A system (200; 300) and method for messaging subscription management by subscribing a subscriber (210; 310) to a publisher (215; 315), providing a broker (220; 320) brokering message flow between the publisher and the subscriber whereby the publisher publishes information to the broker which then forwards the information to the subscriber, and filtering messages whereby any messages not originating from the publisher are filtered out. The filtering may comprise modifying (227) at the publisher a filter supplied by the subscriber and sending the modified filter to the broker, or may comprise modifying (312) at the subscriber a filter and sending the modified filter to the broker. This gives the behaviour of a direct subscription model, while making use of the efficiencies provided by the brokered model. It allows publishers to offload responsibility for subscription management and message distribution to a broker service, and it can reduce the number of logical connections from n*m to become n+m instead. Subscribers and message sinks are completely unaware that a broker is being used.