The Plain Text Editor works in a similar way to the HTML Editor, but with no more than very basic layout options.
It is possible to switch between Plain Text and HTML format whilst composing a message but be cautious as moving from HTML format will lose all of your formatting, though the content and basic structure of the message will be preserved.
Please click a HotSpot on the image below for further information.
This is different to that in the Main Window as different functions are available here.
Click on a hotspot on the image below for further information.
This is available either from the main menu, or by right-clicking on the message body. More details are here