Thunderbird コミュニティフォーラム

Dear Thunderbird support team, I am for a few days unable to log into my account, because the program doesn´t recognize the password I set for the imap.wolrdserver.net. It shows the message in attachment. I changed the password for my account and the imap.worldserver.net with my email provider, however it did not work.

Do you have another idea how to fix this? Thank you in advance. Kind regards Elora Helmke

Dobrý deň, dňa 26.9.2025 mi prestala prichádzať pošta. Odosielanie pošty funguje. Nemenil som žiadne nastavenia, na iných zariadeniach (mobilný telefón Samsung) pošta funguje správne. Kúpil som si nový ntb, nastavil som poštu správne, ale rovnaký problém. Mám tam tri účty @jnpfinance.sk, tie nefungujú a jedn účet @gmail.com a ten funguje správne. Ďakujem za radu

Palo Kučík

Hello, I have the following problem: Bitdefender keeps sending me notifications about Thunderbird emails. I have already contacted their support team and they advised me to tell you that Bitdefender correctly detects and removes infected attachments in the temporary folder; However, some emails do not seem to be deleted or synchronized correctly with Gmail, causing repeated notifications. Can you please help me?

New laptop. Took it to the Geek Squad to move the data from my wife's old computer to new. They had me sign in to Windows on the new machine and perform the setup steps, then took it and the old computer to do the data transfer. The issue is that the returned new computer had my MS profile on it but my wife's mail under that profile.

To try to correct this, I set up my wife's profile on the new laptop and my thought was to export the email from my MS account's TB data to a public folder, turn off TB and sign off my MS profile, sign back on to my wife's MS profile, start TB and import the zip file in the public folder. However, it tells me the folder is too large and I must unzip and import from the extracted folder. Windows Explorer won't let me unzip the file saying it's not a valid zip file. Ideas?

Thanks!

I use Ubuntu on a Dell Laptop and there is a number attached to the Thunderbird desktop icon on the side-bar which is not related to the number of unread messages?? What is this number about?

Hi I am using Win 10 and update 140. I updated yesterday.

I have been unable to rebuild my Inbox after doing an Inbox repair. It is having trouble staying connected to my email server, imap.comcast.net. The lower left message continually shifts from Sending Login Info, to Connecting to imap.comcast.net, to Connected, to Opening Inbox folder to looking up imap.comcast.net.

I repaired the inbox because all of a sudden I could not open new messages. I would click on them and it would say loading message but remain blank.

I have also had periodic problems with network and file errors. Just before this happened, I could send a message but not copy it to my Sent folder because of these errors.

If I uninstalled and reinstalled Thunderbird would it go back to the way it was?

Should I do a system restore?

By the way I am connected online and at a high speed. so that is not the problem

Thank you Richard Higgins Concord MA

I've been trying to connect now for 12 hours and have only recovered a fraction

I am using 140.6.0esr (64-bit) and Windows 10. My Inbox disappeared. I was in it with no problems. Then I noticed two problems. I couldn't open new emails. It said connecting to server or loading content but email was blank. Also when I sent an email it could not copy to my sent folder due to network or file access errors. I could open and read all the other emails in my Inbox, just not three new ones. So I selected Inbox properties and repair. After the repair, my inbox is completely empty. It had thousands of messages. When I do a search for common emails I know were in my inbox, it only shows emails from subfolders. When I go to Inbox properties, it says number of messages: 0

Is there any chance I could talk with someone? Or that someone would call me? I'm not experienced in Thunderbird or email settings. And I don't like having to do it online. Richard Higgins Concord Mass

I have been moving and saving starred emails in folders. When I read email on my iPhone, I can see a total number for flagged emails but cannot find messages easily. When I go to Thunderbird on desktop, I have to look through folders. I would find it helpful to be able to view all flagged emails in one place, to periodically see if the flags are still helpful, if I have missed something, etc.

Hi, I am using Thunderbird on my windows 11 machine, I keep getting a calendar authentication request every time I open Thunderbird. I have no calendars enabled. There are 2 email accounts from one.com and one from gmail. Cheers Andrew

Hi,

cannot find an answer. I would like to open TB with my default account which I did via account actions default. TB always opens with a different account. What can I do to make that happen? Thank you in advance

I use this dark mode theme: Star Trek in Thunderbird but override Thunderbird so that Thunderbird is in light mode and the folder, message list and message panes have a white background with black text. The override uses the Autoconfig method (for Firefox but it was working also in Thunderbird Customize Firefox using AutoConfig . This is my thunderbird.cfg file in Thunderbird's install folder containing:

// IMPORTANT: Start your code on the 2nd line lockPref("browser.theme.content-theme", 2); lockPref("browser.theme.toolbar-theme", 2);

and my autoconfig.js file in Thunderbird's defaults/pref folder containing:

pref("general.config.filename", "thunderbird.cfg"); pref("general.config.obscure_value", 0);

In Thunderbird 145 this worked - all panes had a white background. However, when I updated to Thunderbird 146, the background in the folder, message list and message panes changed to grey with black or white text. With Thunderbird 146, both files are still present and the prefs in about:config are present with the 2 value. The Thunderbird 146 changelog mentions Visual and UX fixes and security fixes.

My Windows 10 colour settings are: default Windows mode = Dark default app mode = Light. These are my preferred settings.

I have changed temporarily to Thunderbird 140.6.0esr and got the white background re-enabled. How do I get the white background and black text back again in Thunderbird 146 please?

I can't find a setting that will allow marking messages as read only after I read them. By that I mean only after I click on the message to open it in its own tab. I view the new messages in a split screen.

The current settings allow me to leave them bold as if I hadn't read them even after I've clicked on the message and viewed it in the full TB pane

or

Mark them as read as soon as they're displayed in the bottom half of the split screen.

I don't find either of these options desirable.

The message could not be sent because connecting to outgoing server (SMTP)mail.highpeakwindows.co.uk failed

Hello All,

After 7 years Thunderbird is no longer working with my comcast email address. I know this is probably a comcast issue but after more then a week trying to get any sort of help from them I have given up on Comcast and turned here hoping this is some simple issue that someone has seen.

Comcast webmail access works fine

Via Thunderbird - I can send a message although it will not make a copy of the sent message and long after the message is actually sent I am looking at a message in TB that says 'Connecting to imap.comcast.net, which eventually times out telling me it cannot make a copy of the message.

I receive no messages at all

Nothing has changed on my end of the configuration

Any insight or ideas would be appreciated.

My basic Server Settings Are imap.comcast.net Port 995 SSL/TLS Normal Password

Thank you.