From the developer: With Email Coder, you can easily crypt you emails in one click so as no one can see these, unless he has the password you crypted the text with. You must define a common password with your recipient and then, you emails are just readable by you two. If you send a crypted message to a friend, it stays crypted in you friend email programs. It can be decrypted only in Email Coder. It is very useful if your computer is used by several people.