Orchid Digest is distributed in "multipart-alternative" format. That means the email is embedded with both the plain-text version, and the HTML version, of the message. When people can't (or won't) view HTML email, the plain-text version displays instead.
How to Turn On or Off HTML Rendering on a MAC OS
Follow these steps to turn on or off HTML rendering, as desired:
- Open Mail.
- Choose Mail > Preferences.
- Click the Viewing icon in the Preferences window.
- Select or deselect (as desired) the checkbox for Display images
and embedded objects in HTML messages".
If you prefer to display plain-text part instead of the more “stylish” HTML or Rich-Text parts. While this cannot be configured via the GUI, it can be from the command line.
defaults write com.apple.mail PreferPlainText -bool TRUE
defaults delete com.apple.mail PreferPlainText
Mail.app should be closed while you do this.