Thunderbird Community Forum

Please assist,I had to delete Thunderbird off my Desktop Computer & After that I copied all data from Thunderbird to my Desktop,BUT BUT when opening thunderbird,It comes up with as per attachment I have re done this 3 times & it is a stuff up & nothing like what it looked like or what the laptop looks like How can I fix this Problem for which I think I created Thank yoy Darryl

Hallo, ich benutze Thunder in der neuesten Version unter Win11 und verwalte 3 Mailadressen darunter. Nun ist mir aufgefallen das auf einmal 2 Spamordner pro Mailadresse angelegt sind aber nur ein Ordner benutzt wird. Wie kann ich die unbenutzten Spamordner löschen ??? Mailadressen als IMAP angelegt 2 Mailadressen unter Seuresmtp.t-online.de 1 Mailadresse unter Web.de Freemail-smtp.de mit Googleübersetzer

Hello, I'm using the latest version of Thunderbird on Windows 11 and manage three email addresses with it. I've noticed that two spam folders have suddenly been created for each email address, but only one folder is being used. How can I delete the unused spam folders?

Email addresses set up as IMAP

Two email addresses are with Seuresmtp.t-online.de One email address is with Web.de Freemail-smtp.de

Whilst using TB the screen went white with dozens of little tabs along the top of the screeen with what look like page icons, as the app became 'not responding'. Re-loading didn't help - same screen. Re-starting didn't help. I uninstalled and re-installed TB but it is stil the same. Opening in Windows (11) safe mode produced virtually the same result except for a few seconds I was able to open the hamburger menu and select trouble shooting. Opened in trouble shooting mode showed several alerts of 'failed to connect with servers' (outlook.office365.com imap.gmail.com and Yahoo). Then it shut down as before 'not responding'. When open, TB is using some 80% of available memory., and I can only close it by using Task Manager. I'm a complete dunce at this stuff so, if anyone knows a way out of this hole, please use simple English! Thanks, Jeff

Hi, I like to attach hyperlink to the words I write in my mails (for exemple : "you can find here the document, and I attach to the word "here" a link, an URL). But when I respond to such a mail, or when I transfer one of mine, the links are not viewable. Strange thing is that when I respond to such a mail, the person reading my response can see and click on the link, but when I'm writing, I don't see the link. The word (let's say "here") is underlined, but I can't see or access or modify the link (for example to make sure that the link is correct). The information is sent, but I don't see it at the moment when I'm writing my response. Why... ? Thank you in advance

What are the exact differences between Thunderbird and Thunderbird Pro? Pro includes GB of storage. I want to know if this is only the case with Thunderbird, and if all other Thunderbird versions, for example, on the channel Relies Eser, do not include storage. I'm also interested in the topic of encryption, so please provide as much detail as possible.

Where can I find information about this in German?

error message follows

sending message failed.

An error occurred while sending mail. The mail server responded: Authentication required please verify that your email address is correct in your account settings and try again.

The email address is correct. What is going on?

At some point, some of our email folders duplicated. Not sure how that happened. How can I fix this? I've attached a screen shot of a gmail account that illustrates the problem.

Thank you for your help and answer. I hope I can continue writing to you in German as well?

I can't find a contact person and the name of my Mozilla account has been changed; is that normal?

Thunderbird Portable Help

Question: A number appeared after my email address, so "email" and "1954". Who is that? Is that normal?

Question: Thunderbird Developer Toolbox: Can you see in the program? Can you see my emails?

Question: Are there any Thunderbird users left who speak German?

Questions: Thunderbird Portable The archive option isn't updating? How long does the backup take?

Different Thunderbird versions display a programmed year date in the archive option. For example, 2021 in one version and 2024 in another. Is that normal? I can't change anything.

It's as if it's accessing some kind of backup and maybe even sharing it, and I don't know what's correct.

Question: Update Channel Ellipse Update Channel esr. Previously, there were different channels. Isn't another channel better? I've read that it's more stable than switching. Is that true? Information regarding the question below?

140.9.0esr (64-bit) Thunderbird is up to date.

You are currently on the esr update channel. I'm experiencing stability issues with this one.

Thunderbird, Portable Edition portableapps - 1.0 Thunderbird is up to date. You are currently on the release update channel. New Download

General Information In Thunderbird Portable, there is a help page:

https://support.mozilla.org/de/products/thunderbird

Please reply and thank you very much for your help.

I would glad donate to TB Mozilla IF it would work the way it is supposed to. I tried for 3 hours to create a MAILING LIST nut to no avail. The instructions make no sense.

Also in my Address book that I imported, phone numbers show up under the heading "email addresses...and I have email showing up at all.

Stan

On my home computer and my lap top I have Thunderbird installed. Both profiles are identical. The emails on both systems are updated by just downloading them from the provider account. My calender is normaly used on my home computer as well all appointments are saved there.

Going on longer trips away from home I would like to import all my calendar data from my home computer to my lap top. Copying the complete profile takes too much time. By just copying the calendar-data file to my lap top I do not get a working result. What do I miss?

Thanks for help Detlef

I recently updated from a very old version of Thunderbird. The new version no longer shows the little popup messages at the bottom of my screen when automatically checking accounts for mail at the designated interval. As I have numerous email accounts (all set up as POP mail), set to check at different intervals, these popups were useful to me - they also showed when I manually checked an account, or all accounts - this also is not happening anymore. Have they been discontinued, or is it possible I turned them off? I did change some things to suppress nags to update Thunderbird during the time I was using the old version, and unfortunately didn't keep a record of those changes. I'd appreciate knowing which function in about:config controls this feature so I can check to see whether it's set correctly. Thanks!

I have 5 email accounts in Thunderbird. After the update to 148.0, any incoming email gets duplicated into all five email inboxes. Also, Thunderbird re-downloads the various email folders (e.g., spam) repeatedly. How do I make this stop?

I run a rowing club with membership near 200 members. If we can not successfully use mailing lists, I am only left with the option of sending out individual email to each person. I'd like to know why I'm not receiving error messages when nothing is being delivered. I can send out email to one addressee, but not to a group.

I've tried all sorts of suggestions but I can't get the background on "messages" display to revert to the white it has always been till today! I don't recall making any computer changes that might have affected the background display on inbox messages and change it from what it has always been--black print on white background. Now I have a (light) grey background and it's not as easy to see or deal with messages. Please help. -- John Sigwald [edited email from community support forum]

I keep getting emails like the one below. How can I stop Proofpoint from blocking emails like this? I can't get any response from Proofpoint.

Thank you.

Subject: Mail delivery failed: returning message to sender Date: Mon, 23 Mar 2026 15:32:49 -0400 From: Mail Delivery System <Mailer-Daemon@server240.web-hosting.com> To: [edited]@unexpectedwildliferefuge.org

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:

[edited]@marshallsterling.com host mxb-00261401.gslb.pphosted.com [148.163.148.189] SMTP error from remote mail server after initial connection: 554 Blocked - see https://ipcheck.proofpoint.com/?ip=66.29.141.68