We all have them in our lives: Those people who constantly forward us emails, like chain letters or some nonsense about an urban myth.

Those emails can get pretty annoying, and sometimes downright offensive. But it that chronic spammer is your in-law or coworker, asking them to stop forwarding you emails can get awkward. Lucky for us, StopForwarding.Us does the dirty work for you.

This website lets you send that chronic spammer a polite and anonymous email telling them to chill out on the email blasts. It even includes a link where they can get more tips on modern email etiquette, in case they’re really clueless.