Systems, methods and communication gateways for delivering timely, cost efficient and scalable user alert messages are disclosed. Using electronic communication media, user alert messages are generated by a communication gateway at the request of a requesting entity, such as a credit card issuer. The alert message is associated with a message identifier and then routed to one or more message aggregators based on the content of the alert message initiation request and a routing table. If the first selection of message aggregators is not available or otherwise unable to deliver the user alert message, then the communication gateway can reroute the user alert message to another message aggregator or queue the message for later delivery. The communication gateway can monitor and log the status and ability of the servicing message aggregator in the routing table to better facilitate timely delivery of the user alert messages.