Invite Systems are an Open Relay

Every time I think I've seen it all from spammers, they do something that surprises me. The ingenuity of bad actors is an interesting thing. I always wonder what sort of world we'd live in if their efforts were focused on good. What sucks the most is when they abuse something that's intended to bring people together. Case in point, an invite system. It exists to allow somebody the chance to get the rest of their team using a product or service. Invites wouldn't work if they said "You've been invited to platform" with no additional context. Typically the email states the name of the organization you're being invited to. "You've been invited to your organization name here". Where does that organization name come from? The user of course! And what happens if the user has ill intentions? They set the organization name to something like "Text 1-800-555-1212 for a good time", or something even sketchier than that. Generally speaking, these emails come through transactionally and from a…