A Two-Tiered Approach to Dealing with Spam J ust as there is junk mail, there is also junk email.
Junk email is called spam.
Spam is defined as email that is sent to hundreds or thousands of people usually for marketing or political purposes. But spam can also be in the form of chain letters. We've received numerous questions about how to deal with spam that is sent to JPL computers from the outside. T here are basically two ways. The first approach is to treat it like a telemarketing phone call.