This is the plain jane of the three formats. You’ll still have message options using the options button () and other icons on the standard toolbar, such as options to set importance. If you’re using Microsoft Word as the e-mail editor, you’ll also have some Word-specific options like spelling and grammar check and AutoText. However, all formatting options (including font style, size, and colour, bullets and numbering, themes, graphics, and tables) are disabled.

 

The great thing about plain text is that everyone you send e-mail to will be able to read it, regardless of what program they use to read e-mail. The price of that is that your message will be very plain.