Receiving spam mails can be annoying, especially if it affects daily operation and cause email users to become less productive. Without a proper email filtering mechanism, email users have to manually read through each email received, they may miss out on highly important emails that need to be prioritized and put to high attention. If no filtering is applied, email users will receive all types of email, including emails with malicious contents such as viruses, malware and more. This will risk the users' computer to data breach, as viruses and malware infect the computer and cause harm to the files and folders stored in the computer.