Thunderbird Community Forum

Thunderbird upgraded itself to version 140.2.0esr (64-bit). I also got a new browser tab for Thunderbird 140 Eclipse. However, now Thunderbird will not receive any new emails. I can see that they're out there via my mobile phone. I don't get any kind of message when I try to receive emails. It's as if it's totally ignoring my request. I have two email addresses - it will not work for either.

Additionally, I am able to send emails out to a gmail address. So the only issue seems to be receiving emails.

Specs: - I have a Windows 11 laptop. - I'm using POP3 (I know, my friends are giving me crap. But I want to keep my emails on my laptop, not on the server. I'm old school that way.).

I've tried requesting emails the following ways: - Hit F5 - Click on File | Get New Messages for | All accounts - Click on File | Get New Messages for | Current account - Click on File | Get New Messages for | <choose the individual account>

I've tried the following to resolve the issue, without success: - I saw online where someone mentioned a bug with the new version. They suggested creating a default account. I already had a default account, but changed it in hopes that it would help. However, it didn't. - I deleted the global-messages-db.sqlite file to try to rebuild the profile (this was also suggested online). The rebuild was successful, but I still could not receive emails.

Can you help me? Thanks very much!

Ken Zwyers

I mucked up my decades old Thunderbird e-mail account on my desktop. After a password change in Spectrum webmail, I lost the ability to receive and send e-mails using my old pop-server account. I tried many things at this communities recommendations but no success. So I changed the name of my old e-mail address and then created a new email account with my former e-mail name and also set up the new e-mail account to an IMAP account. Then when prompted for a password, I correctly inputted the Spectrum webmail password and now I receive e-mails to this account on Thunderbird! Hurray!! However, I still cannot send out e-mails from this account as I get the message that the outgoing server "(SMTP) mail.twc.com" timed out. And no - it is not an antivirus issue.

By the way, my phone e-mail account of the same address is able to send out e-mail messages. However, I wish to handle my most sensitive messages to send off of my desktop version of the same e-mail address and that is where I am not able to send an e-mail.

Yikes - Thunderbird.

To my new computer Thunderbird has just fetched the INBOX-mails from the IMAP-server, not my many subfolders, not the SENT-folder, not the SPAM-folder. This has previously worked when I changed to a new computer. How do I get Thunderbird to transfer these mails.

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

I have Thunderbird 140.1.1esr (64-bit).

See the attached image. Just today emails started to show up oddly: 1) in the list view there is no subject or correspondent and 2) the message body begins with some message headers in text format and is followed by the HTML message source in text format (i.e. the message's HTML code).

I use an Earthlink POP3 server. These odd messages look fine when I access them via Earthlink's webmail interface. Even so, I suspect this is an Earthlink server issue, but maybe someone using a different email server has seen the same odd behavior?

Why does it take 30 minutes or more before Thunderbird downloads the new messages for the day. Most of the time Thunderbird will not download new message for 30 minutes or more. And some times it will let me know i have new messages and not download them Pleas help. I must have missed some indicator

Thank You Richard Merrell <redacted>

A "send later" button came up one morning instead of the usual "send" button. When I clicked on the write button to see where the "send" button was, several choices came up but when I clicked on the "write" choice I lost the other choices and now can't get back to the original write button and still no "send" button appears anywhere on the menu. I can save messages to Draft but still can't actually send them. I can still receive emails, just can't send them! Help!

After getting fed up with the Outlook app on windows. I decided to switch to TB. Now i can recieve my mails but can't send. I don't Use VPN and also checked if Windows Firewall is screwing things up. But those are allowed

Without the following. Unable to login to server (SMTP) smtp.office365.com with username *****@hotmail.com has failed (Translated from dutch)

These are my Settings incoming IMAP server: outlook.office365.com, 993, SSL/TLS, OAuth2 authentication, User Name = *****@hotmail.com outgoing SMTP server: smtp.office365.com, 587, STARTTLS, OAuth2 authentication, User Name = *****@hotmail.com

Been getting a bunch of this, usually in my TB TRASH folder, I think from the Outlook online server.

The server couldn't retrieve the following message:

Subject: "<Removed for PII>"

From: "Not available" ("Not available")

Sent date: 10/31/2024 2:25:02 PM

The message hasn't been deleted. You might be able to view it using either Outlook or Outlook Web App. You can also contact the sender to find out what the message says.

I have 2 personal email accounts: Outlook and Gmail. My client is Thunderbird. Running Win11 25H2. Far as I know, problem began recently. This is a screenshot of some messages from TBirds TRASH folder.

User's image (In images) Thunderbird just tried to fetch emails. Got a notification that it could not get messages, this time from GMail.

What does this mean? Outlook/Gmail servers or Thunderbird? What do I need to do?

I am having an issue with retrieving my email in Thunderbird. On laptop, using Version 140.2.0esr | Released August 19, 2025. No changes were made to Thunderbird settings. The email is showing up in the Comcast portal, but for now having it forwared to a Gmail account. Tried changing password in Comcast (and in Thuderbird) to no effect. Tried deleting my Comcast email account in Thunderbird and re-adding it, but no change. Can send out email fine, just receiving it is the issue.

Interestingly, I use BlueMail on my phone and it, too, has the same issue and will not retrieve from Comcast. Thanks in advance!

Thunderbird can not receive emails but it can send them. Password is correct.

  ( Login to server pop.verizon.net with username ... Failed
    Connection timed out)

Account Settings -> Server Settings:

   The certificate for pop.verizon.net:995 appears to be valid.
   When viewing the certificate it is out of date.
   No option to add an exception here or under Manage Certificates

On another user on the computer Thunderbird is working.

Thanks

Thunderbird will no longer send E-Mail but still works for incoming E-Mail. It provides the following error message:

Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) outbound.att.net failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again.

The Outgoing server is configured as follows: AT&T / outbound.att.net / 465 / SSL/TLS / Normal Password / E-Mail

This configuration has not been changed in years. Everything I can find on line suggests this configuration should still work. Any suggestions you could provide would be appreciated.

Tom

I am trying to send a message to my cousin Gundula Loude whose e-mail address is gcloude@bluewin.ch. Unfortunately, the message is blocked for a reason I do not understand. There has been one other e-mail complaining about this problem but I do not understand why the blocking still prevails. Can you investigate and let me know how I get round this deliberate blocking.

I have two email accounts, one is hotmail.com, the other is on outlook.com

The SMTP for the outlook account works fine, but Thunderbird puts that same smtp details into the Hotmail account smtp. That also puts into the Hotmail username, the outlooks email address.

If I try to send an email using the Hotmail account, I get a message saying 'Hotmail can not send using xx@outlook.com

If I use the settings to make the username xxx@hotmail.com, it puts that into the smtp of the outlook.com address then that will not send giving the same fault. This has only started this last couple of days, nothing changed in the settings.

This only occurs on my Desktop. On my laptop with same settings it works fine.

Thunderbird is showing up to date?

Help Gerry

Hi,

I recently installed Thunderbird on a news Windows 11 computer. While setting up the account, I made the mistake of changing my gmail account from imap to pop3. After changing the settings in my account to allow this change, Thunderbird started downloading thousands of old emails. When I realized my mistake, there was nothing I could do to stop emails from downloading. Even after disabling pop3 in my account, the emails continued to download. Unfortunately, I haven't got the time or patience to delete thousands of emails one at a time. I tried uninstalling Thunderbird and reinstalling using IMAP instead of POP3. No luck. The emails continued to download.

Is there anything that can be done to stop this?

Thanks, Ed

Hello,

I have settings set in account settings to apply signatures on replies and forwards, however it is not happening. What else can I change?

Thanks, Taylor

Error msg:

Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) outbound failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again.

Attached screen shot.

After changing my settings for incoming and outgoing mail servers, Thunderbird still times out. Also, I changed the yahoo server settings to imap but the server type shows as POP. Is that causing the time out problem. Here are my current settings: Yahoo Server Type: POP Mail Server Server Name: imap.mail.yahoo.com Port 993 Username: dragracers@cox.net Connection security: SSL/TLS Authentication method: OAuth2 DOES NOT ask for account or anything else.

Description: Yahoo Outgoing server: smpt.mail.yahoo.com Port: 465 Security and Authentification: Connection security SSL/TLS Authentication method: OAuth2 User name: dragracers@cox.net Does not connect with a time out approx. 30 seconds later.