Poco Printing FAQ - Making print fit on a page

Q: Does anyone know any sneaky tricks to make 1.5 page long e-mail messages resize to fit on one page when I go to print them?
Try using FinePrint. There's a trail version that doesn't expire. It's limited to 8 pages and prints an ad at the bottom of the page but it might do just what you want.

You could also copy/paste into a word processor and adjust the margins/fonts till it fits.

You could also save the email to a text file and use a program like textprint (freeware), which prints multiple pages on one sheet.