There is no doubt that e-mail has already taken a large part of people's online activity these days. It is now the main departure point for registering at various websites and resources. Any internet user has at least one, if not many e-mail addresses registered and used for various goals, be it a person-to-person communication, receiving different newsletters, updates, or simply as a two-level authentication tool for log-in security measures. While this all sounds useful indeed, there is a dark side to this - a huge and new opportunity for cybercriminals to deliver illegitimate and intentionally malicious content to users. Such a phenomenon is known as e-mail spam. Many e-mail services are always developing new and improving existing algorithms to detect potential spam and prevent inexperienced users from falling into the evil hands of various frauds. These anti-spam mechanisms are educated enough to identify potentially unwanted messages based on different triggers (sender's IP-address reputation, spammy language content, world-known blacklists, etc.). Having some e-mail letters categorized as spam should push users to be more careful and less trustworthy with regard to the message. Unfortunately, there are cases when spam goes undetected being delivered straight into your Inbox. A large number of newsletter subscriptions accumulated over long-time usage can also create a flood of unnecessary messages blurring your eye. Whatever it is, we are going to show how one can get rid of e-mail spam and slow its frequency rates. The guide below will give useful recommendations with guidelines for the world's most used e-mail services like Gmail, Yahoo, Apple Mail, and Microsoft Outlook.