I am not getting my emails and when they do come in they are not showing the content.
When adding a new email account, the built-in web browser launches and displays the OAuth screen. To verify the security of the destination site, I want to click the gree… (читати далі)
When adding a new email account, the built-in web browser launches and displays the OAuth screen. To verify the security of the destination site, I want to click the green lock icon in the URL bar to check the details, but I can’t click it.
Does a green lock icon mean a secure connection has been established?
Every time I launch Thunderbird Beta 151.0b1 on Arch Linux, I immediately get a notification saying "The certificate for imap.gmail.com does not come from a trusted sourc… (читати далі)
Every time I launch Thunderbird Beta 151.0b1 on Arch Linux, I immediately get a notification saying "The certificate for imap.gmail.com does not come from a trusted source." If I click through to the exception dialog, it shows "No Information Available / Unable to obtain identification status for this site" — it can't even fetch the certificate to show me what's wrong with it. The error only appears on launch and doesn't come back. Mail sends and receives fine.
From the terminal, openssl connects to imap.gmail.com:993 without any issue (Verify return code: 0, TLS 1.3, X25519MLKEM768). No antivirus, no VPN, no TLS-intercepting software. NSS 3.123.
Has anyone else seen this? Is this a known Beta issue?
Dear all, When receiving signed AND encrypted mails from an Outlook-account I get the exclamation sign for the signature. The message is (German) : "Digitale Signatur ist… (читати далі)
Dear all,
When receiving signed AND encrypted mails from an Outlook-account I get the exclamation sign for the signature.
The message is (German) : "Digitale Signatur ist ungültig Diese Nachricht enthält eine digitale Signatur, die aber ungültig ist. Die Nachricht wurde mit einer Verschlüsselungsstärke signiert, die von dieser Version Ihrer Software nicht unterstützt wird. Signiert von...."
I already did all standard checks (trusted, new hash algorithm and so on),
Now I would like to know the EXACT reason why Thunderbird is not accepting the digital signature. How can I accomplish this?
THX in advance and best regards!
2026-04-25 SAT 14:45 BST I have boujht a DigiCert S/MIME Class 1 certificate from thesslstore, but I have not yet got it. They sent me 3 .crt files, but I have not unde… (читати далі)
2026-04-25 SAT 14:45 BST I have boujht a DigiCert S/MIME Class 1 certificate from thesslstore, but I have not yet got it. They sent me 3 .crt files, but I have not understood how to use them. I hope someone can explain the problem and/or suggest what I can do about it please ? I do not remember having this sort of problem in previous years.
Am receiving a message reading- The certificate for imap.gmail.com does not come from a trusted source. … (читати далі)
Am receiving a message reading-
The certificate for imap.gmail.com does not come from a trusted source.
Dzień dobry, podczas tworzenia wiadomości i próbie zapisania jej na później, otrzymuję komunikat: Ostrzeżenie Błąd podczas zapisywania szkicu - W Twojej bazie kluczy nie … (читати далі)
Dzień dobry, podczas tworzenia wiadomości i próbie zapisania jej na później, otrzymuję komunikat:
Ostrzeżenie Błąd podczas zapisywania szkicu - W Twojej bazie kluczy nie można odnaleźć identyfikatora klucza „0xD3ADE4868E262032”.
Nie potrafię tego naprawić. System iOS na Mac.
Proszę o wsparcie.
Pozdrawiam
Why do I suddenly (from one day to another) receive the message: "Das Zertifikat für imap.gmail.com stammt nicht von einer vertrauenswürdigen Quelle." when trying to dow… (читати далі)
Why do I suddenly (from one day to another) receive the message: "Das Zertifikat für imap.gmail.com stammt nicht von einer vertrauenswürdigen Quelle."
when trying to downlowd messages from Gmail?
I have not changed anything at all.
Hello, I am writing this message in regards to Thunderbird's GPG support after v68, in the last hope that someone suggests a solution that moves me away from version 68. … (читати далі)
Hello,
I am writing this message in regards to Thunderbird's GPG support after v68, in the last hope that someone suggests a solution that moves me away from version 68. I consider the current state broken.
My PGP keys reside on a Yubikey, but smartcard usage has been broken after v68, as none of the supposedly correct setups work. It should work pretty much out of the box, but it doesn't. The whole idea of moving away from Enigmail without having a properly, fully implemented support, including for smartcards, or at least for working with GPG, was utterly misguided, IMO, and broke the once nice client.
I enabled gpg usage and fetching in Settings, I imported my pubkeys to Thunderbird's PGP manager, then added my external key (with GPG). Everything looks fine. But when I click an encrypted message, I get "The secret key that is required to decrypt this message is not avaliable". Nah, it's available and it's there! The pinentry isn't appearing at all and this is the result. I believe this is TB's fault, as the pinentry correctly appears with everything else I do, also with TB 68 + Enigmail. The setup is the same. I am using the latest Gpg4win.
Settings:
mail.openpgp.allow_external_gnupg - true mail.openpgp.fetch_pubkeys_from_gnupg - true mail.openpgp.alternative_gpg_path - has no effect whether set or not
gpg-agent.conf:
enable-win32-openssh-support default-cache-ttl-ssh 900 max-cache-ttl-ssh 1800 no-allow-external-cache default-cache-ttl 300 max-cache-ttl 3000 ignore-cache-for-signing allow-loopback-pinentry
gpg.conf:
utf8-strings auto-key-locate local use-agent
FYI, adding "pinentry-program" has no effect on solving the problem, whether set or not.
Your suggestions are welcome!
Thunderbird Filelink uses end-to-end encryption and files are only encrypted/decrypted locally but unless the code running on your system is reviewed and validated you do… (читати далі)
Thunderbird Filelink uses end-to-end encryption and files are only encrypted/decrypted locally but unless the code running on your system is reviewed and validated you don't really know what it does. I would think that every time recipients click on the link and use the web interface to download a file, their browser is sent a script that does the decoding. Similarly, if you use the web interface of a Send instance to send a file, your browser is sent a script for encoding.
If the above is correct, how do we know these scripts are always the open source scripts that have been independently validated? Isn't it conceivable that a Send instance may send you a customized script for encryption/decryption that compromises encryption? This could be done with selected targets to avoid attracting attention too.
I received 2 notifications stating that 1) The certificate for imap.gmail.com does not come from a Trusted Source and 2) You are about to override how Thunderbird Identif… (читати далі)
I received 2 notifications stating that 1) The certificate for imap.gmail.com does not come from a Trusted Source and 2) You are about to override how Thunderbird Identifies this site. Legitimate banks, stores and other public sites will not ask you to do this. This site attempts to identify itself with invalid information. The certificate is not trusted because it hasn't been verified as issued by a trusted authority using a secure Signature. I have been with Thunderbird for around 20 years and have contributed to it twice, so please help me!
On my Linux machine, I exported the public key for an email address in Thunderbird 140.8.0esr (64-bit) into a file. I transferred the file to my Windows 11 machine via Wa… (читати далі)
On my Linux machine, I exported the public key for an email address in Thunderbird 140.8.0esr (64-bit) into a file. I transferred the file to my Windows 11 machine via Warpinator.
On the Windows machine I am running Thunderbird 148.0.1 (64-bit). In Account settings>End-to-End encryption, I click Add Key>Import an existing OpenPGP key>Select File to import, and then I select the file.
I get an error message: Error! Failed to import file.
I'm surprised. I would think that going from one installation of Thunderbird to another would work this way. I am concerned that I won't be able to read incoming encrypted emails without the key working.
Can someone help me?
I receive a lot of Thunderbird messages with this text (in French) : "Le certificat pour imap.gmail.com ne provient pas d’une source sûre." What I have to do please Thnx … (читати далі)
I receive a lot of Thunderbird messages with this text (in French) :
"Le certificat pour imap.gmail.com ne provient pas d’une source sûre."
What I have to do please Thnx
I have problems every time I try to fetch my imap gmail, with Thunderbird complaining that: "The certificate for imap.gmail.com:993 does not come from a trusted source". … (читати далі)
I have problems every time I try to fetch my imap gmail, with Thunderbird complaining that: "The certificate for imap.gmail.com:993 does not come from a trusted source".
As near as I can tell, imap.gmail.com:993 is still the recommended setting for
Version is Thunderbird 148.0.1 (64-bit). Adding an exception for the missing certificate does not seem to make a bit of difference.
I do not know if the use of Bitdefender as my security and vpn software is a factor. I notice that the certificate (exception certificate?) shown when I click on View Certificate in my gmail account settings appears to mention Bitdefender, so perhaps that's a factor. That certificate looks as follows:
Certificate Subject Name Common Name imap.gmail.com Issuer Name Country US Organizational Unit IDS Organization Bitdefender Common Name Untrusted Bitdefender CA Validity Not Before Mon, 02 Feb 2026 08:37:57 GMT Not After Mon, 27 Apr 2026 08:37:56 GMT Subject Alt Names DNS Name imap.gmail.com Public Key Info Algorithm Elliptic Curve Key Size 256 Public Value 04:2D:20:DA:19:33:1D:AC:28:91:52:02:EB:B8:7E:33:C0:B7:E4:F3:5E:4E:88:92:E5:7E:BB:30:0C:6C:E4:84:A8:3D:D7:49:9B:22:C8:C0:BB:01:80:4B:84:30:3A:3B:73:70:8F:AB:EB:C0:F0:D5:7B:8B:0B:64:1B:DC:76:67:41 Miscellaneous Serial Number 1A:50:ED:15:50:A1:A7:93:5D:05:8A:CD:85:A5:15:FD Signature Algorithm ECDSA with SHA-256 Version 3 Download PEM (cert)PEM (chain) Fingerprints SHA-256 12:8A:58:44:DF:B5:E1:E4:EF:CC:F7:35:09:BA:6E:88:86:16:15:78:F9:28:52:23:FC:0E:E9:69:D1:AF:21:86 SHA-1 A3:30:CB:65:39:51:46:9B:3B:BC:0B:B9:09:DD:26:40:A8:52:25:3D
Running Thunderbird 140.8.0esr 64bit Windows 11 Home, v25H2 932GB storage 32GB ram i7-13700k Recently, I've started getting the following message every time I launch T… (читати далі)
Running Thunderbird 140.8.0esr 64bit Windows 11 Home, v25H2 932GB storage 32GB ram i7-13700k
Recently, I've started getting the following message every time I launch Thunderbird: "The certificate for imap.googlemail.com does not come from a trusted source."
Digging into details I get: "you are about to override how Thunderbird identifies this site" "Location: imap.googlemail.com:993" "This site attempts to identify itself with invalid information" "Unknown Identity. The certificate is not trusted because it hasn't been verified as issued by a trusted authority using a secure signature."
Digging deeper into the certificate I find the issuer is Bitdefender who I use for antivirus and VPN. However, the VPN shows no effect when enabled or disabled. The validity period is 2 Feb 2026 to 27 Apr 2026
l can get email, but cant send it. Is Bitdefender at fault?
I'm stumped. What should I do???
Can not get into account all of a sudden
certificate for imap <edited>@peternedsmith.co.uk is not valid, someone could be trying to impersonate the server and you should not continue, on clicking the more … (читати далі)
certificate for imap <edited>@peternedsmith.co.uk is not valid, someone could be trying to impersonate the server and you should not continue, on clicking the more info, on the panel that comes up, if I click on get certificate, the selections below get greyed out and nothing happens, I have viewed the certificate, and it appears to be from the US, I have taken a screenshot of the top part of it, which is below. Regards Peter Smith
DEUTSCH (English see below(: Hallo zudammen, Konfiguration: - Window11 25H2 (aktuell) - Thunderbird Beta-6 (BuildID=20260213180051) - gpg2.5.17 (Gpg4Win 5.0.1); siehe au… (читати далі)
DEUTSCH (English see below(:
Hallo zudammen,
Konfiguration: - Window11 25H2 (aktuell) - Thunderbird Beta-6 (BuildID=20260213180051) - gpg2.5.17 (Gpg4Win 5.0.1); siehe auch: <https://www.gpg4win.de/>
Der bisherige und standarmärige Installationspfad von "Gpg4Win": "C:\Progam Diles (x86)\Gpg4Win\" wurde softwareseitig auf: "C:\Progam Diles\Gpg4Win\" geändert!
Bug 1967121 (Closed) => thunderbird148 --- fixed! <https://bugzilla.mozilla.org/show_bug.cgi?id=1967121>
Zur Zeit verfolge ich die Änderungen bezüglich der externen Schlüsselverwaltung in Thunderbird-Beta, da das Arbeiten mit externen Schlüsseln in der esr- und in der relesease-Version von Thunderbird seit der offiziellen Herausgabe von gpg2.5.x absolut nicht mehr möglich ist! Die geheimen Schlüssel für das Entschlüsseln und Signieren werden mit gpg2.5.x nicht mehr gefunden!
In der Schlüsselverwaltung von TB-Beta befinden sich meine öffentlichen Schlüssel und alle öffentlichen Schlüssel meiner Kommunikationspartner. Extern sind meine geheimen Schlüssel gelagert. Folgende Präferenz wurde aufgrund von gpg2.5.x hinzugefügt:
Allerdings erscheint nach all diesen Maßnahmen die Fehlermeldung: "The secret key that's required to decrypt this message is not availlable."
Mit Herausgabe von Thunderbird/148.0 (release) sind dort die gleichen Probleme mit der externen Schlüsselverwaltung zu bepbachten!
Mit Versionen gpg < 2.5 funktioniert unter Windows alles problemlos!
UNTER LINUX haben hier Änderungen an der Präferenz: "mail.openpgp.load_untested_gpgme_version" nachweislich keinerlei Auswirkungen!
Was übersehe ich?
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
ENGLISH:
Hello,
Configuration: - Window11 25H2 (current status) - Thunderbird Beta-6 (BuildID=20260213180051) - gpg2.5.17 (Gpg4Win 5.0.1); see also: <https://www.gpg4win.de/>
The previous and default installation path of "Gpg4Win": "C:\Program Files (x86)\Gpg4Win\" has been changed by the software to: "C:\Program Files\Gpg4Win\"!
Bug 1967121 (Closed) => thunderbird148 --- fixed! <https://bugzilla.mozilla.org/show_bug.cgi?id=1967121>
At the moment, I’m following the changes regarding external key management in Thunderbird Beta, because working with external keys in the ESR and release versions of Thunderbird has become absolutely impossible since the official release of gpg 2.5.x! The secret keys required for decryption and signing are no longer found when using gpg 2.5.x!
In Thunderbird Beta’s key manager, my public keys and all public keys of my communication partners are present. My secret keys are stored externally. The following preference was added because of gpg 2.5.x:
However, even after all these measures, the following error message appears: **"The secret key that's required to decrypt this message is not available."**
With the release of Thunderbird 148.0 (release), the same problems with external key management can be observed there as well!
With gpg versions **older than 2.5**, everything works flawlessly under Windows!
"mail.openpgp.load_untested_gpgme_version" have demonstrably no effect at all!
What am I missing?
I successfully imported the self-signed CA certificate into thunderbird. Then I tried to import the p12 S/MIME client certificate and this error message popped up (cf. sc… (читати далі)
I successfully imported the self-signed CA certificate into thunderbird. Then I tried to import the p12 S/MIME client certificate and this error message popped up (cf. screenshot below).
However, I checked the client certificate and it seems fine:
Enter Import Password: MAC: sha256, Iteration 2048 MAC length: 32, salt length: 8 PKCS7 Encrypted data: PBES2, PBKDF2, AES-256-CBC, Iteration 2048, PRF hmacWithSHA256 Certificate bag PKCS7 Data Shrouded Keybag: PBES2, PBKDF2, AES-256-CBC, Iteration 2048, PRF hmacWithSHA256
Enter password for PKCS12 file: Certificate(has private key):
Data:
Version: 3 (0x2)
Serial Number: 1 (0x1)
Signature Algorithm: PKCS #1 SHA-256 With RSA Encryption
Issuer: "..."
Validity:
Not Before: Thu Feb 19 13:32:18 2026
Not After : Sun Feb 17 13:32:18 2036
Subject: "E=user@example.com,CN=user@example.com,
O=example.com,ST=...,C=..."
Subject Public Key Info:
Public Key Algorithm: X9.62 elliptic edwards curve public key
unknown SPKI algorithm type
Raw:
69:58:ee:5d:45:3f:10:d9:bb:8c:a3:b6:a5:c6:16:a6:
53:78:65:77:73:5d:e0:6f:60:df:2c:32:f3:c2:e2:58
Signed Extensions:
Name: Certificate Basic Constraints
Data: Is not a CA.
Name: Certificate Key Usage
Usages: Digital Signature
Non-Repudiation
Key Encipherment
Name: Extended Key Usage
E-Mail Protection Certificate
Name: Certificate Subject Key ID
Data:
99:8a:6d:e4:ec:3a:25:5d:ad:26:a0:36:e1:da:a2:ea:
bc:88:79:50
Name: Certificate Authority Key Identifier
Key ID:
f5:6c:37:9a:37:d1:81:43:d3:54:3f:b9:33:23:85:c1:
7e:17:73:88
Name: Certificate Subject Alt Name
RFC822 Name: "user@example.com"
Signature Algorithm: PKCS #1 SHA-256 With RSA Encryption
Signature:
44:3a:5e:d7:44:51:f1:3c:a3:80:d8:54:f4:9c:d8:0b:
...
Fingerprint (SHA-256):
88:95:7A:DF:A5:7C:D1:E8:A5:55:A8:18:BD:BD:7D:92:1F:7D:6E:17:26:68:39:84:26:F3:F6:F3:4A:5C:56:90
Fingerprint (SHA1):
72:83:D0:13:C9:C9:AD:46:CA:C3:73:66:9E:79:5B:5C:3B:2E:81:47
Key(shrouded):
Encryption algorithm: PKCS #5 Password Based Encryption v2
Encryption:
KDF: PKCS #5 Password Based Key Derive Function v2
Parameters:
Salt:
dc:f9:bf:4a:80:e1:7c:4a:b4:f5:52:6b:9b:d5:75:ad
Iteration Count: 2048 (0x800)
KDF algorithm: HMAC SHA-256
Cipher: AES-256-CBC
Args:
04:10:0d:a4:96:03:00:2a:d5:a6:fe:d3:6c:a5:d0:12:
67:b3
What is going on and how to troubleshoot this issue as there is no logging about this matter into /var/log/syslog?
Environment: - Ubuntu 25.10 - thunderbird 2:1snap1-0ubuntu3
When my message filter uses the "Reply with Template" action, the reply e-mail is always PGP encrypted, even when I do not have any public key for the recipient e-mail ad… (читати далі)
When my message filter uses the "Reply with Template" action, the reply e-mail is always PGP encrypted, even when I do not have any public key for the recipient e-mail address. As a result, the reply e-mail is always corrupted.
I am using Thunderbird 140.7.1esr on Windows 10.
I have attached a screenshot of what the reply e-mail always looks like.
In the Template that I am using, the "encrypt" button is not selected, and in the OpenPGP menu of the Template, the "Encrypt" menu item does not have a checkmark next to it.
Does anyone know how I can get Thunderbird to send reply e-mails without using encryption?