Thunderbird Community Forum

I have an hotmail.com account with no problems whatsoever while logging into Apple Mail, G-Mail etc. but when it comes to Thunderbird it does not let me login. I tried to login first to outlook itself, changing the servers ports etc. but nothing works.

For refrence my current server settings are: Incoming (IMAP): Server: outlook.office365.com Port: 993 Security SSL/TSL and OAuth2

Outgoing (SMTP): Server: smtp.office365.com Port: 587 Security: STARTTLS with OAuth2

Hi, I had/have an IMAP account at my ISP Host, with TB connecting to.

There has been a number of occasions where I have used the Servers IMAP copy of emails as a back up, and from memory am sure that when connecting a fresh client, all emails/folders etc updated and down loaded from the server > client, in fact nothing got deleted on either side, and both sides synced.

My host (Fasthosts - I will name and shame) deleted my whole IMAP account by mistake.

They hastily re-instated just the package but all the emails had been wiped from the server.

I did though have a full copy of all emails on my TB IMAP client.

When I reconnected my client to the server after the re-instatement, i expected my clients emails to upload to the server, but instead they 'vanished' - and I have nothing but empty folders.

Am I able to recover any of these emails from my client, ie are they sitting in a file/folder still ??

TB has restarted a number of times since, and I fear the folder may have been compacted, but I cannot be sure.

Thoughts appreciated.

I'm trying to move from Windows to Linux without downloading all my imap messages again. What I've tried: 1. Install tbird on Linux, create new profile. 2. Close tbird. 3. Using Linux file manager,

 - delete contents of new profile folder
 - copy contents of old profile folder into new folder
 - delete Compatibility.ini in the copy

4. Open tbird with -p (profile manager)

I've tried twice with different results. The first time at step 4 I started offline. Thunderbird opened will all my previous tabs open, except that all the internet tabs reported connection failure - as expected. Under account settings, both local folders and my gmail account reported the correct (new, linux) path. When I went online and completed the gmail OAuth dialog thunderbird reported an inbox summary folder error, and deleted all the imap mbox files. I closed and restarted tbird- which failed with a crash dump. the terminal window reported successful minidump creation- the file manager showed the minidump file at zero size.

I repeated the process (recreating the original unmodified profile). This time at step 4 I started online, and tbird never opened- it generated the crash dump immediately.

Two questions: 1. Is it possible to transfer an imap profile and avoid re-downloading all the old messages? 2. What am I doing wrong that I'm getting the crash dumps?

Windows: [Compatibility] LastVersion=147.0_20260108190847/20260108190847 LastOSABI=WINNT_x86_64-msvc LastPlatformDir=C:\Program Files\Mozilla Thunderbird LastAppDir=C:\Program Files\Mozilla Thunderbird

Linux: [Compatibility] LastVersion=140.12.1_20260628021646/20260628021646 LastOSABI=Linux_x86_64-gcc3 LastPlatformDir=/initrd/mnt/dev_save/Thunderbird-portable64/thunderbird64 LastAppDir=/initrd/mnt/dev_save/Thunderbird-portable64/thunderbird64

I have been using Thunderbird calendar synced to gmail a/c on Linux Mint for many years and have been able to send reminder notifications by email. Recently I had to unsubscribe my calendar and reinstall to clear a fault and the notification by email function has disappeared from Thunderbird event notifications. Can you tell me how to restore that function?

Version 140.11.1esr

You sent me a message: Did you sign in to Mozilla? Help us keep your account safe by approving your sign-in on: plus an "authorisation code", but I do not know how to use this.

Locked out of my emails since Feb 26 2026: [redacted] @hotmail.com [redacted] @hotmail.com [redacted] @hotmail.com

/edited email from public community support forum.

Hello, I use Thunderbird to manage several email accounts, one on them is not active anymore but I still want to be able to access the emails stored in my thunderbird directory tree, so I keep it active. And the fact is that every day this account tries to access a remote server that does not exists anymore to retrieve email that can not be retrieve, and every day I am asked for a password that cannot work. But the fact is that I did deactivate all options to read remote emails for this account, so that behavior is odd and I am not able to find a way around it. Any idea what to do not to be bother anymore ?

Thanks in advance for your help :-)

After upgrading from Mint 21.3 to 22.3, Thunderbird no longer offers me the option of setting email alerts for events. Details: - I have Provider for Google Calendar installed - I've tried adding my calendar as "Google calendar" and "On the network" but neither offers email alerts. (On the network works better for responding to invitations.) My current work-around is to go to the google calendar app on my phone and set an email alert after creating the event in Thunderbird. That works but is a pain. This worked before. I suspect it's more a configuration issue and less a Mint version issue.

End user here, with Thunderbird for years, now on several machines that I use. Keep getting the warning window about "ESR" change. I have no wish to re-install Thunderbird, on each machine, nor to go beyond the normal updates. Can't tell which "channel" I need to choose. Unwilling to just guess. Could re-install on all five machines, if that's truly necessary. Hope not. An explanation of the simplest way to dispose of this issue, is the help I'm looking for. I think I'm currently set to the lower case address. And arranged such that each machine updates to the current content.

IIRC, there was a discussion some time ago that a repository for .deb packages would be made, similar with we already have for Firefox. There was any development in this question?

My Message Source displays text in very large Liberation Mono. I can't find a setting anywhere, including Advanced Preferences. Where can I change that?

Liberation Mono is the font I have set for monospace in different languages. Since it is not the default, there may be a connection there.

Also, since yesterday when I reply to certain HTML messages, the font used for quoted text is again large size Liberation Mono. I haven't changed anything, so I suspect it's a bug in new 152.0.1.

At the beginning I see some message disappear (moved from inbox to the folder but never show in the folder) then following some advises I made a Repair Folder, then all messages in the folder disappear.

As you can see, on the gmail picture there is 114 emails in this folder, in the Thunderbird picture it count only 7 and display none.

Please any one have a solution ?

I'm working with Thunderbird 152.0 on linux (Manjaro GNOME). I've been having this issue where sometimes while composing a reply, the quoted text of the email I'm replying to in the body of my current reply will be displayed as black on the dark background. It's very annoying when I need to look at specific text to refer to in my message.

Some more observations: - This is not a new issue, it's been happening for quite a while now, possibly years, but it's finally gotten to a point where I want to fix it. - It does not always happen. I suspect it's when the original message I'm replying to has been formatted in html first, whereas I prefer plain text replies.

I've attached an image of what it can look like on my end, as well as one where I select the text to show the contents.

Is there anything that can be done about it?

Thunderbird 140.7.1 i have a subfolder called "purchases" which I add to on a regular basis. Suddenly no messages appear after May 2014 I have logged in directly to the mail server, and all the missing messages are definitely on the server. I have checked the local filters, none are set. I have tried properties/repair. I have tried removing ~/.thunderbird/xxx/ImapMail/mail.myserver.com.au/INBOX.sbd/purchases.msf

Could it be a problem with dovecot indexing on the server? all the other subfolders seem to work fine. It's just this one.

I created a user profile for IMAP and all was OK....Until I deleted the profile for POP and I lost all e-mail folders that I didn't move to IMAP. My PC is running Linux Mint. How do I get my lost e-mails?

Let me explain there is some one with the following email:

noreply@redcarpetradar.robly.com

Whatever anyone does do NOT click on their links I believe it's a criminal organization trying to get to my account.

I know many of you may not be in my situation but I'm a bit job hungry cause financial hit really hard. I clicked on link without looking and the site pretended I needed to fill a job application out. So I did without looking to see who sent it. Yes, STUPID me.

For some reason I marked as junk and it's not going to where I need to and that is trash and immediately delete it. I try and see if I can setup a rule for that. But wondering if there a extension that might do a better job. I tried to unsubscribe but these guys keep hitting back. That one sign of hackers trying to penetrate.

So now I'm wondering is there anything else I might be over looking. One think I keep thinking about is why NOT put something a tool that will do similar to mxtoolbox. With AI out there it's going to get harder to keep these criminals out of our inboxes.

I appreciate any feedback.