Thunderbird Community Forum

I'm trying to remove a couple accounts that I no longer use in Thunderbird. A window keeps popping up asking for a password, but the mail service is no longer available. When I click on the red delete button for that account, nothing happens. I've deleted all the mail in one of them which I was able to do as I thought I might need to do that first, but I still can't delete it after that. The other one won't even let me delete the emails. How do I delete these so I stop getting asked to put in a password for accounts that are no longer valid and I don't want anymore?

I'm getting "Thunderbird can't connect to the server" message, so I can't download messages. However, a message or two will finally download 1-2 hours later.

Same problem on 2 laptops, both running Windows 11. But I know my emails are coming in as I can view them via Spectrum webmail. So the problem isn't the Spectrum servers.

I've logged out and back into Thunderbird, and have re-booted my laptops. No luck. What to do?

Also, is there a place to report problems directly to Thunderbird?

Thanks for any help.

Since yesterday (27 Apr 2026) any and all mail that comes into Thunderbird gets marked as SPAM. I searched online and found people saying that I could reset the junk training filter, so I did this, but incoming mail was still marked as spam. The next suggestion was to delete the training.dat file. Did that, restarted Thunderbird and incoming messages are still marked as spam. The last suggestion was to turn off adaptive junk mail controls. Didn't want to do that because I assumed that it would let spam through. Nope. Turned it off, restarted Thunderbird and two emails from my work came in and got flagged.

I'm running version 140.10.0esr (64-bit) on Windows 11. I am using IMAP to connect to the mail server but it's not running any spam detection software (like Spamassassin). I know this because it's my server and even if it was, no updates have been preformed since the first of this month and this just started happening yesterday. Combine this with the bug that Thunderbird notifies me of incoming mail, even if it's spam (didn't post about this because there are plenty going back a couple of years), is starting to make me look for an alternative.

None of your "topics" addresses my issue at all. Where is your user manual? I'm trying to figure out how your "retention" works. Also how to get a message filter to run on a specific folder daily.

Thanks, Saroj Gilbert

There is a post from Mozilla which said your comments were written by a bot. The problem is that there is no access to the comments through my iPhone even though I logged in with Robert’s email and password. I apologize profusely. But there is no way that I can respond instead of creating a new subject.i’m normally reasonably capable of running a computer.I have a 4 y/o M1 mini running some version of 16.

Hi, I use my Thunderbird installation as a feed reader for RSS. Unfortunately, there are two feeds which aren't updated any more. I can't find an error. The feed is OK, I checked the XML file - the new entries are in the feed. The same feed works with a different feed reader. I already deleted the feed and added it again to Thunderbird. That didn't help. I don't know how to find the error. One of the not working RSS feeds is this one: https://mastodon.social/@islieb.rss

When I execute "right click -> Get Messages" on the feed, nothing happens. No error message... What can I do to find the error?

I'm running Fedora Linux 43, Workstation Edition; Thunderbird 140.10.2esr from Flathub. Everything's up to date.

Thanks, Simon

This happens erratically, not every time. Annoying when trying to select a message to delete and the one before or after or both also deletes at same time. Now I have to go and retrieve it back to inbox. Checked in settings and cant find a solution. Also looked in pad and mouse settings to no avail. Seems to have started in last 2 or 3 months, can't be specific of time line.

Whenever i send a message , it is saved to the 'inbox' previously it would be saved "sent mail". I have verified that TB is configured to save to sent mail but the msg is saved anyway to inbox.

Can some one explain how to get back to saving sent messages to sent mail folder.

In all honesty I find it frustrating to keep moving msgs manually.

I'm trying to transition from Eudora to T'bird. I've got both installed on my Win11 laptop. I've used Eudora 25+ years, i have about 4 or 500 filters set up. I can't get even one filter to work on T'bird, so my Inbox now contains a near-useless jumble of over 2000 messages. Gotta get past this to keep using T'bird. E.G. I subscribe to an email forum called Baen's Bar. It accounts for 80% of my inbound traffic. So I set up this single filter:

Apply when: Manually and New email Match all of: From Contains baen Subject contains baen To contains baen

Actions: Move message to: Baen Bar on green@xplornet.com' (i created this folder and see it below "Inbox") (AFAIK these criteria should capture every relevant email) (Question #1: is matching content a case-sensitive test?)

(Aside: when typing this query, i tried to make the actual dialog italic for clarity. I highlighted some text and hit the "i" above the dialog box, all it did was enclose the highlighted text with quotes - really? so Question #2 - italics not working?)

Anyway what happens is, no apparent filtering when getting new mail, and in the "Message Filters" dialog box, when i select the one and only filter, and make sure "Enabled" is checked, and click on "Run Now", also nothing happens. Ok, i say "nothing", but when i look in the "Baen Bar" folder, there are three (3) messages containing the word "baen". Three out of the 2,000 such messages cluttering my inbox. I could understand "none", i could understand "2,000", but "3"? WTF??? I tried it multiple times, not sure which attempt even got those 3. Solutions gratefully accepted.

Question #3 I noticed a reference to "Importing filters from Eudora". I DO NOT want the **content** of Eudora's hundreds of mailboxes to be imported - it's probably over 8 Gb. I'm fine leaving that content archived with Eudora. Is there a way to import the filter list and folder list from Eudora without importing the contents?

Question #4 Where is T'bird storing my email? Most of my cyber-world is on an external HDD. I love about Eudora that it's fully portable. I can literally unplug my external HDD from my Win11 laptop and plug it into your laptop, rename the drive to J: and just run Eudora. Can i do that with T'bird?

I get your begging for money, you are obviously young, I have donated more money to you already than all my other email providers combined, period, you will allow me to move , remove as much as I want or I can delete you and you lose any future donations, but ticking me off with this we think this is junk crap trying to get more money from me only makes me want to DELETE YOU YOUNG PEOPLE, you act just like your buddy Google, lmk Anthony, or stop the bs

Using a new, clean install of Xubuntu 26.04, with thunderbird 140.10.2esr 64 bit, ubuntu snap build 1.0. In settings: play a sound when new message arrives, no sound is heard. When clicking "play" to test the sound, there is no sound. Also, if "use the following sound file" is checked, there is no sound when "play" is clicked. (I have tried various .wav and .mp3 files.) I have installed pipewire-alsa, but that didn't help. Any ideas?

Please inform me how I can mark senders in Thunderbird as not spam or is there a list of secure senders so their mails will not go to spam folder?

Best regards Magnus Arnason

On my home computer, all my sent emails go automatically to the Inbox, not into the Sent folder. Now using Thunderbird on a laptop and I can't remember how I set that up. Grateful for help.

Hello, I have an IMAP acocunt configured, the server is Zimbra and has several shared Inboxes inside my account. Each of these inboxes come with several subfolders (which have the same name in every Inbox), and I would only like to keep some of them displayed in Thunderbird, but the unsubscribe option does not work for a few of them.

I open up the "Subscribe" dialog, I can correctly navigate to the fiolders I want to unsubscribe and click them, which unchecks the mark. I click "Ok" and nothing happens. If I reopen the Subscribe dialog, the folders are checked, as if I did nothing.

Note that I can unsubscribe to most folder, only a couple of them have this problematic behavior.

I have tried enabling/disabling the "Show all folder" option in the Advanced account panel and Enabling/Disabling the local storage for these folders.

I have also tried to unsubscribe the folders, then manually erasing the mbox files and indexes in the account folder before clicking Ok. The msf file are immediately recreated.

In the screenshot, the folders marked with an arrow cannot be unsubscribed, no matter what I tried.

Tags summary display has disappeared.

I can search for tags, but the convenient "tags folder" is gone. Please help.

Tried in safe mode with add-ons and toolbars/controls disabled. Error console is empty when assigning or removing tags.

I am currently using Thunderbird version 140.10.2 esr. (32bit) I understand that to latest version is 150. I also understand that, from version 145, Microsoft Exchange accounts are supported natively by Thunderbird.

I am using a generic desktop PC running Windows 10 Pro (22H2)

I am having difficulties with an Exchange account using the OWL add on.

I would like to upgrade my Thunderbird to the latest version and use the native support for Exchange accounts. I would also, if possible, like to upgrade to a 64bit version.

When I follow the instructions (Help/Update Thunderbird) the pop up reports that 'Thunderbird is up to date'.

I can't see a way forward at present, can someone assist please.

I’ve set up a new email service type, IMAP, to take the place of my old POP email. The POP email doesn’t have a synchronization and storage feature, so I’m wondering: First, how can I combine the old POP emails with the new IMAP address; and second, how do I transfer drafts and sent emails from the old to the new one?

It has been going on for two days. I tried restarting in troubleshoot mode and it didn't turn on the "Show Password" button. The version of thunderbird I'm using is Mozilla Thunderbird.