In previous versions of Microsoft Outlook (the classic app), you could view the HTML code of an email by opening the email, right-clicking on it, and selecting “View source” from the context menu.

How to Display Email in HTML in Outlook 2007. Microsoft Outlook 2007 supports both plain text messages and HTML emails that contain links, formatting and graphics.

I have tried Google, and I have even tried asking an Outlook MVP. I now turn to the hive-mind. Is there any way to insert HTML into an email similar to the ...