Abstract: In one embodiment, systems and methods for preventing messages from being redistributed are provided. A social-networking system may receive instructions from a user to create a messaging campaign. The instructions may include a blocking instruction. The system may identify a target user of the social-networking system to whom to present a message associated with the messaging campaign and present the message to the target user. The system may receive from the target user an input associated with the presented message. The input may be configured to cause the message to be presented to one or more other users connected to the target user within a threshold degree of separation in a social graph. In response to the input from the target user, the system may determine that the message is associated with the blocking instruction and prevent the message from being presented to the one or more other users.