The fact that I have a strange mind and read your first line as talking about large people aside, most all email programs have a max file size. For most people, that is not a problem simply because they don't send 50Mb plus size files.
The 'problem' you are referring to has nothing that can be changed at your end, but rather is with your email service. I have seen some services that focus on handling large files, but unfortunately, I can't come up with any of their names. You could do some goggle searches and hopefully, you'll find one.