Answer:
Spam
Explanation:
Spam is unsolicited bulk messages, that is, messages sent to multiple recipients who did not ask for them. The problems caused by spam are due to the combination of the unsolicited and bulk aspects; the quantity of unwanted messages swamps messaging systems and drowns out the messages that recipients do want. Spam has been a problem in many different media, and invariably arises whenever a medium allows people to send many messages without per-message charges.
