Unsolicited Bulk Emails (UBE) are unsolicited or unsolicited emails, usually referred to as spam
. The word bulk refers to mass mailings. Unsolicited emails are divided into bulk emails and unsolicited
commercial emails (UCE). The latter have unsolicited advertising content
and acommercial benefit.
Both spam concepts are based on email addresses that are captured by search robots or traded by dubious mail brokers.