An email filter is an application that hinders undesirable messages from reaching a given inbox. A significant percentage of the email communication around the globe involves spam email messages: offers for pills or cash, false bank notifications, etc. Because of this, it’s quite important to set up email filters in order to avoid not only unsolicited bulk emails, but also any possibility of being scammed in some way. Email filters detect different things, so as to provide higher levels of safety – certain words or the frequency with which they appear in the text, the sender’s email address, or the IP address of the sender’s outbound SMTP server. Hosting companies frequently make use of the services of third-party spam-tracing organizations that provide up-to-date databases to make spam filtering easier and more efficient without affecting authentic emails, even if they include suspicious words.