Forum zgromaźeństwa Thunderbird

Even though I have created a main password I find that I suddenly I can open the application and view accounts and even security info, without putting it in anyway.

Dear all,

I would like to use Thunderbird on a shared computer at my universitys lab space (it is mainly my PC but other people have access and use it sometimes). However, as we are requested to keep mails confidential I thought it would be as easy as just setting a primary password and thunderbird would not start if that password is not set. However, that proofed to be a wrong assumption. Instead if I just cancel the dialog it will open and still display all the locally stored mails.

We are using IMAP server and I already set up that the mails are not stored locally. Still, some mails that I have used recently are visible. I am aware that there would anyway be the local copy in the profile folder but I guess none of the people sharing that computer would take the efford to check that, so I would be fine if I could simply prevent thunderbird from starting without the primary password.

Is there any option for that or any extention that would do so?

Thank you in advance! Juergen

It recently came to my attention that Gmail is using my (and others) emails to train their AI to provide "overviews" for email threads. I didn't find that in any of the recent Agreement changes so feel safe is stating Alphabet/Google never obtained my permission for this training. I'm not a fan of the far-flung use of AI and the mounting examples of how horrendously Google AI performs hasn't done anything to relieve my concerns.

I began a search for a better, reliable email client and there is a depressing shortage of them that fulfill the average email users' needs. Thunderbird looks pretty good but reading through the Help section, Community Forum questions and just general articles hasn't clarified a couple of questions I have.

1. Is Thunderbird a comprehensive email client, independent of other clients, or does it provide service by partnering with another client?

2. Does Thunderbird utilize AI for any purpose that requires the "review" and storage of individual users' emails?

Many thanks, MarilynB

2019 MacBook Pro

For about the past 10 days or so Tbird has been presenting me with a request for my user name and password for, i am assuming, inclusion as an added account. They want

The problem is that in have no idea who caldav is or where they got my link to Tbird. My concern is that this may well be malicious. They want me to authenticate with username and password. What user name and what password?

Does anyone in the forum know what this is all about and how i can get them permanently excluded? With all the fake / criminal challenges on the net these days, i am very nervous (77 years old).

Any help would be really appreciated. Thank you

Assuming that I don´t want any Google server to track me what could I click in the attached? It's a nice feature but as it is not clear what the last three options do a bit of a guess.

Today is 01.16.2026 Hi Volunteers, thank you for the service you are providing Thunderbird users.

I didn't see a topic called Security, so I chose Settings.

For Thunderbird version 146, what specific version of LDAP is being used?

Regarding which LDAP version is the most up to date, I found this: https://pkg.go.dev/github.com/go-ldap/ldap/v3@v3.4.12

My concern is about LDAP's security. I believe it is reasonable to think that the latest available version of LDAP would have the latest and most up to date security patches applied.

I would like to feel secure knowing I have the protection of the newest version of LDAP which affords the best security protection available for Thunderbird laptop version 146.

However I have been unsuccessful in determining if Thunderbird 146 is using this LDAP latest version. Could you help me learn if Thunderbird 146 is utilizing the latest version of LDAP that is available? Thanks in advance.

Yes I know I am a bit verbose.

I am using Thunderbird with both Microsoft and Gmail accounts. My question is... is Microsoft able to see that i am using a Gmail account, and/or the account name/adress, and vise versa?

I have & use the T-Bird app on my desktop pc. I have it set up with a password for access when I click on the system tray icon to launch the program. It then asks me for my password, all good, yes, just as needed for security. But, as with other apps, I would like a second layer of security such as 2FA. I have an authenticator app on mobile phone for this additional layer of security for all my other apps, works great. I can't find this second layer of security on the T-Bird app, is it available, if so, where is it? Thank you.

Hello, I have the following problem: Bitdefender keeps sending me notifications about Thunderbird emails. I have already contacted their support team and they advised me to tell you that Bitdefender correctly detects and removes infected attachments in the temporary folder; However, some emails do not seem to be deleted or synchronized correctly with Gmail, causing repeated notifications. Can you please help me?

I have a problem with thunderbird. I can't fetch the certificate in my account settings, it seems it's not security approved. Normally when I type "fetch certificate" a window pops up asking me to confirm a security exception, but this function no longer works on thunderbird. Is there another way I can confirm the security exception?

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Hello,

I have saved message templates that I use. Each one also has a footer (which I save as an .html file).

When I use this template to send a message, the image in the footer doesn't load and I get the message: Thunderbird has blocked the file from loading in this message.

When I click UNBLOCK, nothing happens. The image still doesn't get added. It's a very small image from my footer/signature. 'When I compose a new message, I don't have this problem' – the image in the footer loads and is sent to the recipient. This problem occurs when I try to send a message saved in the templates. There's no way to "unblock the image" and send it.

Mozilla Thunderbird Email wants to access your Google Account

This will allow Mozilla Thunderbird Email to:

Read, compose, send, and permanently delete all your email from Gmail

See, edit, download, and permanently delete your contacts

See, edit, share, and permanently delete all the calendars you can access using Google Calendar

Mzila Fire Fox that has me perplexed. There is a line that reads, In part….. https://accounts.google.com/signin/oauth/legacy/consent? uthuser=0&part=AJi8hAO27SA1jp0smbnYjSww31z06r6NnelkFAEXAX1pRgQq_2fkoC2lI-Rs0mf3jYCnMSdoG2Gr9V6XDkmWlQydzTYpDy4U-OREnYRGiXK0wIrp32BEL1sC1QyzBm-ZzUFPi6sQw3DCq7hh-HL7ZEAw9QDzw22rmwU7DPjP1nMpdWenxE6fE4LwyjUnAobeE3RPLIWik4O3f5U4lSI1Hwj0AiWBCsLD-

Hello. I'm trying to set up automatic config for DAV contacts and calendars located on my Nextcloud server. I've followed this doc: https://wiki.mozilla.org/Thunderbird:Autoconfiguration:ConfigFileFormat and I've managed to get at least the calendar to connect, but with one unfortunate condition: I have to open Thunderbird's about:config and set browser.opaqueResponseBlocking and browser.opaqueResponseBlocking.javascriptValidator to false.

Otherwise the request to DAV gets blocked by Thunderbird for some reason. Here is some information about my current setup: IMAP and SMTP servers are located at mail.mydomain.com, and email addresses look like user@mydomain.com. The webserver serving config-v1.1.xml is located there too, but it's behind a reverse proxy, which also proxies nextcloud.mydomain.com. When I add a new account to Thunderbird, it requests mydomain.com/.well-known/autoconfig/mail/config-v1.1.xml, so I've added a redirection rule on the reverse proxy which sends it to mail.mydomain.com and it seems to be working ok. I've added this section to the xml file:

   <addressBook type="carddav">
     <username>%EMAILLOCALPART%</username>
     <authentication>http-basic</authentication>
     <serverURL>https://nextcloud.mydomain.com/remote.php/dav/</serverURL>
   </addressBook>

   <calendar type="caldav">
     <username>%EMAILLOCALPART%</username>
     <authentication>http-basic</authentication>
     <serverURL>https://nextcloud.mydomain.com/remote.php/dav/</serverURL>
   </calendar>

(username on the Nextcloud matches the local part of the email address)

But looking at Network tab of the dev console I can still see that it's trying to get well-known dav from my top level domain. So I add redirection from there too: mydomain.com/.well-known/caldav -> https://nextcloud.mydomain.com mydomain.com/.well-known/carddav -> https://nextcloud.mydomain.com

Finally I can see the request is made to correct address: 207 PROPFIND nextcloud.mydomain.com/remote.php/dav But the icon shows it's blocked and there is a message in the JS console: The resource at “https://nextcloud.mydomain.com/remote.php/dav” was blocked by OpaqueResponseBlocking. Reason: “nosniff is true and mimeType is an opaque-blocklisted MIME type or its essence is 'text/plain'”.

I've found 2 settings I can switch off: browser.opaqueResponseBlocking = false browser.opaqueResponseBlocking.javascriptValidator = false And after that, viola - I can see my calendars showing up upon adding the account (but not contacts, I think it's a separate issue and I have to check everything).

My question is: is it possible to set this up without manually switching Thunderbird options on every machine? Some HTTP headers, perhaps?

I just installed thunderbird on a new install of windows 11 25h2 and added my email account. When I click on a message a yellow banner appears at the top of the message. Previously there was a options button I could click that would allow showing the remote content. There is no longer a options button and I cannot get thunderbird to show remote content.

Hi Folks,

I want to seek opinion on how to manage the virus detected in emails (or its attachments) through Kaspersky Anti Virus.

I have large no of emails in TB stored in mbox format. Around 30GB in Inbox and another 5GB in Sent, etc. I also use Kaspersky Internet Security which has anti-virus also active.

Now my anti virus detects some infected emails. How to clean the infected virus emails / attachments.

Question: 1) When using mbox file on TB, is Kaspersky capable to delete ONLY a single specific infected file from the entire mbox data without any corruption of mail data? 2) If not, how to setup the anti-virus to automatically clean, disinfect and delete/quanrantine individual mail. ?

3) Is MailDir a better way to save emails in profile and use anti-virus. There is a warning on Maildir saying its still not settled and may have bugs. Is that true even today ?

Thanks & Regards, Tejas

Hallo, bei mir kommt immer wieder das angehängte pop-up. Wie kann ich die Abfrage dauerhaft entfernen. Ich hatte mal ocloud aber schon lange nicht mehr also wird das nicht gebraucht Bitte um Hilfe

LG Manfred