A messaging system, including at least one server configured to receive a message from a originating device for delivery to at least one recipient device via a first delivery channel; wherein the at least one server is further configured to select an alternate delivery channel in the event that delivery of the message via the first delivery channel cannot be effected. There is also a method for routing messages including the steps of receiving, at a server, a message from an originating device for delivery to at least one recipient device; forwarding the message to the at least one recipient device via a first delivery channel; awaiting receipt of an acknowledgement message from said at least one recipient device, and in the event that no acknowledgment message is received, the server resending the message to said at least one recipient device via an alternate delivery channel.