Thunderbird Support Forum

Why won't Thunderbird send emails when connected to NordVPN? I have spoken to Spectrum and NordVPN and both of them have suggested that Thunderbird is the issue. I have confirmed that my SMTP settings are correct. I can send and receive from the Web client's site. I have turned off NordVPN and the sending process works as expected. However when I turn NordVPN back on, my outgoing emails are blocked.

Changed Gmail.com password and now Thunderbird will not login even with the new verified password. I have tried all recommendations on the internet and nothing works.

Is there a way to stop initial pop ups when opening FireFox? They slow productivity! I don't need to be reminded that I have new emails when I am already in Thunderbird.

Can't get out of offline mode. It happen once previous but an icon was available and got back on. Now going to settings and nothing works. Surprisingly found nothing with Google nor Mozilla support. No email; big problem.

The offline option does not give off or on but option that I don't understand.

The file at the top shows offline and there doesn't seem a way to change (no check mark).

The moderator, 10 years ago, said uncheck on life or two blue line. No such think.

Computer is connected to internet. Shut down MAC and restarted. Still OFFLINE. I must be online but cannot download my messages.

Please help

We have recently moved to a new mail server. We currently have about 20 Thunderbird email clients on Windows in an office location and a macOS home machine. On all machines email is configured to use IMAP on hostname.com port 993 SSL/TLS with Normal Password and SMTP on hostname.com port 465 SSL/TLS with Normal Password.

The home machine is working 100% with no issues, it does have a much faster and lower latency internet connection than the office machines.

Many of the office machines are experiencing intermitent SMTP error messages when sending, intermitent, "unable to save mail in the Sent folder of the Inbox", messages and intermitent unable to move messages between folders.

I have checked and double checked the settings on affected machines - however, I believe a settings issue would result in nothing working, not intermitent functionality. Plus all is working fine on the home machine with the same settings (different OS, but ports and security settings all dictated by server).

With one client behaving properly, the server likwise behaving properly when addressed by the working client and the intermitent nature of the problems we are finding, I suspect we have some sort of network issue. Somthing timing out or a firewall/AV software causing a delay.

I have increased mailnews.tcptimeout on affected machines to 250 based on a forum article but this has had no effect (No idea of units here but if it is seconde then I am not supprised - the SMTP errors, when they happen are almost instantanious).

Any ideas on how to trobleshoot this problem further - The problem seems to get worse through the day, although that may just be peoples tollerance of an intermitent issue going down.

Hello, When sending a message from my gmail account within TB, I would like to automatically attach one of my other adresses as bcc: . How can I do that ?

As an alternative, is there a way to automatically copy the message in my sent folder in my gmail account to my local sent folder ? Using a filter perhaps , but I have been unable to create a filter that operates on the Sent folder.

Thank you, Alain Damlamian

I set up a new Windows 11 PC (64-bit) about 2 months ago, and installed Thunderbird Supernova. I allowed MTS to choose all the settings and everything was working fine until about 3 weeks ago I am now running version 115.11.1 (64-bit). I noticed that many messages I recieve at scheduled times every day were not appearing in my MTS message list until sevveral hours (a few actually took 3 days) after their normal delivery times. Checking with the senders revealed no change to the time they were sent. Looking at the messages when they appeared showed that they WERE received on time. Logging into the web interfaces for Gmail and Comcast/XFINITY email revealed that the messages were arriving on time. The only logical conclusion is that MTS has a problem in its IMAP protocol implementation that does not recognize new/unread messages as such, and therefore does not retrieve them. I am legally blind, and up to this point, mTS is the only fully accessible, easy-to-keyboard-navigate email program.

Exported address books and lists from 115.12.1 (32 bit) on W8.1, importing to 115.11.1 (64 bit) on W11.

Importing a named list into personal address book works - but the list itself is lost; they all go into one big address book. If I choose Create a new folder they all go into that - but again I've no list name, I can't write a message to the list like I used to be able to.

I can select New Mailing List, give it a name, but now I seem to have to enter each one individually, I see no way to paste in a list.

What am I doing wrong please?

Hallo, durch eine Unachtsamkeit habe ich das Hauptpasswort (Primäres Passwort.) von Thunderbird gelöscht. Ich finde auf den Hilfeseiten keinen Hinweis wie man da Passwort zurücksetzten kann. Dadurch komme ich nicht mehr an meine Mails. Freundliche Grüße

Hi, I just reopened Thunderbird after my computer was shut down automatically after a Dell firmware update. I had 15 email tabs open before this -- things I wanted to go back to or that reminded me to do something. They are now empty! I have gone into Troubleshoot mode a couple of times and restarted Thunderbird. I've also checked the "remove addons (or something like that)" check box. No luck. Can someone out there help? I'm going to try restarting my computer now. Thanks!

I have a Windows 10 pc, which is current with all Microsoft and manufacturer (Lenovo) updates. Thunderbird won't run since the last update. It just gives a message saying, "Your computer must be restarted to complete a previous upgrade of Thunderbird. Do you want to reboot now?" After several reboots, I have given up. A support forum solution from 4 years ago recommends deleting a file (global-messages-db.sqlite) at a location (C:\Users\user\AppData\Roaming\Thunderbird\Profiles\8charstring.default) that seems not to exist (hidden?) on my pc. What do you suggest? Thanks.

I know this problem has been discussed extensively, but I can't fix it even after reading the previous posts.

I have an institutional email address that uses outlook.office365 server and mandatory two factor autentication. I had my Thunderbird setup with this, which suddenly stopped working one day on my office PC. I updated Thunderbird to the newest version, but the issue pertains. Currently I'm running Thunderbird 115.12.2. on a Windows 10 machine.

When I try to fetch my emails from this server, a popup window appears that asks for my institutional login credentials. When I enter them, a second window appears, asking for the two factor autentication. However, this window seems to be corrupt, as it does not contain any information, and and it's impossible to type in verification code, as there's no input area at all (see the first picture - note that I'm using a localized version of Thunderbird).

When I click on Privacy and cookies in the right bottom corner, then two lines appear (although without any labels), where I can type in my verification code (I guess that it is the second line, because it shows dots in place of the typed characters, as for passwords). A screenshot of this window can be seen in the second picture.

However, after typing the correct code and clicking on the grey button, the first window reappears, this time with my email address that keeps flashing forever and nothing happens. It does not even matter if I type in the right verification number or just anything, it produces the same behaviour. As a result, I can't log in to my mailbox, which is operational, because I can log in there through the web interface of outlook, and also from my laptop using Thunderbird 78.14.0. I also made sure that the server name and authentication methods are correct (outlook.office365.com, port 993, SSL/TLS, OAuth2).

Do you have any suggestion how to solve this issue?

Many thanks.

I have received an email from Microsoft informing me of changes to its authentification procedure. As from Sept, to continue using Thunderbird to access my outlook/hotmail accounts, I have to change the authentification method to Oauth2. The reasons and changes required are detailed here: https://support.mozilla.org/en-US/kb/microsoft-oauth-authentication-and-thunderbird-202 I have 2 problems. 1. imap-mail.outlook.com - I can change my authentification method to Oauth2. However, when I then try to access my mail via TB, I get an error stating that the server imap-mail.outlook.com does not support the authentification method! (see image) 2. Outgoing Server SMTP There is no Oauth2 option available to choose!

Can anyone help? I am using the most up to date version of Thunderbird 115.12.2 (64-bit).

I received a notification from @hotmail and @live that I won't be able to receive or send mail after Sept 17th without taking action - what steps should I take when I don't have Microsoft Office 360?

WHY is it that I can get into my email account through Thunderbird and download mail, but when I try to go into the account manually I can't? I go into the settings copy the password, then manually input it into gmail, but it says it's the wrong password? I am using MacOS 10.14.6, and Thunderbird 115.12.2 (64-bit)

Thanks.

I have used Thunderbird for many years. I had a problem viewing a jpg file that I couldn't resolve and decided to uninstall Thunderbid to install it again. Mail is working smoothly but I can't access my multi-year Calendar. I've tried several alternatives with no solution and I really need help please. I'm in Portugal and I'm Portuguese. My English is Google Translate's English. Thank you.

Whenever I select an email in my Inbox which has attached files (of any type) i get this pop-up, one for each attachment. https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2024-07-02-00-10-20-f3ab8a.png This has only been occurring since I updated to Ubuntu 24.04 and Thunderbird 115.12.0-2 If I click on the "Find more in Software" button I get a message 'Failed to execute child process "Gnome Software" (No such file/directory)'. I have searched for a solution but can only find a reference which suggests that the problem has something to do with Evolution, (the file handler, not Darwin's theory). Any suggestions? Cheers Ian

Updated Thunderbird to 117.12.2 on the 25 June 2024. Since then I am not receiving emails on my computer. I have actually sent some emails but they don't save into the sent folder and I have had a "Add security exception" warning occured when sending.

So problem is not getting new emails since the latest update was loaded. Thanks Neil