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Is there a way to expand the email message pane? In my current setup, the message pane shares the full Thunderbird window with several other panes - folder pane, message thread pane, etc. For most emails this is adequate, however some emails are lengthy newsletters or articles, sometimes also including images. Is there a why to view such emails perhaps in a separate tab where the email essentially fills most of the window below the menu bar?

Hello,

I don't know what happened, but all of sudden, the layout changed, see attachment.

None of the items in the View menu seem to work.

How can I go back to how it was before?

Thank you. -- Edit: FWIW, I hid the Unified Toolbar by adding the userChrome.css file. https://support.mozilla.org/hu/questions/1418113#answer-1590935

-- Edit: Found it. https://support.mozilla.org/gl/questions/1508029

Settings -> Appearance:

• Grouped by Sort
• Default Sort by: Date

When I press Apply these settings to: All existing folders I get Sort by: Unthreaded in all folders.

Windows 10; Thunderbird 138.0.1

Hello,

I am getting the following error when adding a new Titan email account:

Unable to login at server. Probably wrong configuration, username, or password.

Username and password are obviously valid.

I configured a similar Titan account previously and it's working fine. However, this new account of the same domain is being rejected. Domain is hosted on Hostgator and both email accounts are running in Titan email. Settings test is passing as I am getting the following message after pressing the Re-test button:

The following settings were found by probing the given server.

Thunderbird version 128.10.2esr (64-bit)

Is there any tool or log to troubleshoot this issue?

Greetings!

I downloaded a theme that I really like for Thunderbird, but I would like to ask for your help. I would like to change part of the frame to a different color (similar to the one on the left), but I don't know how to do it. I am attaching a photo where I have circled the part I would like to change with red lines.

Thanks for your answers!

Igor

I have added my local CA to the Certificate Manager (CA.png). When I try to send, I get the "confirm security exception" message (CertError.png). Viewing the certificate gives the data in Server.png and CACert.png.

The server cert is properly signed: $ openssl verify -CAfile ca-chain.cert.pem Mercury2.i-pi.com587.cert.pem Mercury2.i-pi.com587.cert.pem: OK

Why am I getting the certificate error when the CA is loaded into Thunderbird?

OS: Ubuntu 24.04.2 LTS patched as of just now. Thunderbird: 128.10.2esr (64-bit) Thunderbird is installed by snap: $ sudo snap info thunderbird name: thunderbird summary: Mozilla Thunderbird email application publisher: Canonical✓ store-url: https://snapcraft.io/thunderbird contact: https://www.thunderbird.net/contact/ license: unset description: |

 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: 3 days ago, at 10:48 MDT channels:

 latest/stable:    128.10.2esr-1 2025-05-23 (734) 220MB -
 latest/candidate: 128.11.0esr-1 2025-05-23 (735) 220MB -
 latest/beta:      139.0b4-2     2025-05-20 (731) 236MB -
 latest/edge:      ↑                                    

installed: 128.10.2esr-1 (734) 220MB -

I am running TB 138 and still have some issues with the layout and UI. How can I customize the spacing and font size for the "From", "To", "CC" and "Subject" fields? I much prefer the old TB interface where all these fields were much closer in terms of spacing, and the subject line font was same the size as the rest, in bold. Any way to customize this?

Thanks in advance.

How to make Thunderbird not display the total number of messages, it's driving my OCD crazy, I've been looking for almost an hour and still can't find where to set this.

1. I want to put the pane for reading the message in the middle of the layout. I really dislike having to crane my head right all the time.

2. The old css code to enter into Chrome/userChrome.css was:

'/* puts message page in the middle */ threadPaneBox {-moz-box-direction: reverse !important;}'

3. What is the new one? ___________________________________________________________ PERIPHERAL INFO A. I know how to do the rest of it, such as toolkit.legacyUserProfileCustomizations.stylesheets =true B. Change to vertical layout

Because of extensive travel, I always copy my profile folder from one computer to the other so all the accounts' folders are current--including Local Folders. Every time, things are fine. This time, something is off. I know the stmp setting for each account should show the login password for that account. One account is just fine. The other two change each other so I get an error message when trying to send outgoing mail. When I look at the stmp settings, I see that the password for Account A was changed to the password for Account B. If I correct Account B's setting, Thunderbird immediately changes the password for Account A. To send outgoing mail from either account, I must now check which password shows for both accounts.

I've read everything I can find about anything that seems related to my problem but I cannot find my exact problem.

What can I do?

I can't figure out how to get a threaded view for a conversation in Thunderbird to behave the same as a threaded view for a conversation in Outlook.

1. From what I can tell, the ASCENDING setting works as expected: a) Single messages and thread topics in the selected folder are sorted ascending by date b) Messages within a thread are also sorted ascending.

2. The DESCENDING view does this, which I feel is confusing: a) Single messages and thread topics in the selected folder are sorted descending. For threads, it weirdly uses the timestamp of the FIRST message in the thread instead of the most recent message. b) Messages within a thread are sorted ascending instead of descending.

3. I would prefer the DESCENDING view to do this: a) Single messages and threads in the selected folder are sorted descending. For threads, it should use the timestamp of the LAST message in the thread. b) Messages within a thread should be sorted descending instead of ascending.

Is there a way to get behavior 3?

Thanks!

I created a new email account in TB and wanted to have Templates Folder in it. Instead Templates is all the way down in Local Folders.

I was trying to move it using the following steps:

navigated to "Account Settings", then "Copies & Folders" then changed the desired location for templates from Local Folders to the new email account mailbox folder. The new setting has been saved, however Templates folder is still where it was initially...

Why and what to do?

Thx

Please teach me how to quickly jump to the folder where I have saved an attachment file on my PC soon after I saved the file? I want to open the attachment file soon after I have saved it to a folder I selected upon saving it. Does Thunderbird have a function to indicate the folder to which I have saved an attachment file on my PC?

Typically if I experience a security certificate exception, thunderbird will popup the certificate exception box, I click to get certificate and am done.

Today I cannot get the certificate popup to appear. which is fine I know where the certificates are managed but I have not a clue how to add a certificate OR what information to enter into the "Add security exception" dialogue box

Any help would be greatly appreciated.

I went into the Settings, under Calendar, and unchecked "Show week number in views and minimonth"

On the main page, my view is the Accounts on the left, the reading and message pane in the middle, and Events pane on the right.

In the Events pane on the right, it displays the date at the top and CW ##.

I would like to remove that CW ##. If the option I unchecked does not apply to the events pane, can you make another option to does remove CW or make it the option I unchecked work for that also?

See screenshots.

I've inadvertently made some change to 'Open with' so that when I add an attachment I can not open it within the email I'm sending. It opens for the recipient but not for me. When I click on the attachment nothing happens. It doesn't occur for all attachments but it seems to be for any attachment requiring 'Photos' as the option to open. Can you help please?

Hello,

I am a super happy user of Thunderbird calendar since many years.

Now that my kids have a lot of activities I am facing an annoying display issue with the upper part of the calendar in the Week view showing all days event : it is too small to show all events at once and hence proposes a scrollbar to navigate inside it (the attached image shows it for Tuesday May 13)

To solve that, I would be super happy just to select the "horizontal line" separating the all day events pane from the one below and then drag it to increase the height of the all day events pane. Unfortunately this is not possible.

So my question is : how can I increase the height of all day events pane so that I can see all my all days events at once ?

Thank you very much for your help,