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Aloha. I'm helping a friend with setting up a new Windows 11 PC, and cannot get Thunderbird to connect to Spectrum's servers. I spent an hour on the phone with Spectrum support and they just gave up and said it must be an issue with Thunderbird. Here are the details:

- Brand new Dell 24 All-in-One EC24250 - Windows 11 25H2 plus all additional fixes. - All Dell drivers updated. - Thunderbird V155.0 64-bit

If I click on 'Get Messages' after a while I get: "Connection to server mail.twc.com timed out". I've gone into the config editor and changed mailnews.tcptimeout from 100 to 500 and still get the error.

In the Account Settings | Server Settings | Test server connection I get: An error occurred connecting to mail.twc.com:993.

I've tried this with both setting up a brand new account in Thunderbird, and also via copying the 'Thunderbird' folder from %appdata%\roaming from her old machine.

Email configuration (from Spectrum).

IMAP Settings Server name: mail.twc.com Port: 993 user name: abcd@hawaii.rr.com Connection Security: SSL/TLS Authentication method: Normal password

SMTP settings Server Name: mail.twc.com Port 587 Connection Security: STARTTLS Authentication method: Normal password

Can anyone help me troubleshoot this scenario?

Mahalo, Harry Z

This is probably not a T-bird question, per se, but it is so strange it seems that this might be the best place to start, hoping someone might have some insight.

My wife and I each have our own laptops, running Win-11 Pro. Each laptop has T-bird 153.2.0esr (32-bit). We each have an account to yahoo mail (the site now hosting our Comcast email accounts). No problems since ... forever. Until today.

Now, beginning today, on my wife's laptop, when she opens T-bird, she gets a pop-up logon page, pre-loaded with her userid/email address. No input field for a password, but that it not unusual, as a lot of sites put that on a follow-up. But when we click 'next', it just rejects it. We were able to log into the yahoo mail web page (in Firefox) just fine.

After a lot of head scratching, I added her account to the T-bird configuration on my laptop. First time up, it prompted for credentials, but here it accepted them. So now we have her yahoo/comcast account configured and working just fine on my laptop, but continue to get credentials rejected running the same config on hers. Again, this has been working just fine up until today.

(If you are wondering about the connection between Comcast and Yahoo, several years ago we 'cut the cable' with Comcast, after confirming they would continue to support our email accounts. Then some time ago, they off-loaded that to Yahoo, such that we were able to retain our Comcast email address, but it redirected to and is hosted on Yahoo.)

9.6.2026. Spoke with Spectrum, my carrier, to ensure email protocols were correct. They checked from their end and the problem is with Thunderbird protocols. There is no rhyme or reason to incoming emails. Sometimes they have their content but days have gone by where only the subject line/date/time stamp shows. What is going on???

When in troubleshoot mode it seems to work better but I do not see anything to disable. After I log into this account without thunderbird all the missing emails come over.

Does troubleshoot mode affect just the one account or all my accounts. If just the one I can leave it in that mode permanently unless you think that will cause a problem. This is only been happening recently to the best of my knowledge unless I was unaware of the problem .

The account in question is optonline.net

hi, in the last few days i have been having issues receiving emails from btinternet.com but only to my inbox (other folders are updating) i am getting the error message The current operation on 'Inbox' did not succeed. The mail server for account username@btinternet.com responded: EXPUNGE failed. i have removed the account and re-set it up, i have made sure expunge on exit is disabled, repair does nothing on the inbox, nor does compact etc. i have run out of ideas hy this is happening, so i downloaded bluemail, to see if the problem came from thunderbird itself. it is working fine on there and immediately updated all my mails. with no issues. i have tried deleting the folder 'username'@btinternet.com and the msf files. i need help to figure out why this is happening. i checked the IMAP settings and its all correct and the same as in bluemail. also worth noting i can SEND emails no problem too from that account, just not receive them... i have tried to add as many relevent screenshots as i can think of.

Logged into Thunderbird this morning. On current version. Noticed that the local trash folder had emails in it. I have not changed any of the multiple account setting. Send some test emails fro 2 accounts and they ended up in the local folder trash. What has happened. I want this redirection to stop. What other demons have been created by the current update. HOW CAN i fix this problem?

Hello,

Recently, the manual message check feature has stopped working, whether I use the “Get Messages” button or the menu.

When this feature was still working, I could see the progress of the message retrieval from the server in the status bar; now nothing happens (no display in the status bar and no messages are retrieved).

I should note that this isn’t a connection issue, since new messages are successfully retrieved during periodic checks or when Thunderbird starts up.

Has anyone else encountered this problem?

Thanks!

I have just downloaded Thunderbird on my Samsung mobile. Incoming emails are not displaying in Inbox. I have tried turning sync off and push on and it still won't work. The only way is to manually sync

Problem with message are going to the Trash folder, not the Inbox with all local folders in place. After taken in profile the local folders off, the new downloading from message are working just fine to the Inbox . What is the problem Thanks for helping.

TB is sending most of my email to the wrong folder. I had 21 message filters, but then I noticed that a lot of things were going to a folder named "bridge" for no apparent reason. I looked at the filter log, but there was nothing in the log for the last few months.

I did have a filter sending certain messages to the "bridge" folder, but TB is sending things there for no reason. I disabled all 21 message filters, and it is still doing it.

I have version 155.0 and I'm using Windows 11 25H2.

How can this be fixed?

Thunderbird has stopped getting messages and 'get messages' doesn't work & I have to close & restart thunderbird to receive them. Nothing has changed with the email client itself.

I know messages have arrived by checking my providers phone app, but for Thunderbird to download them to my PC I now have to restart Thunderbird to get new messages

I use IMAP to grab my mail, if that's important.

In the last couple of days, my normal method of deleting messages from my Inbox, right-clicking on the message and selecting the trash can icon, has stopped working: the message disappears for a moment, then reappears. I can delete it by dragging it to the Trash folder in the folders pane on the left.

I've followed the instructions given in several postings here, including deleting the Trash and trash.msf files, doing that and then creating an empty txt file called Trash (no .txt), and using Repair Folder.

It just now occurred to me to disconnect from the Internet and try to delete a message. It worked fine?!

After fixing the view problem of my email in Thunderbird (thanks for the F8 tip!), my email stopped downloading. I have no "prompt for password" checked. There isn't a primary password checked. I've confirmed the pop outgoing email is correct with the email provider (google). I can get into it without any issues and see my emails there.

I've re-entered the password for the pop outgoing email to no avail.

I use thunderbird and see emails and content in preview line, but when I open the mail it is empty I don't see anything. All emails are the same. I erase Cache and Clear Data from the App Storage. After that all email are fine but when I receve a nea one is the same: empty. Thunderbird 22.0 on Samsung Galaxy A56G, Android Version 16.

Since Aug. 20 I have been having trouble sending and receiving msgs. (on two email addresses) at Thunderbird when it interfaces with Charter Spectrum. Have sent many msgs. to Thunderbird here and also in close contact with Spectrum. Will this be fixed? thank you.

All of a sudden, all of my incoming messages in Thunderbird are getting sent to "Local Folders/Trash" I have made NO CHANGES to the account nor did I set up any filters. When I try to manually move messages I want from trash to the inbox, it automatically sends them back to the trash folder.

I have a recurring problem with Thunderbird 153.2.0esr (64-bit).

After clicking the Send button, the message is successfully sent to the recipients. I can see that the sending process takes place, and I have confirmed that the message was actually delivered because I was one of the recipients myself and several BCC recipients have replied to it.

However, after sending, the message sometimes does not appear in the Sent folder. Instead, it remains in the Drafts folder.

This is particularly problematic because it gives the impression that the message may not have been sent, although it actually has been delivered. There is therefore a risk of sending the same message again by mistake.

The problem occurs only occasionally. The most recent occurrence involved an email sent to approximately 180 recipients via BCC with an attachment of about 1.8 MB.

My email provider is WEB.DE and the account is configured as an IMAP account.

In Thunderbird under Account Settings → Copies & Folders, the option to save a copy of sent messages in the Sent folder is enabled.

Expected behavior: After successful sending, the message should be removed from Drafts and a copy should be stored in the Sent folder.

Actual behavior: The message is successfully sent, but remains in Drafts and no copy appears in the Sent folder.

.I get this meassage when I try to send an email from my thunderbird account - Sending of the message failed An error occurred while sending mail. The mail server responded: This account has been disabled due to suspicious activity.. Please verify that your email address is correct in your account settings and try again.