Invaluement is a combination of 3 DNSBLs that can be used as an "add on" in most email and spam filtering systems. Our data pinpoints the most elusive spams that often slip past many filters, where those spams are also missed by other DNSBLs. If you manage your own mail server, then you can most likely benefit from using invaluement as a sort of plugin to your existing spam filtering system! The setup time for invaluement is typically less than 10 minutes, it typically integrates directly into your existing spam filter, and requires no hardware or software installation. The pricing is very affordable, and we offer a free 7-day trial.