Thunderbird Community Forum

Running Thunderbird 128.2.3esr under Windows 10, I just noticed something for the first time. I sent a broadcast message to myself, but included four friends under Bcc:. When I got my own copy of the email, from the address on the To: line, I see that the Bcc: list is visible, as shown in the attached image. Is this JUST on my received copy of the message, or is everyone's name 'in the clear?'

Thinking that my outgoing message might have been cached-and-used or something, I went into my Gmail Web account and looked at the message as received by Google's servers. Sure enough, the 'blind' (ostensibly hidden!) names show up there as well, so I'm assuming that the Bcc: function may not be doing its job. Either that, or the primary (To:) recipient sees the Bcc: list in the clear, and listed Bcc: recipients won't, although I don't recall Thunderbird working this way in the past. But if it does, that's okay, just that Windows Live Mail, my previous client, didn't.

Multiple people use this pc and Tunderbird. When I open Tunderbird it show the mails I had last time I openend it. I would like it to be hidden until I enter my password so only I can see the emails. Can anyone please help?

I'm setting up a new computer for an elderly lady. On her old computer she logs straight in to emails. But I want to set up on new computer but it doesn't recognise her email address or password - both are correct. Old computer is not Wifi so modem is connected by a lead. I've been transferring the lead to the new computer - but maybe I don't need to do that? Would that be confusing the configuration?

I have not been able to make a connection to the mail.comcast.net for a day now. I see the connecting bar at the bottom but get a failure that it failed to connect. I cleared the password manager. but no popup appears to enter my password in. So without authentication, it cannot get the email. I can't force the login popup to appear to enter the new password.

Server settings are fine, I am using POP3 which is remaining a valid choice. I use avast, current version (autoupdate) Thunderbird is current too. My firewall is WindowsDef, but Thunderbird is on allowed list. I have briefly turned off both Avast and still no connection. I', not sure if defender is blocking even if I selected it. Comcast of course denies anything as the web interface is fine ATM.

(this is not the router or modem as another laptop using thunderbird (probably older as it's my mother's) opens fine. I have done little else for the last day and have run out of things the check, help>! Thanks

I have changed the privacy settings as suggested in the help guide, but any image I text to my e-mail is blocked. They can only be double clicked on the footer to open them in another application. Is it possible to have them load automatically in the body of the e-mail?

the email "email stating We couldn’t process your monthly recurring donation from noreply@fundraiseup.com" really appears to be a scam

Please advise

Thank You

Hi guys,

I'm communicating with some colleagues using S/MIME encrypted messages. I have already imported all the necessary licenses, and all licenses are valid until 2034. I can receive and read all the encrypted messages they sent me, but every time I try to reply or send them (the same people) encrypted messages, the error pops up saying 'End-to-end encryption requires resolving certificate issues'. I already checked all the licenses but couldn't find any issues. Can you suggest some ways to resolve it? Thank you!

Hello, VER: 128.3.0esr (64-bit)

Since I have updated to the newest version of TB, it is now a continiuous issue with "Not Responding". This is happening on three different computers with my mail accounts. I am using Godaddy (IMAP) as my mail service, and they now use Office 365. I did read in a post to add my profile to my firewall exlusion. This did seem to solve my issue, but I have since removed it as I am not sure it is safe. Is there any safety issue adding the profile to the firewall exclude.

Thank you, JR

I have just completely reinstalled Thunderbird v115.11.1 after uninstalling the previous installation. There are two problems, possibly linked to a faulty or missing setting.

Remote images will not display, even after specifically enabling remote images for each email, or after turning on "display remote content" as a default. Also it claims there is a potential security threat with Thunderbird's own web addresses: "live.thunderbird.net." and "addons.thunderbird.net.".

I have attached screen-shots of the error messages, and of a thunderbird email that fails to display its images.

settings for smtp server for cox.net account using Thunderbird server name smtp.cox.net port 465 but I have also tried 587 connection security STARTTLS no authentication method user name [removed]

settings are the same for account using Outlook, which does allow me to send emails

Currently unable to set up to an existing account on a new laptop. I’ve verified user name and password on the old laptop, but these don’t work when setting up the new one. The Thunderbird set-up wizard found my configuration in the Mozilla ISP DB, but can’t verify it. In other words, it won’t accept my username or password. I’ve done this for both IMAP and POP3, but it makes no difference. I’ve confirmed user name and password for both smtp and mail folders, and tried them in setting up. However, on the new laptop, Thunderbird doesn’t ask for user name, but just the name as displayed to others. Once I get set up, I’d like to copy my archive into the new system. One thing at a time…

My PEC mail sends me this error:

Sending username failed. The mail server mail.postecert.it responded: unsupported SASL authentication method

Can this be solved? Thanks

While using you site and looking at joining Thunderbird mail I have been cf charged twio amounts 1p and £34.99 by library hub .com I did not authorized These payments it is fraud I'm 71 years old and nearly blind and can't afford The loss of this money. Kind Regards James Robson

I had 2 gmail addresses in Thunderdbird. For the first one, I just changed the password authentication method to Oauth2 in the server parameters and it instantly made the replication work.

For the second one, I unfortunately deleted the account and couldn't recreate it, even with the "less secured application" set on in the Google Account parameters. I also tried to activate the 2 level connexion method and generate an application password but couldn't find any way to use it in thunderbird. Therefore, I'm stuck with Webmail Gmail application. I have noticed that the connection has been bllocked by Google (see image)

Hope some body can help (this is related to Google security reenforcement actions but seems that Thunderbird is not up to date on this issue).

Please find attached the first page of my troubleshooting info.

Hello: t-bird 128.3.0 esr 64bit. W11pro laptop (dell). MalwareBytes Team up & running & up to date, many yrs. Problem: an attachment, which I tried to completely remove, keeps "coming back" in emails, in a specific inbox (only 1 inbox, of 1 acct). Other t-bird mail accts do NOT have this issue. -The "coming back" means that I delete the attachment and empty the t-bird trash. The attachment then plants itself in another email. -Once planted in an email, it appears the attachment completely erases the body of the text of the body of the email. -The attachment, when opened, is an image of a family. That is it. It is not of any family we know. It is always the same family. -I "found" the attachment (using a search program) by name, "img_2068.jpg" . Deleted what I thought were all occurrences of this file on the laptop, which were only 2 files, both in temp folders. I deleted all temp files from the laptop, emptying the w11 trash & also running w11 file deletion apps. Malwarebytes has never detected this corrupt image file. -After making all those deletions, I ran the search and the search prog did not detect the file. But I reopened t-bird and the corrupt attachment has attached itself to another email, and the same behavior recurs (I delete attachment, corrupt attachment attaches itself to another email).

-Also please note, the emails that had the corrupt attachment attached (have been previously not having any attachments), do exist on the mail server (imap), where you can see the the message body/text. And again, once the corrupt attachment infects an email, in t-bird, that email's body/text goes blank, there is no longer any message to be seen. There is just the attachment notice at the bottom of the email border, to be clicked on to open.

Is the only solution to completely back up all the t-bird accts (address books, sent, drafts, etc.) and reinstall t-bird program (and/or profiles) ? Or, would an "easier" way work (or has worked), like simply deleting the inbox of the "infected" account? I would then download the uncorrupted emails from the imap server in a new inbox. But I don't know where to find this corrupt file, there is apparently no "attachments" folder for t-bird. And again, searching by corrupted attachment file name, and removing it as above, has apparently NOT removed all instances. I don't know how else to find it.

Please advise. Thank you.

Have removed password entry in security. Tbird then hangs on 'Connected to ....', but does not offer chance to put in new password. So I can see inbox and emails on BT but not through Thunderbird. Solutions appreciated.

Tom Nicholson