Systems, methods, and computer-readable storage media for providing a notification system are disclosed. The notification system may be configured to select one or more notification requests from each of a plurality of notification request queues, and generate a plurality of attempts for each of the one or more selected notification requests. The attempts may be assigned to one of a first plurality of attempt queues, and flow control logic may be executed against the first plurality of attempt queues to dynamically select attempts for transmission from among the first plurality of attempt queues. Selected attempts are inserted into one of a second plurality of attempt queues, and a plurality of connectors may be configured to select attempts from the second plurality of attempts queues for transmission via a communication channel.