> Thunderbird mail header rearranged / disappeared

Please post a screen shot. Thanks

> When I right click on an email in the right pane, I no longer have the option to "Save As" HTML or PDF. Other Save As options are also missing.

Please post a screen shot. Thanks

See attached images.

Save - PDF was a right mouse click option on the currently viewed email. It may be associated with the Extension - ImportExportTools NG.

Ctrl+S will display the Save As dialog to save as eml, txt or html format. You can export a message to pdf with ImportExportTools NG, but on W10/11 it's easier to Print (Ctrl+P) a message and select Microsoft Print to PDF in the Destination (printer) drop-down.

There are several posts on this forum that explain how to move the Menu Bar to the top:

https://support.mozilla.org/en-US/questions/1422908

Moving the Menu Bar to the top worked great - Thank You!

I understand the Ctrl+S and the Ctrl+P methods to create a file. The previous Save and then select PDF was a much simpler and faster method to create a PDF of a email message. The Save - PDF option would request a Folder to place the PDF file in and you were done. It automatically gave the file a name from the Subject. I believe the Save - PDF option was a ImportExportTools NG Extension

IET NG v. 14 for TB 115 is available here:

https://addons.thunderbird.net/en-US/thunderbird/addon/importexporttools-ng/versions/

Right-click a message(s) in the Threads Pane, Export Messages As, PDF format.

I currently have ImportExportTools NG Version 14.0.0 : Thunderbird v115 Support - September 26, 2023.

The missing Save menu (may have been Export Messages) was the top choice when you right mouse clicked on the displayed email message.