Computer networks have been known to be quite insecure due to the fact that emails sent or received can be intercepted and manipulated before they get to their intended destinations. This in most cases usually causes losses as the data sent may be used maliciously against the sender or the receiver. There are people who usually hack into such networks with the intention of stealing data that is on transit or even manipulate it maliciously to cause losses.
Among the best and most commonly used methods of enhancing email security is the acquiring of SMTP service from service providers. Simple Mail Transfer Protocol or simply put as SMTP is a service that is used to secure emails.