Disclosed herein are system, method, and computer program product embodiments for crowdsourcing e-mail filtering. An embodiment operates by receiving an input from a community member indicating that an e-mail received by the community member is unwanted, counting a number of inputs received from community members indicating that e-mail is unwanted based on one or more criteria, flagging future e-mails based on the criteria when the number of inputs counted reaches a threshold for penalizing an originator or a group associated with the originator of the unwanted e-mail, and denying delivery of future e-mails from the originator or the group associated with the originator until a penalty period expires.