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I have had an online newspaper subscription for quite awhile and suddenly the paper stopped coming, soon after I had paid for another year. I emailed the company and they said to "check my spam folder" but I want all spam to come to my inbox so I can see if it is really spam. I also got emails from a scrapbook company I buy from frequently and those emails have stopped coming also. I am wondering why those emails are no longer coming through, and if there are other emails that also are no longer arriving that should be coming to me. And how to get them to come again? The newspaper is Casper Star Tribune <trib.com> from Casper Wyoming The scrapbook company is Echo Park Paper Co <Echoparkpaper.com> Thank you for your help it is much appreciated,

Hi, I dont know what setting I have accidently changed but before I used to double click a new message in my inbox on local folders and now instead of reading it full screen now it wants to send it as an email message to someone!

Any ideas to put it back to just read the email and not compose a message with it?

Thanks.

I dont remember having this 'new message template' thing before when I right clicked on a message in my inbox , maybe thats what the issue is?

I have had Thunderbird on my HP laptop for several years. Everything has worked perfectly. BUT, I cannot receive Email, starting yesterday. When I click the Get Email icon, nothing happens. My Email server on Comcast is getting Email which I can see and read, but Thunderbird is not getting the Email. I would appreciate any advice.

Regards, Jim

I am unable to send emails because i get an error message :"sending message failed, because connection to outgoing server (SMPT) smpt,centurylink,net timed out.

Hi,

On Thunderbird 140.4.0esr (64-bit) and on 144.0.1 (64-bit) both WIN11 I have this problem since yesterday:

New message Signature is shown

I add the To: To: xyz@com.com

Signature disappears, mail is sent and received without signature

The signature which I use "since many years" is HTML

As you know there has been an update on WIN11 yesterday...

Any hints?

Thanks for your time

Bob

Today filtering of new emails fails for all folders. The message is "The message could not be filtered to folder <folder> because adding a message to it failed. Verify that the folder is displaying properly or try to repair it from the folder properties."

This is new. No problem filtering message a few days ago.

Windows 10 laptop PC.

Lots of free space on my local drive where Thunderbird is installed.

Where are these folders stored? I looked in C:\Program Files\Mozilla Thunderbird but I do not see any such folders there. I looked in C:\ProgramData\Mozilla but nothing there either.

Thank you.

This just started happening a couple of days ago (after I upgraded to TB 140.5.0esr on a Mac, in case that's relevant).

Every time I type the word "address" in an email, TB changes it to my home address.

Anybody know why this started? And what can I do to turn it off?

Thanks Clint

I had knee replacement surgery on 10/10/2025 and was unable to access my PC to download email. When I was able to access my PC(physically unable to get to the PC until12/7/2025) email had stopped downloading after 10/27.2025 and many of the ones downloaded were multiple copies of the same text. I decided to just highlight a large group of email and just trash them unread. I have now trashed 5000+ emails and the system will stil not display any after 10.27/2025. I am at my whits end, I am a 78 year old retired non-software engineer and really need some help. This is my primary email account and really need to read what's current.

I'm using the latest version (145) and I've setup my office 365 email account. I'm trying to setup my calendar account as well but when I enter location, username and password it says that my credentials were not accepted.

I assume this means that TB is using legacy un/pw authentication which is no longer supported instead of OATH2. There is, however, no option to select OATH2 in the calendar setup process (like there is for email).

Are office 365 calendars supported by TB 145?

For 3 days, I haven't been able to access my GMX email account. It tells me every time "Login to the server imap.gmx.com with username '[edited from public] @gmx.com' failed. I hadn't changed anything beforehand and all the entered data is correct. My other accounts like gmail, yahoo, works just fine. Tried installing older versions and still no success. Outlook app works fine either. I'm pretty sure that GMX mail server made some changes that Thunderbird is missing. Please verify.

Best regards

Nilson Xavier

HI just updated to 140.5.0esr (64-bit) Now all I can see is my inbox and deleted. No Sent or any of the other many folders I could see 5 mins ago ☹️. The server has them all though Some help welcomed!

I have been trying to delete a large number of unwanted emails in my All Mail folder. However, once I delete them they are restored. How can I clean up this folder permanently?

Does anyone else increase the size of the Thunderbird window hoping to see more of the email in the message pane? But instead, we just get a longer index of messages. Then have to move the border of the message pane up. This is only for the occasional need to see more in a single page, but frequent enough that I'm repeatedly having to resize the pane for individual message, then resize it again when I return to my normal window height. Yeah, I know I can open in separate tab, but seems allocating the space to index/message pane on window resize, ought to at least be done equally, if not all to the message pane.

Hello everybody!

Since a few days I'm a bit in trouble with using my Mozilla Thunderbird email system. I do receive emails, but I neither can answer them nor can I write and send emails on my own.

When I try to send a message, this is what I'm confronted with:

Failed to send message. Error sending message: SMTP server error. The mail server responded: IP=212.103.61.109 - Your address is blocked.

Is there anybody who can help me? Would really be great!!!

Thank you in advance.

Klaus Maier

I've been using Thunderbird for years (Windows 11 PC), and all has been working fine as recently as last night. Starting this morning, I continuously get the error message, "Login to server mail.comcast.net with user name xxx failed" (xxx not my actual account name). I've tried the "Retry" and "Enter New Password" options to no avail. I can go directly to the Comcast website, login and get my email that way, but I can't get Thunderbird to login.

To my knowledge, nothing changed between last night and today, but yet something seems to have happened. Any ideas appreciated!

Hi everyone - and big thanks in advance for considering my request: I have/ had windows 11 on my old machine and windows 11 on my new machine; because my 'old computer' is not running anymore at all (liquid damage), I can no longer start Thunderbird and follow the 'export tool function' (https://support.mozilla.org/en-US/kb/thunderbird-export) and thus can only do the manual transfer (https://support.mozilla.org/en-US/kb/moving-thunderbird-data-to-a-new-computer); I didn't think that I would need to go through the export tool steps when I saved the Thunderbird profile folder regularly as backup on the cloud; yet when I started Thunderbird on my new machine following the above steps by moving the Thunderbird profile folder manually, the result is that - although Thunderbird is 'running' and the mailbox is functioning properly - the key folders are empty (i.e. the sub-folder structure is completely lost, in fact there are no individual emails at all); the issue seems to be that the size of the Thunderbird profile folder is too large (the "Profiles" folder has a size of 20.5 GB) for doing this transfer via copy & paste of the Thunderbird profile folder from the cloud (I also tried USB) to the new machine; I understand that the size issue via the manual transfer could be 'overcome' just by starting Thunderbird on the 'old machine' and following the above steps explained under mozilla support; yet that's no longer an option; what could I do please?

I keep getting the sign in request (photo 1) and when I click the next button I get (photo 2), I have no idea what has changed or what I can do to stop it. I would be grateful of any help.