An email filter is a software application that hinders undesirable messages from reaching a particular inbox. A considerable percentage of the email communication around the globe involves spam email messages: offers for pills or money, fraudulent banking notifications, etc. That’s why, it’s really important to enable filters to avoid not only spam emails, but also any possibility of being scammed somehow. Spam filters detect various things, so as to provide better safety – certain words and phrases or the frequency with which they appear in the text, the sender’s email address, or the IP of the sender’s SMTP email server. Web hosts frequently make use of the services of 3rd-party spam-tracking organizations that provide up-to-date databases in order to make spam filtering better and simpler without affecting authentic messages, even if they comprise suspicious words or phrases.