An email filter is a software application that obstructs unsolicited emails from entering a given mailbox. A huge percentage of the email traffic around the globe involves spam messages: offers for pills or cash, fraudulent bank notifications, and so on. Because of this, it’s pretty important to use filters in order to avoid not only unsolicited bulk messages, but also any possibility of being swindled somehow. Email filters detect various things, so as to deliver higher levels of protection – particular words or the frequency with which they occur in the text, the sender’s email address, or the IP of the sender’s outgoing SMTP server. Hosting providers frequently use the services of third-party spam-monitoring organizations that offer up-to-the-minute databases to render spam filtering better and easier without affecting genuine emails, even if they contain suspicious words or phrases.