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I've been using TB for years with an AT&T account on a Windows 10 desktop. Two days ago all was working well sending and receiving. I stepped away for an hour (without obvious updates or changes) and surprisingly it didn't work, with TB asking for a password but not accepting it. I deleted saved passwords and tried multiple times, even changing my AT&T email password twice. I could access the email account directly through the AT&T website using those passwords.

I spoke with an AT&T support rep and he had me delete the account in TB. I did so but now can't reestablish it. I've repeatedly tried to add a new email account using credentials I know are correct, trying numerous POP3 and IMAP protocols, all without success. When TB probes the AT&T servers it says it finds those parameters, but then when it checks the password it fails, simply giving the vague message "Unable to log in at server. Probably wrong configuration, username, or password."

I've spent two days researching this problem and trying proposed solutions such as disabling firewalls and anti-virus programs, clearing Windows and internet caches, deleting saved passwords, etc. I was able to set up the account using Outlook on this computer, and if this continues I'll unfortunately be forced to abandon TB and move to Outlook or similar as a substitute. Advice would be appreciated!

I deleted Thunderbird, than Installed latest version. Now in Thunderbird "Use Primary Password" is clicked so I can't reset primary P/W. Previous P/W doesn't work because there is no P/W there as far as I can see. Instructions I found: "Tools> Developer Tools> Error> etc. There is no "Error" button. Instead I get Incoming Connection (attachment) and an other screen that I don't understand. Can you help please? Thank you Ilio Pieroni

I have been using 4 email accounts with TB for years now with no problems - 2 use IMAP gmail accounts and two POP mail accounts. In the last week, when I open TB (on a mac OS10.15.7) I am asked to enter the password for these two accounts. I have not changed the passwords for these two accounts anywhere else so I don't know why TB suddenly wants me to enter them. No matter what password I enter here, I am told the login failed and am asked to enter a new password. I enter a new password and go back to being asked for passwords again.

What password is TB looking for? Where is it stored so that I can look for it? When I go to Settings/Privacy and security/Saved passwords only passwords for the two gmail accounts are shown. Where can I find the passwords for the POP Mail Server and how do I reset them?

Hello,

i have a mailserver with a catch all function and give out only customized mail adresses. Think "paypal@domain.com".

That way i know exactly who "lost" my mail address to a spammer.

However when i want to reply, the sending mail address defaults to the one i am logged into.

Is there any possibility to configure Thunderbird, that the sending mail for the reply is equal to the receiving one i am replying to?

After the latest update: Every time I send a message and have selected at recipient, the program searches for a cetificate, allthough encryption is swichted off. A box appears for each recipient for about a minute, unless I stop the search (see image). Essentially, the program acts, as if I had selected encryption. This was newer an issue before latest update.

I was subscribed to a large distribution list, but then unsubscribed. But I didn't unsubscribe. So I subscribed again, but was soon unsubscribed again! My email address and password may have been hacked. So I logged into my Comcast ISP and changed my email password. Then I started Thunderbird, and as expected, it asked for my password, and I gave it. My email came up. I tried sending an email and it asked for a sending password. I ignored it, but after a long delay, it refused to send the message. So I tried again, this time giving it my new email password. The sending then worked. I assumed all was now OK.

But, as a final test, I exited Thunderbird, and then restarted. It again came up OK with my emails shown. Then I again tried sending a test message to myself. But it again asked for my sending password! Thinking this might be a scam, I put in a password of "bullshit". Then I received the following popup message:

Sending of the message failed. An error occurred while sending mail. The mail server responded: Polite people say HELO first. Please verify that your email address is correct in your account settings and try again.

What!!! It sure seems like someone (at Thunderbird?) is in the loop grabbing my password before encoding it for storage. A similar thing happened in the past, where I think my account was hacked. So, was this a hacking attempt, and if so, was it from Thunderbird software or my Comcast ISP?

I have 4 e-mail accounts in TB, and I want to switch from the current default account to another. But how do I do that. I cannot see any button, place where to do that in the settings. Why the heck does TB needs to be so tricky to deal with, compared to Outlook?

I am having issues with Thunderbird not retaining my email server and passwords. Each time I want to send an email, it prompts me for the password and then tells me that the email address and server don't match. I have tried numerous times to correct this, but it doesn't hold the information. It also switches the server info between accounts. I have 3 different email account and sometimes only one works correctly

We are using three locations to send emails from this email address. One of the computers at one home, sometime in mid April, was put into a block of some kind for having a PUP (the best I can figure out, don't really understand this stuff.) We had the block removed and most emails are now going through from that one computer. The other computers never had a problem getting their emails to the recipients. The one computer that had trouble, now has Maleware Bytes and Adwcleaner installed, that's what we did to get out of email jail I guess.

The problem is, any of the people that we attempted to email during the week or so that our email was in jail, even though it is fixed, our emails to those people are not getting to them still. We have to use another email address to get them to receive from thunderbird sent from our one computer.

We are not super computer savvy as far as this behind the scenes computer technology goes and need help so that we can reach all our customers reliably. We did try to identify if we were still blacklisted and saw 1 hit but don't understand how to fix it now that we have the additional spyware type stuff added to our computer. Your assistance would be greatly appreciated.

Thank you

'Sending of the message failed. Unable to authenticate to Outgoing server (SMTP) mail.btinternet.com. Please check the password and verify the 'Authentication method' in 'Account Settings | Outgoing server (SMTP)'.

Hello

I have been using Thunderbird as my email service and not had this before. Yesterday, I had to change my password for emails with BT. I changed it on Thunderbird too but now I am receiving emails OK on Thunderbird it is refusing to send any for me and shows the above message. I can send OK from my web based BT email but prefer Thunderbird.

I haven't a clue what I need to do to solve this.

Can you please help? Please tell me is very simple steps I'm not very computer savvy.

Thank you

I had to change my Google account and therefore my Gmail password due to a reported security breach. I've successfully changed my password for Gmail on my iPhone and iPad but I can't on T'Bird.

I expected that when I opened T'Bird, I'd get an error message saying my password was invalid and then prompting me to enter the new password for my Gmail account. That's the way it used to work and it worked well.

Instead, I get some sort of useless error message about STAT (??) and my credentials are invalid. I get no prompt to enter the now changed password. I get no info as to WHAT credentials aren't valid.

So I opened the Password Manager, found the Gmail line, entered Show Passwords and then edit password. I entered the new password, double checked it and closed out the Password Manager. I get the same useless message about STAT. The old password was *not* the Gmail password.

I opened the Password Manager to find the password is entered correctly. Why is this simple operation so miserably difficult? The old method worked perfectly every time now this one won't at all.

Hi, like other users on this help service, I recently lost the ability to send smtp gmails on one specific gmail account, but receiving emails was OK. Every attempt to send brought a "send failed - enter new password" dialog box. I looked at a great number of "solutions" before I found one which almost worked, but I have modified/clarified it and post it here for others to try. First off, look at passwords in Settings, and check that you have an 0Auth2 password - very long and not anything you chose. Then go to Server settings, scroll down the left hand pane past all the accounts listed until you find "Outgoing Server (SMTP) and click on it. This lists your outgoing SMTP accounts. Highlight the one for the account which is not sending and click on "Edit" Change the authentication method to 0Auth2. OK your way back. Now go back to your displayed passwords and copy the 0Auth2 password from the incoming password box and paste it in the SMTP password box for the problem account. Now close TB and restart. When I did all this, it began to send emails again. Hope it helps someone else.

On my Win 7 box, Thunderbird seems to be having access issues with my profiles. It can only find my profiles when running in administrator mode. I've tried resetting security info on several files, but have not found the right one. How can I find the culprit?

I have imported a public key in my openpgp key-management/ In my settings of the end -to-end keys: preference of key technology: choose auto the key technology by the available keys. I have read openpgp standard supports inline en s/mime encryption but what is used by thunderbird when I choose openpgp as key encryption when i type/send an email (w/o attachment by myself). I ask it because my correspondent only decrypts inline encryption.

How do I disable automatic translation of Thunderbird messages by Deep-L (or any other machine translator)? This morning I received an email from a family member, written in German. Underneath the original message was an automated translation into English by Deep-L. I didn´t ask for this translation. I speak German as a second language, as well as other languages, and I enjoy using my linguistic abilities. Furthermore, I don´t like my private messages being passed to a database without my permission. If I want a translation of a message, I´ll ask for it.

This is evidently a new, annoying feature. I had an email exchange in German with someone just a few weeks ago without this intervention. I have tried searching the settings tab on Thunderbird, but have not discovered anything about Translation settings (not under Language settings, as far as I can see).

How do I disable Thunderbird sending emails for unwanted translation? Thank you for your assistance.

Hello;

Using Thunderbird v115.10.1 (64-bit) on Windows 10 PRO.

Once a month or so, I need to send some emails from another application. Keep getting the warning about "Another application is attempting to send mail using your user profile" (image attached).

OK... a very good warning.

But... I don't want to have to click <OK> every time an email is sent.

So... I unchecked the checkbox.

Warning gone... works great.

Now... I want to re-enable that warning in case a rogue application tries to send an email.

Have looked, and looked, and looked under \Tools\Settings and \Tools\AccountSettings.

Can not find how to re-enable this (if it's there I am looking right at it and not seeing it).

Can anyone help?

Also used regedit to search the Windows registry, but could not find it.

Also... is there a way to change settings from a CLI (would be nice to disable this warning, send the emails, then re-enable is all programmatically.

TIA.

Bo...