What is a spam trap email address? (Or, if you prefer the one word version, what is a spamtrap email address?) Perhaps more importantly, why do they matter? Here we explain spam traps, and how to avoid spam traps. People used to not really believe that spam traps existed, at least not so many of them that an email sender would really need to worry about having a spam trap on their mailing list. But they do exist, they are everywhere, and as an email sender you do have to worry about avoiding them. So let's start by explaining the definition of a spam trap, and where they come from.