Thunderbird Community Forum

Version 140.10.2esr | Released May 8, 2026 I get this message every time: Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) mail.twc.com failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again.

Thank you, George Correia

Hi,

On one of my accounts I have an enabled filter for incoming messages consisting of a Tag + Copy + Delete (see screenshot) When a new message arrives, the filter is executed TWICE (see screenshot of the log) , the copied message arrives TWICE at the destination (once tagged, once NOT tagged). In the deleted folder of the source there is only one message.

What might be gong on ? Why is the filter executed twice ?

PS : I also tried Tag + Move instead of Tag + Copy + Delete

I'm on a new Windows 11 desktop with two monitors. Everything's been working just fine up until around 26th April (two weeks ago) when the native Thunderbird new mail notifications started appearing in my second monitor, rather than my main display. I had made no changes at all myself.

I've been through all the fixes suggested via Google (toggling the displays; checking Windows notification settings), but none of those fixes have made any difference. I switched to using Windows system notifications for a while, but I really don't like them.

Might this be something in a Thunderbird update itself? It just doesn't seem to be detecting the primary monitor at all. All my other app notifications continue to show on the primary display.

Has anyone else encountered this or have any other solutions I could try?

Thanks, Averill

Thunderbird Only Provides My E-Mails of the past two or three Weeks on my mobile phone and on my Laptop. Die Older Mails kann online be accesssed on the Vodafone Webpage. How can I synchronise My Account?

I am trying to re-install THUNDERBIRD I have done this several times before but Google is causing problems When I reenter my Name email address and password Thunderbird finds the email but then it takes me to google and I have to click allow but then it takes me back to the email install and then tells me it cannot find the Email address with the settings

THE SAME SETTINGS IN FOUND 1 MINUTE EARLIER

I have 2 email addresses and it does the same with both so Thunderbird does not now work on a Computer that I have used Thunderbird for Years

Ever since one of the recent updates, my new email notification box is showing up on wrong monitor. I have a 2 monitor setup, the notification box is now showing up on the second monitor. I have tried turning the option off and back on but makes no difference.

For two days I'm having intermittent "hanging" when I'm typing a document or letter in Thunderbird. It has just dont that for the 2nd time in less than 10 minutes. Don't know what's happening but it's very frustrating. Am not having any other computer problems. Am running Windows 11 which is automatically updated by Windows. I think Thunderbird is the most current version too. Help please anyone! It does say "(Not Responding) at the very top of the page.

RE: How to turn OFF message preview when I single-click on message?

When in TB message list, and selecting a message for an operation by making a single-click on the message, the selected message opens. When using CNTL key to select several messages together for an operation, each of the messages opens an individual preview pane. I have searched TB's knowledgebase, but apparently no other users have this problem.

I use Thunderbird to store loacally some email from gmail and delete it from the online server.

Until october last year it was working flawless, to day I need to read an old email and I discovered that locally since october of some email is only stored the subject and somtime I only have the ticker that increase in the stored email email, but there is either not title or subject. I didn't change any setting in my computer or in the antivirus,, the only thing is that I perform the update of thunderbird as usual. Is it possible to recover these emails or they are gone forever?

Best regards

I'm running Thunderbird 140.5.0esr (32-bit) on Windows 10 Pro Build 19045. After the last few updates the columns in the email listings are changing widths from what I've set them, this seems to happen after I close then reopen Thunderbird; which I'm having to do more often these days to resolve weird calendar malfunctions. For instance, the data column would appear so narrow that only the month/day show with "..." at the end, when I know I've looked at this yesterday with the full view of the date and time showing. I've reviewed my options and I've set them individually, set them globally and it makes no difference. Of course I've rebooted, etc. I have over a hundred local folders and they all change differently, of course some look the same but others don't. Most have the same column headings selected but it doesn't seem to matter. Some have the "Correspondents" column selected but many don't.

This is very irritating and I'd like to know why Thunderbird is doing this, and more importantly, how can I prevent this behavior in the future. Thanks,

I start to make a new email message. I start typing in the recipient's email. Auto-complete finishes the address but misspells it. The recipient's email in all the address lists have it correctly. I recently saw the light and came over from Outlook. I imported my Outlook address list. It was correct in Outlook. Newest version of Thunderbird. thunderbird-MSIX - 1.0

I have moved my Thunderbird data from drive C:\xxx\Thunderbird to N:\xxx\Thunderbird. The Thunderbird program remains on "C:\Program Files\Mozilla Thunderbird" How do I tell Thunderbird to find its data on the N: drive?

     Thank you,    Art Lieberman