So, you've seen an ad online for a job you like the sound of. You jump at the chance to reply to the email address. You fall over yourself in a rush to type out something quickly because you reallllly like the sound of this job and you just know that you are perfect for it.
This system runs what’s known as a safe list. The safe list is a database of email recipients that have given permission to be mailed making it ‘safe’ to email. Usually safe lists are communities of marketers that are mailing each others offers.