Thunderbird Community Forum

In the last couple of days sending of two emails has failed. On both occasions the error message has reported that the message has been 'rejected for policy reasons'. It concludes 'Please check the message and try again'. What can cause this in a message? What should I check for?

When I receive an email with double line spacing I can't find a way to alter this to single line spacing. I'd like to be able to change from one to the other at will. M

Hello, sorry for the question but I can't solve it alone

My issue : I think my emails have been deleted. Its something like 500mb of content.

I'm on Windows 10; on 128.9.2esr version for Thunderbird.

You see how the path is structured: account@mail.com/inbox/... I moved my mails folders into the folder account@mail.com (instead of account@mail.com/inbox/) Closed thunderbird Restarted thunderbird

All folders at account@mail.com/ disappeared.

I tried to find them. I created a folder named "TestAccountFindThunderbird" I moved account@mail.com/inbox/TestAccountFindThunderbird into account@mail.com/TestAccountFindThunderbird Closed thunderbird Restarted thunderbird "TestAccountFindThunderbird" disappeared as well

and making a research on C:\ drive I managed to find TestAccountFindThunderbird.msf inside the folder at C:\Users\<my_account>\AppData\Local\Temp\MozillaMailnews

At the same place I found also the other things that disappeared from my mail account Health.msf, Apple.msf, Work.msf, Insurances.msf, Bank.msf, ... But they are all .msf files...

I saved them into a backup folder. Then I copy pasted all that content from backup to INBOX.sbd but when I open Thunderbird in a blink they are all removed. I guess its because they are .msf and not actual content.

1) Why when I move a mail folder into account@mail.com/ then the folder disappears/is deleted? 2) Where are my emails? And how do I reimport them? 3) Why do I have traces of them into AppData\Local\Temp\MozillaMailnews?

Thanks in advance

All my messages in iOs are showing in plain text. How can I view them in HTML? I have searched all the settings but can't find a switch for that.

Thanks.

Ed

Last time thunderbird used to list the message by column. Refer to diagram 1 middle section. Now they list it in up down. Refer to diagram 2. Anyone know how to change back to list by column ? I am now using ver 137.0.2 (64 bit).

I have about 30 messages in my Thunderbird inbox, but when I backup my profile it backs up some 700 messages, most of which were deleted long ago. Clearly deleting them doesn't actually delete them at all. How do I solve this please? Any ideas?

Thunderbird 128.9.2 POP3 mailbox Windows 11 Pro

Thanks Mike Phillips

I've just upgraded to Tbird 102.15.1 and I've noticed that PDF attachments now open in a new tab (ie, in the same way that a new email would open in a new tab). Previously, they opened separately in Adobe Acrobat Reader. Is this a new Tbird feature? Can it be turned off (ie, revert to the previous method) and , if so, how?

Appreciate any help to understand this.

Hello

I downloaded mails from my imap server to desktop and deleted them from the server. To see them when I am not at home I wanted to import them in the TB app.

I installed the app, used the QR code from TB desktop to import the data and inserted my password. After importing I only see mails from my imap server but no mails which are only stored in the TB desktop.

Why? Is there a way to import these mails in the app too?

Thanks in advance Tom

我把一个账户从thunderbird中删除了，并且在发信服务器中删除了对应的发件服务器，但每次打开thunderbird时，软件依然要我输入该账户的密码以连接该账户，怎么办？ I removed an account from thunderbird and deleted the corresponding outgoing server from the outgoing servers, but every time I open thunderbird, the software still asks me to enter the account's password in order to connect to the account, what can I do?

Folders are visible in webmail but not updating in Thunderbird. Server settings have been checked and are correct. ALSO .html signatures are not updating or saving to account. When Thunderbird is closed, the attached signature disappears

1st I am 90 yrs old. Been using this app since it was created. Never a problem until these new updates.

Was trying to delete old file (like the old program (block and hit delete). Found some message about deleting Trash folder and things I did not and do not understand. I now have LOST all my data, emails, addresses, everything.

I tried deleting the program and downloading a new copy. Did not work.

App Will not let me create an account. It keeps searching forever and have to cancel. App can't find my google password and just locks up. I only have two gmail addresses. I can access them by going to gmail.com but all my folders are not there. I need HELP please.

I can't even update my address file at the gmail site as I have no access to anything from TB. I am a research genealogist and now have lost all my saved research information.

Patrecia Glau <edited>@gmail.com <phone redacted>

Hello, I'm writing about this original inbox issue: There's a message that can't be deleted... It can't be moved or anything. This only affects one message! And it's been going on for several days. What can I do? Thanks, Oliver D

Bonjour, j'écris pour ce problème original concernant la boîte de réception : Il y a un message impossible à effacer .. Impossible à déplacer ni quoi que ce soit. Cela ne concerne qu'un seul message ! Et ça fait plusieurs jours que ça dure. Que puis-je faire ? merci, Oliver D

I Have Thunderbird 137.0.2 running on Win11

When saving an attachment and navigating to target folder for save, no files in the target folder on the local PC are displayed.

This is not the case when looking for an attachment to send, only when saving attachment. I have another instance of a slightly older release of Thunderbird on a Win10 PC that behaves the same. Anu Ideas?

After a recent update to Thunderbird 128.9.2esr on April 17, 2025, I am unable to login to my gmail accounts through Thunderbird. Login to server pop.googlemail.com with user name *********** failed

I can login to my email accounts fine using gmail but not with Thunderbird. I have tried a number of fixes I found on the internet at the link below but nothing seems to be solving the problem.

https://support.google.com/mail/thread/4528103/getting-authentication-failure-when-using-mozilla-thunderbird?hl=en

Please any suggestions on a solution to this problem?

Thank you! Virg

Thunderbird 128.9.1esr (64-bit) [Linux Mint] retrieves messages from my 4 email accounts (2x gMail & 2x Yahoo-based). It then displays each email retrieved TWICE. In the past, Left-Clicking on Unified Inbox | Properties then the [Update] button would "single-up" the list into a 1-for-1 relationship. I then sort my mail MANUALLY into local folders or delete unwanted in order to keep my inbox "zero'd".

After my recent Linux Mint 22.1 update, this no longer works and I need to close and re-open Thunderbird to get any "ghost" messages that I haven't sorted or deleted to disappear.

I am sure that I have something configured incorrectly but I can't seem to find it. None of the 4 accounts is "aware of" or forwarding to or retrieving from any of the others - they are totally independent. Yet I get duplicated emails from all 4. Using Browser-based mail client, none of them have duplicated stuff anywhere that I can find.

What documentation should I provide? Thanks.

Since I migrated from ESR Channel to Release channel, the main Archive folder doesn't include all the subfolders. Later, I can manually select which folders I want to include in the main folder. For example: I can select only 2025, 2024, and 2023 subfolders to be showed inside the main Archive folders. Now, I can't find this option, and the last messages I can see are from 2023.

I have seen many questions a bit like mine but they all refer to downloading emails. Mine is different: "The folder 'Trash on my@email.com' could not be compacted because writing to folder failed. Verify that you have enough disk space, and that you have write privileges to the file system, then try again." It now happens on two different email addresses (one is POP one is IMAP). Trash seems otherwise to work and can be deleted. But still this alarm. MAS OS 15.1.1 (24B91) - latest Thunderbird 128.5.2esr (64-bit)

I have been receiving emails for my [email removed]@aol.com account on my pc, via Thunderbird, and on my ipad. Now both devices are saying the password is invalid. I have gone to the AOL website and changed the password and can receive emails at mail.aol.com. I have gone back to thunderbird and folllowed instructions to change the pw by deleting in settings and restarting Thunderbird and entering the new pw that AOL Mail recognises. But Thunderbird still says the pw is not valid. Any suggestions ?