Thunderbird Community Forum

Hey guys,

So I am trying to create a rule that will delete emails on the server that are 360 days or older.

I know you can go into settings...

>> leave messages on server >>>>>>For at most ,,,,,,,

But from what I have read that only deletes emails on server from when they were downloaded into thunderbird.

I am new to thunderbird so that wont work for me.

So I went into message filter....thinking this would work

>>>>>age in days > is greater than > 360 days >>>>>>>>>>>Delete From Pop Server

But nothing happens???? Help!

Your input is appreciated

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

now i am getting mail but my dad and my brother both said they are sending mail and it says undeliverable I tried sending to my self and it came through I have Thunderbird through Comcast. i see mail in Comcast that is coming through so i do not know why. the only thing i could think of was they tried yesterday when the update was going through i received a mail at 7.15 this evening so i have no idea why it would bounce back did nothing to change anything

I have three email accounts. One is with a btinternet.com domain, and Thunderbird 153.2.0 has started not fetching emails from it while getting all the others. I've removed and reinstalled the account and things work fine for a few days but then it stops again.

All the security settings, etc., seem correct, and I'm not getting any error messages, just nothing happens.

Any thoughts from out there?

Thunderbird has been working well, but all of a sudden it stopped sending my emails from aol accounts. I have tried many internet solutions and nothing is working.

thunderbird Version 153.2.0esr (64 bits) Hello, following an update, email retrieval is no longer working for an account with a ....@rocketmail.com address. Thunderbird opens a "Yahoo" login window, but when I enter my address, it is flagged as invalid. Fortunately, I am still able to log in to this account via a web browser. (Google translation from French to English)

I can no longer get email from my Yahoo email account. I've gone through all the troubleshooting hints and recommendations, as I understand them, but without any luck.

I only have the one account.

The Activity Manager (see attached) shows "No messages to download", but the message at the bottom left said there were messages, but TB doesn't download them.

Inbound emails are going to Trash instead of Inbox.

No changes have been made. How can I check settings to find a solution? I see nothing related to this issue. Thanks for any help.

Thunderbird is downloading new messages but failing to display them.

Other functionality remains active, ie I can see and open messages, delete all the contents of folders, compose and send messages, but when the software downloads new messages they simply do not display and cannot be accessed.

Not sure if it's relevant, but the message INBOX count appears to be stuck at the number 59, although more messages than that have been downloaded.

Bizarrely this is the message displayed whenever I now open the Thunderbird application (it was there when the problem first appeared and returns everytime). Out of desperation I even made a donation in the hope it would release the messages!

Thank you in advance, Steve Davidson

When I open Thunderbird it is sending my emails directly to the deleted folder. I have tried all-sorts and cannot find an answer. I transferred Thunderbird to my new PC and all was working okay for a few weeks then all of a sudden there were emails missing from my inboxes and I found them in the deleted folder. I am 76 years old and need an easy step by step solution please ..... John

Is this a known fluke. In group with more than one email I see the excerpts and can easily deal with them (delete) but if there is only one in a group I can do nothing?

I don't know if this is the correct topic to select but there is nothing more relevant.I am using windows 11 and When I try to delete e mails (G mail) I click on the e mail and then delete. The e mail then disappears and I then quit out of e mails. However the next time i go into my e mails it is back again. The only way i can get them to delete is to again tick the e mail i want to delete and then click delete. If I then go into something else e.g. drafts or spam and then quit out of the e mails when i go back in the e mail i wanted to delete has gone. I have tried resetting firefox but makes no difference

I have several Yahoo accounts set up in Thunderbird, but I get this frequent (several times a day) error notification from just one:

"The current operation on 'Inbox' did not succeed. The mail server for account Yahoo (xxxxxxx) responded: p."

I'm sure this is a truncation of the complete error message. How can I see the complete message?

There seems to be no consequence of the "error" - everything appears to work as normal. It's just annoying.

My email was working then suddenly stopped. I have been connected to AT&T (Currently and Yahoo). I finally got it touch with AT&T mail. They claim that they no longer support or connect with Thunderbird.

Does anyone know if this is this correct?

Thank you for any help!

Or does anyone have any suggestions on what may have happened. This started one or two days ago from 09/09/2026

Hi Support,

For the past few days I have been using Thunderbird as my mail app for office 365 account and it has been working however today I have attempted to send an email and it has stopped being able to. I get prompted to re-enter the password go through the login and the 2FA and then get to the "You're all set" response page and when I go back to the thunderbird app I get prompted to re-auth again.

Are there any troubleshooting steps I can follow to find out at what stage it is failing?

I have it configured for smtp-mail.outlook.com with port 587, StartTLS and OAuth2 selected. A username is also configured.

I have set up 4 email accounts in Thunderbird. I tried today to set up another email account with the same domain. selected the New Account Button (email only); then pop up screen to add name of account user and users email address. next menu, TB was successful finding the server but a small yellow flag says "unknown hostname" but lists the 3rd party host, that there is SSL/TSL security and the user name matches the new account information just entered. Incoming settings looked correct. The next screen is Choose email account type and it was auto populated by TB and all info is correct. Next, enter password (for new account?) and TB fails to create a new account. Says Authentication error unable to log in at server. Tried doing the manual config. Outgoing server protocol shows SMPT when it should be IMAP (correct?) but the field is un-selectable. So results are same, Unable to log in to server.

the manual config screen has a host name field and it is autofilled with my company's name.domain but it is misspelled! Tried to edit but no success. I really need to get this new account up quick! So asking for any help available.

Reinstall of Thunderbird after a few years easy with all my old (sub) folders captured from service provider. However, neither delete folder (via any option) nor create folder is acted upon. Also ignored is attempt to rename a folder. Inbox contains over 23 000 messages but none after 5 December 2025. Deleting hundreds permanently on provider has no effect on Thunderbird. Some folders are empty but but are labelled as containing hundreds of messages.

Trying to send a message results in error, 'Could not detect login form.' But I am logged in.

Any pointers to unclogging system gratefully received. Chris Oldman

I have my gmail emails rerouted to my outlook email address and in past week my emails are not showing up in Thunderbird for a number of days after they are visable in my outlook program. Why? I have compared my Thunderbird settings with my partner and they are the same. Only difference is that my partner picks up her gmail email directly, does not use outlook and does not reroute her emails. She does not have any problems with emails arriving late to her Thunderbird inbox. We are both using same version. Any suggestions?