If this is checked, EagleFiler will show all e-mail messages in plain text format. For HTML-only messages, a plain text representation will be created. The font will always be the Plain text font specified in the Fonts settings, and no images will be shown. Levels of quoting will be indicated using angle brackets and the chosen Quoted Text Colors. The display will adapt for Dark Mode.
See also: Message ‣ Rich Text and Message ‣ Use Quick Look.