Abstract: The subject matter described herein includes methods, systems and computer program products for a redundant, geographically diverse, and independently scalable message service (MS) content store system. According to one aspect, the system includes a content store function (CSF) including at least one content store (CS) configured to store message service messages, initiate delivery attempts for the message service messages, and maintain a message retry attempt schedule for unsuccessful delivery attempts. The system also includes a message server function (MSF) including at least one message server (MS) configured to route and deliver the message service messages, wherein the MSF is scalable independently from the CSF.