Hi gtlady79,
Welcome to Apple Support Communities.
It sounds like there is an issue printing emails on your Mac. The article linked below has some tips that may be able to resolve the issue for you, even if it is for a different version of OS X than the one you are using now.
Mac OS X 10.4: About printing Mail messages, wrapping text, and font sizing
http://support.apple.com/kb/TA23932
Rewrap message to fit
Mail strictly maintains the specified font size of the message with this option. This means that the text of the message will likely wrap differently on the printout, so that the width of the printout doesn't exceed one page. The printed document won't look exactly like it does on the screen. Also, because points per inch on a display is not the same as on paper, the printout may appear smaller than expected. Increase the font size before printing if desired, or use the "Keep the same apparent font size" choice.
Because printed text may wrap differently, this choice may not be best for printing structured text, such as a web page's HTML code, or an indented or nested list.
Cheers!
-Jason