I-Thunderbird Community Forum

why just today is all my incoming emails coming to trasha nd not my in box in Thunderbird worked fine in the morning but i am not getting any mail in my in box it is all going to trash

This just started happening today. The last message to come through normally was today (August 11) at 10:20 AM EST. Every other message today after that time came through as described in the subject of this post.

I am running Windows 10 Pro version 22H2 fully updated through the July 2025 updates. The Thunderbird version is 141.0 (64-bit). No new Thunderbird add-ons have been installed.

The columns for Subject and Correspondents are there, but they are blank for all my messages after 10:20 AM. The message body is like I said—it looks like I selected View|Message Source. I have both of my email accounts for Optimum and Gmail on Thunderbird. Optimum is POP and Gmail is IMAP. The Gmail message that I received a few minutes ago looks normal. The messages accessed on my Optimum webmail account look fine as well so it looks to me to be a Thunderbird issue.

I have tried the following:

1. Repaired the Inbox folder within Thunderbird.

2. Restarted Thunderbird in Safe Mode.

3. Exited Thunderbird, deleting the global-messages-db.sqlite file in my profile folder and restarting Thunderbird.

4. Exited Thunderbird, deleting the Inbox.msf file in my profile folder and restarting Thunderbird.

5. Reviewed all the Thunderbird settings—they looked OK.

6. Rebooted my computer.

7. Uninstalled Thunderbird via Control Panel|Programs and Features, then downloaded and installed the current version of Thunderbird from the official website.

I have uploaded a screenshot of what my Thunderbird screen currently looks like.

Thanks for any help.

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?

Been using thunderbird for years, stopped getting new messages. Removed/deleted the accounts and tried to setup again and get error unable to login at server, probably wrong configuration, username or password. username and password are entered correctly, changed them just to verify, using default settings and appear to match what their supposed to be as documented. Gmail accounts... Any help appreciated...

I get this error ALL THE TIME from TB. Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) smtp-mail.outlook.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. Copilot says that TB is NOT recognizing my personal Outlook email account as a viable SMTP account. Been on line with Copilot for couple of hours without success. Does anyone at Mozilla have anything to offer me?

Not sure which "topic" best describes my question, so . . . .

OS: Windows 11 Thunderbird 140.1.0esr

I have been using T-bird for several years, and have made to changes to configuration in recent memory. Beginning today, when I try to send an email through my Comcast account, it fails with the following message:

“An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: resomta-h2p-555031.sys.comcast.net resomta-h2p-555031.sys.comcast.net EXMTP server not available.”

The outgoing SMTP server is configured as follows: Outgoing server: smtp.comcast.net Port: 465 Security: SSL/TLS

For comparison, sending email from my Android phone, using the Gmail client with the same server specs, also fails, thought it gives no information.

For more comparison, I configured Outlook to test with it, and it was able to send successfully. I noticed in setting it up that it used the same server name, but with port 587. Armed with that information, I changed the port setting in T-bird to 587. With that change, the send still failed but with a different error:

Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP) smtp.comcast.net was lost in the middle of the transaction. Try again.

Any help is appreciated.

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!

Yesterday I opened Thunderbird to find that it was trying to download 8205 emails. 15 emails actually downloaded, there were no messages in SPAM folder. The notification at the lower right showed 300 more had 'downloaded' before I shut off the internet, went into Safe Mode, ran a virus check to find no threats found. No SPAM was recorded in Thunderbird when I went back online. There were, however, several files with large attachments so I don't know if this is a glitch regarding data vs. actual number emails because when I checked for updates (see attachment)

I discovered that since Version 115.4.2 I HAVE NEVER BEEN NOTIFIED OF UPDATES OR *FAILURE* TO UPDATE. AUTOMATIC UPDATES have been turned off and will remain turned off due to nearly dialup speed lack of bandwidth. I will abandon Thunderbird for having a fatal programming defect before turning on automatic updates.

My actual email provider did not show 8205 additional emails so I am concerned about a possible malware backdoor. Today 15 emails downloaded while the little notice at lower right said it was trying to download 113 ghost emails. I shut off Thunderbird and came here to post the problem. I will update Thunderbird, but need to know if there is a temporary file cache or some other hideyhole that the ghosts (or some attacker) might be storing godnosewhat so that I can either quarantine or delete them?

To Whom it concerns, It has been about 4-5 days since I can't receive my e-mail. I have e-mail you different times with errors coming up. When I open my mail since yesterday an error now says error with acct. cray9@oh.rr.com. Another error occurred with the POP3mail server. The mailbox closes. Then a box comes up Thunder Bird crash reporter then I can put why and then restart my e-mail. It does try to load my e-mail then stops. And now my password box doesn't come up to put my password in. Last it says connection to mail.twc.com was reset then once again the mailbox closes. Please help, I have been a customer with Thunder Bird for years. Thank you!!

Hi. I opened up thunderbird and I've got no messages in my Inbox. My other folders have stored and other messages. I can't see any of my inbox in the trash, junk etc. Don't know where they have disappeared to. I just sent a test message to my email and it appears to be working. I'm just missing my inbox saved messages. Any help appreciated.

I have the latest Thunderbird, it has been working fine for 14 years. Now I get a message about the certificate is not valid for the server. The emails are on my ISPs web site, but do not load on to Thunderbird. I have 4 emails in Thunderbird two With my ISP and two with gmail, the gmail work fine. The last call to my ISP Wowway, the had me change incoming server name and port #, change from STARTT to SSL/TLS and change my outgoing server address. This did NOT help.

 Can I talk to anyone at Thunderbird. This is my 3rd or 4th post here. HELP ME PLEASE!
                              Mike

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.

I set up message filters to run automatically on my inbox as the messages come in. They don't work. I've searched all kinds of solutions, read and tried the solutions posted here, followed the steps...they don't run. What am I missing?

For a week, I have not been able to send any emails through Thunderbird.

This is the only day that I have been able to delve further into the problem.

If I send an email, this is the response that I get after sending. Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) smtp.gmail.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.

I have contacted my main provider and they have been useless. I contacted my secondary provider and they sent me what the settings should be. I checked their info against mine and everything is correct.

I prefer Mozilla products over all others and I wish to get this corrected sooner later, I have two assignments to send over the weekend.

I would rather being doing something else that trying to figure out this problem.

I should be celebrating or mourning the passing of my wife 3 years ago, than trying to figure out what is wrong.

One thing I did do was to go to the Mozilla website and download Thunderbird again in case there was a conflict somewhere in the system.

Thanking you in advance. K

Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) smtp-mail.outlook.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.

Seem to get this (or similar) error frequently. It's like the things I set randomly revert or change. Have sent images of settings. I certainly don't know what to do.

For the last few days my Unified Inbox which is fed by three of my email accounts stopped displaying incoming emails in the Unified Inbox folder. I am running Thunderbird Desktop version 140.2.1esr | Released September 2, 2025 on a Win 11 PC. The incoming emails show up in their Thunderbird accounts OK in their own Thunderbird Inboxes but they no longer also show up in my Unified Inbox. I did not change any setttings that I know of but the Unified Inbox just stopper working properly.

I have gone to the Unified Inbox's Properties and deselected each individual inbox and then selected them and no change. I deleted the cach and no change. The Unifed Inbox is set to "Match all messages."

I am guessing it is a bug in the latest Thunderbird update but perhaps someone can offer a fix I have not tried yet. Thank you!