Most of the email messages sent around the globe nowadays are spam, i.e. unwelcome messages with different offers or with links to malware. Not only are such emails aggravating, but they also present a risk to your own computer, not to mention that you may be scammed. Because of this, many email providers resort to email filters, which are software apps that monitor all incoming email messages and filter the undesirable ones on the basis of their content – what words or phrases an email message contains and how many times they’re mentioned, what site a specific link leads to, what outgoing SMTP server the message comes from, and so on. Some providers also make use of the databases of spam-monitoring organizations dedicated to providing the most up-to-date info about unwelcome messages, to make certain that their clients won’t get any message in their inbox that is not supposed to be there.