Thunderbird Community Forum

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.

I had difficulty getting my thunderbird email to open. Then, when it did open, it uploaded all emails in duplicate. I now have a very full inbox in both my accounts. How can I get thunderbird to remove the duplicates? It would take forever to do this manually.

After I open my Thunderbird email and use it for 15 to 20 minutes it freezes. I need to close it and I get a message Thunderbird is not responding. I then need to close the program using Microsoft to close the program.

Windooze 11. TBird 152.0 installed on June 20th. Now it seems like TBird is not displaying HTML emails properly. They are displayed but not at the beginning. The first line is sometimes just the bottom half of a sentence in the email (if that makes sense). I can't scroll back to the beginning. If I go to outlook and display the same email it displays fine.

Did something change in 152.0 to cause this?

Thanks, Ed Mazurek

I used to have Thunderbird on this laptop and was using Microsoft Office 365. I have since stopped using it from GoDaddy. I uninstalled the old Thunderbird and reinstalled a new version. I am trying to enter the new server settings but I keep getting the old Office 365 settings showing up. How do I get rid of that and find the new settings page to enter the new settings?

All my old email accounts are showing up and I only want to add 2 to the new Thunderbird. I thought uninstalling would delete all the old stuff. Please help.

Hi, When i start the TB-client on a win10 desctop there will be an Authentication error connecting to server imap.gmail.com.

from Google: 400. An error has occurred, The server cannot process the request because its format is incorrect. The request should not be made again. Unfortunately, we don't know more than that!

It still seems like the email arrives to the gmail account. But it turns out that the email doesn't always arrive via sync. Do you see any problems with the TB and gmail connection?

For the moment I don't know the Thunderbird version, I will be back.

TIA, /Leo

When I replaced Outlook with Thunderbird, it was brilliant. It was so good, I chose to donate! Now it's changed. I was trying to find out why a forwarded email changed the body of the message to a HTML attachment. I stupidly followed a wrong AI help process and changed something I can't remember. Now all of my emails only show hyperlinks and not the pictures these hyperlinks point to. I would like the pictures back and the option to download these if these are safe in new emails. I've seached everywhere I thought I went but I can't find the setting that does this. Please help if you can.

I got an eMail notification about an upcoming update for Thunderbird snap/flatpak configs, but I don't see any entry for Thunderbird in my "~/.var/app/" directory. There is an entry for Firefox, but nothing for Thunderbird. Yet Thunderbird still updates regularly and successfully.

What should I do, in order to conform to the eMail notification instructions?

Running the command "snap info thunderbird" returns the following --

name: thunderbird summary: Mozilla Thunderbird email application publisher: Canonical✓ store-url: https://snapcraft.io/thunderbird contact: https://www.thunderbird.net/contact/ license: unset description: |

 **ANNOUNCEMENT:** The snap channels are changing. Action is required by July 21, 2026
 to stay on ESR.
 Read more about this change:
 https://support.mozilla.org/kb/channel-choices-thunderbird-snap-and-flatpak
 
 Thunderbird is a free email application that’s easy to set up and customize - and
 it’s loaded with great features!

commands:

 - thunderbird

snap-id: k1Ml1O9GzSO2QftV0ZlWSbUfQ78nN460 tracking: latest/stable refresh-date: 12 days ago, at 06:38 CST channels:

 latest/stable:     140.12.0esr-1 2026-06-16 (1155) 221MB -
 latest/candidate:  140.12.1esr-1 2026-06-29 (1170) 221MB -
 latest/beta:       ↑                                     
 latest/edge:       ↑                                     
 monthly/stable:    151.0-1       2026-05-20 (1120) 226MB -
 monthly/candidate: 151.0-1       2026-06-05 (1146) 226MB -
 monthly/beta:      153.0b4-2     2026-06-30 (1173) 239MB -
 monthly/edge:      ↑                                     
 esr/stable:        140.12.0esr-1 2026-06-16 (1155) 221MB -
 esr/candidate:     140.12.1esr-1 2026-06-29 (1170) 221MB -
 esr/beta:          ↑                                     
 esr/edge:          ↑                                     

installed: 140.12.0esr-1 (1155) 221MB -

I don't use Archives or Templates. There is no folder on my servers that correspond to these and they are not subscribed in my IMAP settings.

They don't appear in the per-account view. But they somehow appear in the unified folder view.

I am not able to figure out how to make them disappear.

Help.

My school email's storage and emails will expire end of today (June 30th, 11:59 PM EST). I accidentally thought the account would just be frozen at that time, but realized they would be deleting the account all together for universities alumni.

When I downloaded Thunderbird to transfer my emails, I'm logging in, but I'm getting prompted to log in to Microsoft rather than Gmail for some reason. The email should be Google Workspace. I'd love to know what's going on as I'm not sure and my school's IT support said it's a problem with Thunderbird as it should be gmail for me.

Anyone know of any fixes or suggestions?

GmailをIMAPで使用。 19000件ほどの「すべてのメール」を、17000件ほど「ローカルにアーカイブ」したところ、他のPCで見られなくなった。 IMAPでは削除扱いだろうが、Gmailでは自動削除オフ&アーカイブするという処理がされているはず。 実際Gmail上ではすべてのメールに残っているし、iPadの Gmailアプリでもすべて見ることができる。

復旧する方法はないか。ローカルにアーカイブしたメールは残っているものもあるが、残っていないものも一部ある。

以下、AIの回答

② 今回の問題の本体

あなたの現象の本質はこれです：

❗ Gmail IMAPの「分割レスポンス」＋クライアントの「完了判定」

⸻

Gmail側

• All Mailを一括で返さない
• チャンク（分割）で返す
• 順序は保証されない

⸻

For five or so days, when I go to send an email on my iMac, I get a message saying SMTP server won't send it. If I go to webmail, it sends, and if I use my iPhone it sends. Rogers/shaw has walked me through testing and nothing is wrong their end. Is anyone else having this problem?

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 have loaded thunderbird and the email preview pane is not displaying. It was OK this morning but has disappeared now. Is this a temp[orary issue or has there been an update of the program.

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?