Get the International Cryptography Law Survey by Bert-Jaap Koops for more information specific to your country. If you need to disguise the fact that you are sending and receiving encrypted mail, the simplest way is to use steganography . This is a process which turns your encrypted mail into something resembling plain text sentences and paragraphs . In some ways, cryptography is like pharmaceuticals. Its integrity may be absolutely crucial.
Bad penicillin looks the same as good penicillin.
The ciphertext produced by a weak encryption algorithm looks as good as ciphertext produced by a strong encryption algorithm. There's a lot of snake oil out there. A lot of quack cures. Unlike the patent medicine hucksters of old, these software implementors usually don't even know their stuff is snake oil. They may be good software engineers, but they usually haven't even read any of the academic literature on cryptography.