Yonke imikhiqizo Community Forum

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,

Thunderbird causes my machine to 'hang' from time to time,

1. often for up to a second and usually a number of times in quick succession on each ocasion. Sometimes this happens frequently - say every 5 or 10 minutes - sometimes only after an hour or more since the past occurrance.

2. My machine hangs completely - nothing will work, mouse, keyboard, sound, other apps etc. If I happen to be typing (into any app - including Thunderbird - when this happens, input ceases, the cursor freezes and - if the problem persists for a second or two, Windows reports "[app] is not responding"

3. I cannot be certain, but I believe the problem occurs whilst messages are being retrieved.

This is a very serious problem as it means that I can never leave TB running as the problems it causes are not acceptable.

4. This means I cannot deal with incoming messages without periodically re-starting TB - which is an utter PIA.

I am running Win 11 Professional on a 2-year old machine with 64 Gb of memory. I have run TB in Troubleshoot mode, I have confirmed that the problem occurs regardless or whatever other apps are running (or none) and I have proven conclusively that no other app causes any kind of similar problem.

Looking forward yto hearing if others have had the same issue and what can be done about it.

I'm getting "Thunderbird can't connect to the server" message, so I can't download messages. However, a message or two will finally download 1-2 hours later.

Same problem on 2 laptops, both running Windows 11. But I know my emails are coming in as I can view them via Spectrum webmail. So the problem isn't the Spectrum servers.

I've logged out and back into Thunderbird, and have re-booted my laptops. No luck. What to do?

Also, is there a place to report problems directly to Thunderbird?

Thanks for any help.

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.

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

Okay, so how to be simple. I kept getting a pop-up from Comcast about a latest promotion and it wouldn't go away. I spoke to Comcast about their ridiculous pop-up promotion, it was coming through my Thunderbird email client. That may be taken care of. But in the meantime I tried to delete my main Thunderbird account, I must have done so and now I can't get it back! I've tried everything! I was using an IMAP account, and for my incoming I had imap.comcast.net. For my outgoing I had stmp.comcast.net and the ports were 993 and 587 I believe. Please don't quote me on this. So when I try to create a new email account using the same information I keep getting an "Authorization Error" each and every time!

So....since and while writing this email, the Comcast pop-up continues to pop up, and I still cannot reset my email account. Talk about a frustration level at this point! I would like to keep my Thunderbird email account minus the stupid Comcast pop-up. I just don't know what to do. Please help from anyone who can!

Thanks,

Michael....

I have created an account instance in account settings, and the "Test connection to server" says it is OK, but when I go to the mail tab the get messages button and New Message are grayed out an NO accounts are listed in the "folders" area. Not does it ever ask for my password to the SMTP server I have selected. I have an existing account with my own email service (Hover), and MUST connect to that. This is critical, as I need my e-mail to accomplish necessary activities.

Hi. Since the last 2 updates, my Bell sympatico email through T-bird cannot SEND anymore emails (No errors are given but the email never comes through). I can receive emails without issue and when I use another tool (like Outlook or go directly through my browser, the sympatico emails come through) I attached the settings for the SMTP in a screenshot if that could help.

Any idea how to fix this?

Tx, Robert Z.

When I try to open Thunderbird it keeps giving me a message that it is trying trouble install a new helper tool and asks for my password. I do so, hit the Install Helper button, and then nothing ever happens. I get a spinning beach ball and it never opens no long how I wait. I would be very grateful for any suggestions or advice on what to do.

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 have multiple email adresses for different purposes, but all of the incoming emails are sent to the Local Folders inbox, where I have separate folders to save emails for the each purpose. I am able to manually sort the folders in the order that I prefer, however each time I shut down Thunderbird and then restart it, the folders end up in seemingly different random order each time. Is there a way to ensure the manually sorted order of the folders does not change?

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

Hello,

Everything working just fine last night. Wake up and Thunderbird will not retrieve emails.

Remembered this old message I got so I went through and deleted my second email address, didn't help.

https://support.mozilla.org/en-US/kb/thunderbird-and-yahoo

Checked all settings compared to Yahoo, still won't download messages. I can even send a message with my current settings no problem, and it does login, just won't retrieve emails. Gives me a connection timeout.

Anyone have any ideas?

When I delete mails they remain in the Gmail All Mails folder. I have set the setting to move deleted messages to Trash (attached) and I always Empty the Trash manually. In All Mail all the deleted mails are present. In the attached screendump from Gmail webmail it is the mails without any labels in front. (I have unsubscribed to All Mails in TB, but previously these messages would show up as only present i All Mail when searched in TB). Is there a synchronization problem? I have noted that there are two Trash folders in Gmail webmail: 1. in:trash (where Gmail webmail is putting deleted mails which do NOT show up in All Mails) and 2. label:[imap]-trash (where TB is putting deleted mails which DO show up in All Mails). Is that the problem?

Additional question: is there an easy way to permanently delete the mails without label i All Mails?

Thunderbird stopped working a week ago, and I've wasted HOURS trying to uninstall and reinstall the app in hopes of getting it to work. Best I can do is get it to run, accessing my gmail account, but I'm interrupted repeatedly by screens asking me to choose my gmail account, followed by a screen that asks me to click on a 'give access' button that appears nowhere on the screen. Such a shame that you folks and Google have collaborated in a way that makes a very nice app completely unusable. If you and Google can ever get the access issues resolved, pls advise via email and I make one last attempt to get the app to work: rws.pgh@gmail.com.

I've noticed that if I attach a file to an outgoing message then use ctrl+enter to send the message, Thunderbird also opens the attachment. How can I prevent it from doing the latter?

I use the filters in Thunderbird a lot, so I am familiar with the setup. I need to automatically forward a message to my wife if it comes in from a specific email address. I cannot see a way to do this. Is it possible?