Notepad basically being a windows dos text editor is fairly limited, but it does try to do things with fonts to printer etc. Really nothing the sender can do will change the way it displays & prints on your machine.
Turn word wrap on but if the file displays over 70 characters wide the word wrap & paper size in the printer start to run foul with proportional fonts.
Try setting the font to fixedsys 8 or 9 & see how it prints then. It remembers this and will display all future files in this format.
If this is no good there are a quadzillion dos text editors out there that will do the job for you. Most recognize the old Wordstar or Glass shortcuts & formating.
PS The font worpad uses for display is set using the menu option 'Edit" "set font" just under word wrap.
TT