You must have a default printer set in the control panel and the printer must be online. This oddity extends to other apps too.
Bob
Even after doing as suggested in HELP....
(Tools - Options - Mail Format Tab --> set Plain Text OR MS Outlook Rich Text)
Kindly advice of a way to Print Preview my mail before printing a copy if required.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic