In this tutorial we will learn how to secure emails by encrypting them using S/MIME function. There are trusted certificates available online by CA (certificate authority) but you can also create SSL certificates (self signed SSL certificate) by yourself. The procedure is given below:
S/MIME is a key paired system. It has one public key and one private key. For example if you want to send some encrypted emails from your system then receiver i.e. to whom you are sending the encrypted email must use S/MIME and his public key must be known to you. Sending an email signed with the certificate is the method to send someone your public key.