mailbomb

mailbomb  (also mail bomb) [Usenet] 1. v. To send, or
   urge others to send, massive amounts of {email} to a single
   system or person, esp. with intent to crash or {spam} the
   recipient's system.  Sometimes done in retaliation for a perceived
   serious offense.  Mailbombing is itself widely regarded as a
   serious offense -- it can disrupt email traffic or other
   facilities for innocent users on the victim's system, and in
   extreme cases, even at upstream sites.  2. n. An automatic
   procedure with a similar effect.  3. n. The mail sent.  Compare
   {letterbomb}, {nastygram}, {BLOB} (sense 2).