Flood someone's inbox (4)
I believe the answer is:
spam
(Other definitions for spam that I've seen before include "Junk emails" , "Send unsolicited mail" , "luncheon meat" , "unwanted correspondence" , "Computer junk mail" .)
I believe the answer is:
spam
(Other definitions for spam that I've seen before include "Junk emails" , "Send unsolicited mail" , "luncheon meat" , "unwanted correspondence" , "Computer junk mail" .)