In the digital world, e-mail is the most commonly used method of communication since 1993. It has become a significant part of the business world. Therefore, the Force.com platform provides a forceful, secure, and authenticate e-mail service as a part of the application. The Force.com platform handles almost all the messaging tasks for you, and you have to only focus on the business logic. Once you configure the e-mail functionality for executing a particular Apex code logic, your incoming e-mails will use the e-mail service according to the logic that you have implemented. Then the service will send out e-mails accordingly.

The e-mail services of the Force.com platform accept standard e-mails from any e-mail client. This simple e-mail can invoke one or more actions from the e-mail service. The Force.com e-mail feature allows us to apply some additional security controls because this simple e-mail can have an affect on the business functions of the application.

The...