A method includes receiving a first request associated with a first user account, the first request comprising content of a first message and a first plurality of destination endpoints to receive the first message, for each first destination endpoint of the first plurality of destination endpoints, determining communication capabilities of a respective first destination endpoint, for each first destination endpoint of the first plurality of destination endpoints, selecting, from a first plurality of routing options, a first routing option for delivering the first message to the respective first endpoint based at least on the communication capabilities of the respective first endpoint, wherein the first plurality of routing options are associated with different communication services and, for each communication service, different channel protocols corresponding to different service provider, and causing one or more versions of the first message to be transmitted to the first plurality of destination endpoints using one or more first routing options selected for respective first endpoints.