Ways in which mail programs modify the body of a message?

[Michael.Young%cmu-cs-g at sri-unix.UUCP]

A good way to escape most of the problems you mention is to use "uuencode"
and "uudecode" (if you have them, or something similar if you don't).
Of course, your receiver has to understand to decode them, but that
would probably be clear anyway.

			Michael