sending and receiving binary through MS Outlook

I'm working on an application to read e-mail.
I have a different platform sending data through email and to conserve space I am sending the data in binary. My biggest problem is that certain charactors are used by Outlook as control codes and Outlook manipulates the data.

Does anyone know of a methode of temprarily "turning off" Outlook's response to control charactors? If not does anyone know of a email program that will do this?

I've thought of sending the data as an attachment but I beleive that too adds a lot of data to my message. I am very limited on the amount of space each message can contain, I beleive it's 104 bytes, so I would like to get as much data as possible without using up space for control codes.
For referance here are the ascii codes that I cannot receive correctly;
00, 10-13, 145-151, 160, 173.
I know what some of these control codes are, so I know what Outlook is trying to do, but that doesn't help me to receive them.
With a VB application I can create a file with codes 0-256 and read the file back correctly so I am pretty sure it is the email system that is createing the problem.