Thunderbird Community Forum

is there any way to perform a dynamic backup of Thunderbird. By that I mean a regular (e.g. daily) backup of the profile or at least the mailboxes using a scheduler without closing Thunderbird down?

Have been using Juno Email Accounts for past 10 years with Thunderbird Email Client Program for downloading Emails off the cloud. It is now more difficult to make contact with Juno for Tech Support. To do Email one has to have an Email Address and Password ... THEN they need the Incoming Email Server with the Type of server ( POP, SMTP, IMAP ) . Long Story Short it is now Impossible to Install Mozilla Thunderbird onto Win10 Machines.

My Email Address is [edited] @Juno.com ... My Text Mail Address is [edited]

/edited email and phone# from public community support forum

duplicate of /questions/1591698 thread

I have Juno Email Accounts ; What are the Settings ? ... Incoming, Ports, Outgoing, Ports

Mozilla Thunderbird Will Not Install on Win10 Machines ... The Auto Settings Algorithm has issues.

Email Address : [edited] @Juno.com - TextMail : [edited]

/edited email and phone# from public community support forum

SIMPLIFY THUNDERBIRD IT IS EXCESSIVLY COMPLEX. I CANNOT EVEN SEE HOW TO MOVE MESSAGES FROM THE INBOX TO THE RELEVANT FOLDER IN MY LIST. I PERSONALLY BELIEVE FIREFOX AND THUNDERBIRD ARE OVERCOMPLEX AND NEED SIMPLIFIED. SIMPLES. WHY CANT I COPY AND PASTE THE VERSION NUMBER. BLOODY ARESHOLES . AS I SAID IT IS BLOODY OVERCOMPLEX. AT THIS POINT I AM CONSIDERING GIVING UP ON WHAT IS CLEARLY AN OVERCOMPLEX PIECE OF SOFTWARE THAT REALLY DOESN'T LOOK GOOD EITHER AND THERE IS NO OFFICIAL SUPPORT SO WILL HAVE TO LOOK FOR AN ALTERNATIVE. COMPLETE WASTE OF SPACE TOO MANY COOKS SPOIL THE BROTH COMES TO MIND THIS IS WHAT WE HAVE HERE

I have been using the same Email Address and Thunderbird for Downloading my Emails for over 10 years. Now Thunderbird will Not Install. Am getting a strange Error Message ... Authentication Error : Unable To Log in at Server. This has happened on 3 machines. Why is it now impossible to Install Thunderbird on Windows 10 machines.

My LongTime Email Address is [edited from public] @Juno.com

I recently bought a new HP laptop running Windows 11, and installed Thunderbird I am still using an older HP laptop running Windows 10, running Thunderbird for years without issues

I installed Thunderbird on the new Windows 11 laptop (without using the USB drive for the profile) and managed to carry over the address book using my account from the old laptop. It is working, but acts odd when deleting emails.

When I delete an email (by highlighting it and hit Delete) in the Inbox, it disappears from the Inbox, but it still shows up in the All Mail folder. When I try to delete it from the All Mail folder (by highlighting it and hit Delete), it disappears for a split second and then comes back. The only way to permanently delete ANY email is to move it to the Local Folders - Trash.

It's like playing whack a mole!

I'm wondering if there is some setting issue, or if I should just uninstall Thunderbird, reinstall it again using the USB for the profile from the old laptop and start all over.

I would appreciate any help!

A few months ago I posted a question on these message boards after losing my ability to receive, send or even review messages/e-mails. For 3 months I was unable to access my e-mail. And I'm not certain hoe they are related, but after a hard drive failure, The only files that could be seen on the hard drive was a file folder labelled Wondershare. I downloaded a Wondershare program (Recoverit) after all my archived messages were wiped from my computer as this was the recommendation from members on the open threads at Mozilla.

While I appreciated the help from the members of this community, Thunderbird has again destroyed my ability to access any e-mails. The Thunderbird program is telling me that the settings that it took me 3 months to finally sort out are no longer operative.

Total garbage, I am not an experienced computer user, and would never have signed up for Thunderbird had I known this platform had no customer support and prone to these sort of failures.

Can anyone help me open my e-mails and move them to a program where I don't have to put up with such nonsense?

Thanks a lot in advance

In Plain English how to use and secure encryption on all outgoing emails please and whether or not to use this great advantage. Many thanks to all those who contribute to this work, PB

Other than being slow to download my emails now for a few months, TB was performing well until a week or so ago. Now it also won't open the downloaded email when I click on it and the TB freezes up so I can't close it out. I have tried restarting computer multiple times and it works for one or two emails that I can open and then starts freezing up again. Makes using it almost impossible. I have security Windows 11 Defender only and have had it the entire time when it also worked well.

The export says to hold over pix. Computer says files are exported and continue on phone but phone is still stuck on importing. I don't know where the ap window is but I downloaded the latest version

With 03.04.2026 they began to notice that the attached emails in eml format (the attached emails have attached documents, mostly pdf) sent from yandex mail stopped opening. Everything used to open well. Eml also does not save to disk. If you send the same files via Gmail, everything opens. Program version 150.0.1

I'm on a new Windows 11 desktop with two monitors. Everything's been working just fine up until around 26th April (two weeks ago) when the native Thunderbird new mail notifications started appearing in my second monitor, rather than my main display. I had made no changes at all myself.

I've been through all the fixes suggested via Google (toggling the displays; checking Windows notification settings), but none of those fixes have made any difference. I switched to using Windows system notifications for a while, but I really don't like them.

Might this be something in a Thunderbird update itself? It just doesn't seem to be detecting the primary monitor at all. All my other app notifications continue to show on the primary display.

Has anyone else encountered this or have any other solutions I could try?

Thanks, Averill

I've successfully connected to a hosted Exchange server through EWS and NTLM authentication (kudos BTW). But there is a problem - often during operations against EWS I'm presented with "Login to account XXX failed" "Login to server YYY with account XXX failed". I can ignore it (cancel) and it will work for seconds or minutes but eventually reappear. Sometimes it's very frequent, sometimes is here and there. TL;DR; connection works, I can read directories and e-mails.

From looking at development tools I see these scenarios: 1. POST requests return 200 always (no messsage of course) 2. Eventually a POST would return 401. Then Thunderbird issues a GET, it returns 401 as well but response includes header WWW-Authenticate: NTLM XXXXXX. Then another GET is issued containing header "Authorization" with the value from previous response. This time it gets 200 and continues without POST requests without a dialog. 3. Sometimes there are more POST requests with 401 (I assume in parallel) before a GET is issued and then I see a dialog. Sometimes it recovers (regardless of whether I cancel or retry), sometimes gets stuck with 401 with dialog reappearing each time it tries something. This case it's similar in sense that thunderbird issues GET with 401 and WWW-Authenticate header, issues another GET with Authenticate header but still gets 401.

If I had to guess I'd say the problem happens when POST requests are issued in parallel, not sequentially. OTOH it might be a problem at the server, but it isn't very likely.

All folders are shown ticked but they do not appear. I can view one folder at a time with Go>Folder>my account>Inbox(say).

Using IMAP. Firefox 151.0.4 I don't know what I could have done to cause this.