Autoridade certificadora Não

I understand this may be some additional information that is present in the certificate, and that is leading Thunderbird to believe my certificate is not valid, as the certificate itself posts that it´s not a CA. Of course it would not be, it was issued by a chain of CA, that is completely valid. Any thoughts?

I get Microsoft authenticator on Thunderbird windows needed ... 14 days left (Microsoft 365 email address)

All worked fine until a few days ago.. getting it on two email accounts.

Clicking on install MS Authenticator, it only shows instructions to add that app on a phone....

Junk button on main page is grayed out. I right click on junk emails and use the button at the top of the menu to mark them as junk but I keep getting mail from the same senders.

Somehow my email is being distributed to all kinds of spam operations and I get at least one new Junk sender every day. I have tried hitting the Junk button for all such emails. I have tried filtering the senders off to Junk, with variations--eg, even after marking as Junk email from "enzo@newsletter.spartoo.com" I set up a filter so all "spartoo.com" goes off to Junk. And I edited the filters to make sure they weren't conflicting with each other. But nothing works and I feel like I'm in Junk Hell without any support from Thunderbird. Halp!

I have set a Primary Password in Thunderbird, but when it requests it, pressing cancel for some times bypass the request and I can login without any problem

I'm on Linux Mint 21.3 Cinnamon

I need help troubleshooting some inconsistent behavior with S/MIME.

Platform: Oracle Linux 7.9 Thunderbird Version: 128.6.1esr Smart Card: Identrust ECA Medium Assurance Token

Background: - Previously, I've used this card to sign and encrypt email. It is definitely associated with the email address I'm trying to use it for. - Thunderbird WILL let me use this smart card to decrypt emails that I previously sent to myself. Thunderbird reports that the emails were also signed (accurate), and that the CA/trust chain is valid. - OpenSC and PCSC are both installed and appear to be happy.

Inconsistent Behavior: - Thunderbird will not allow me to add my personal certificate (smart card) for S/MIME signing, or encryption. The certificate manager says it cannot find a certificate associated with my email address. Drafting a new email does not offer options to Sign, or Encrypt. - Device Manager shows that the smart card's status is 'Logged In' (pin was entered correctly) - Thunderbird is using the smart card to decrypt and validate the signature of emails I previously sent to myself. (When I try to open these emails WITHOUT my smart card inserted, I cannot decrypt these emails. If I try to open the emails before entering my pin, I get prompted to enter my pin.)

So I can decrypt emails with this card. Emails signed with this card are valid. Thunderbird can use this card for decryption, and reports no issue with the certificate->email address relationship. But when I try to add the card for signing and encrypting new emails, Thunderbird fails to find it, or fails to associate it with my email address.

I suspect that the error reported is inaccurate/unhelpful, but I don't know where to go from here.

Bonjour, Je possède Thunderbird depuis longtemps, avec 3 adresses SFR et 1 Orange tout a toujours bien fonctionné sauf ce matin tout a coup ,j ouvre Thunderbird je reçois tout les mails de chacune des boites... impeccable. En travaillant a coté, une fenêtre s' ouvre et me dis "Échec de la connexion depuis le serveur imap.sfr.fr avec le nom d’utilisateur denis.....@sfr.fr." Je re-rentre donc mon mot de passe ,pareil ! je vais sur sfr directement je vérifie tout le mot de passe fonctionne mais plus dans Thunderbird. Voila mon probleme. Je ne comprend pas.

Hi, I have three email adresses installed on Thunderbird. All have Junk folders I see on screen. But while two addresses sow junk files one is all the time empty. But this address on mail app on iPadAir displays yhe lot od junk messages in the same time. All settings for the three adresses on Thunderbird are he same. My PC is Win 11 64-bit Desktop HP Pavilion. Icon for bad junk folder is a little bit different than the icons 1 Version of Thunderbird is 28.6.0esr (64-bit)

Two months ago I tried to send an email on Thunderbird (not using email address logged in here) and I received the popup message below. I did not access the site as given, but just uninstalled and reinstalled Thunderbird and all worked OK until now, The same thing just happened. My IP said they had not heard of Abusix and that it might be a problem with Thunderbird, hence the reason for de/re installing. Is this threat real or is it a hoax or scam or what. Searching for Abusix all I get are results pointing me to their website.

Quand je reçois une pièce jointe en word ou excel par exemple, et que je l'entregistre sur mon bureau, il est impossible de l'ouvrir car le fichier est bloqué. je dois aller dans les propriétés du fichier et cliquer la case "debloquer".

Comment éviter cela merci par avance

Context: I'm moving from Outlook to Thunderbird so still adjusting. Bear with me.

I prefer to view all incoming messages initially as plain text. I believe this prevents tracking-images and other detritus from coming in with the message. So with Outlook, everything come in plain text; I can change the currently displayed message to HTML when I trust the source and want view it that way. It does NOT affect the other messages.

Now, with TB, it seems that when I choose the View / Message Body As / Original HTML then all messages viewed subsequently are displayed as Original HTML.

I've looked around for a little while and don't see the how to default all messages to Plain Text and apply the View-as-Original-HTML to only the currently-displayed message.

Is this possible? Thanks for your help, Mark