Thunderbird Community Forum

I have a new gmail account and I can't figure out how to get Thunderbird to show me messages that come in to that address. I changed some things trying to set up a second account but emails still don't arrive. I am using a desktop computer with the most recently updated Windows 11 and updated Thunderbird too. What am I missing?

Hi, I’m having a recurring UI issue in Thunderbird with the toolbar above the message preview pane.

After some time of using Thunderbird, the area between the message list and the message preview becomes visually corrupted. The toolbar where the Reply / Reply All / Forward buttons should appear either disappears completely or turns into a broken/glitched gray bar.

I attached a screenshot showing the problem.

What I already tried:

Restarting Thunderbird Starting in Troubleshoot Mode Disabling all add-ons Resetting UI/customization settings

These actions help only temporarily. After some time, the issue comes back again.

Additional info:

Windows 11 64-bit Latest Thunderbird version The problem seems random, but happens multiple times per day It affects usability because I lose quick access to reply buttons and message actions

Has anyone experienced something similar or knows what may cause this? Humanity invented email clients 50 years ago and somehow we’re still fighting disappearing buttons like it’s experimental Soviet software. Beautiful continuity of civilization.

Thanks.

If you turn on "Show Timezones" in the New Event window, then close it, and open a New Event window again, the time zones will be shown, but the option will not be checked in the settings, checking it now will hide it instead

When I go to set a custom time for when an event's reminder will happen, it doesn't matter what date or time I put, when I click OK, it sets the date to be today, and the time to the next hour, if I use the date and time picker dropdown thing (clicking the arrow instead of typing it in), the date does set correctly, but the time is impossible to set even like that

Video

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.

I have tried multiple times to setup a new Outlook email to Thunderbird. I already have one setup and that's fine, but when trying to connect my new email account I keep getting the error

exchange auth error

I've tried everything to fix it.

The setup configuration all goes well, but then connection just won't happen. I've checked in Outlook and I have given Thunderbird permission but still it won't work.

I have the latest Thunderbird on my laptop. I have turned off the hub, but it still appears when I add an account. Sigh!

Please help!

I keep my mail (both sent and received) in local mail folders. My server is gmail, and sent mail is put in gmail's sent folder by default. Every few months, I copy those messages to a local folder, and after I back them up, I delete the server copy.

What to my dismay, I discovered today that only the message headers, and not the messages were present in the local folder, though they had been when downloaded. Looking at the file sizes, I found the sent file to be 0 Kb, and sent.msf 255 Kb, when sent should have been around 60 Kb long.

I have been able to restore the messages from backup (whew!), but I have no idea how then sent file was wiped out. I know I did not do it.

Has anyone else had this happen? Is there a preventive measure I should take?

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

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 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?

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

Firstly, both laptops are working well. While one is still behaving quite normal, I am unable to install Mozilla Thunderbird on the other after having done a reset .. The "HUB" will NOT except my personal details i.e. email address & PW which I've used for years. I'll leave it at that for now ..

How could I have multiple email signatures for one account, like: - One very simple with name and email - One with company name, adresse, email, LinkedIn link.. - One blank

Email will not send. Message-- "Sending of the message failed. An error occurred while sending mail. The mail server responded: Email rejected. Please verify that your email address is correct in your account settings and try again." I am not sending to another person but testing with my personal email. Thank you.

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....