High Quality Content by WIKIPEDIA articles! Boxbe is a service that purports to screen spam in personal email. It presents a challenge to the sender that requires a human response. Marketers can get email through the screen for a fee. However, Boxbe is considered by some security experts to be malware, because when a user enrolls in the service, Boxbe repeatedly sends unsolicited emails to the new user`s contacts. Moreover, it "spoofs" the user`s email address, making it appear as though the user is recommending the service to his or her contacts.