I wonder if it's possible with some tricks to build a message box on top of a regular DHT (distributed hash table) as commonly found in many P2P network impleme

I wonder if it's possible with some tricks to build a message box on top of a regular DHT (distributed hash table) as commonly found in many P2P network implementations. There is no need to guarantee that the message is stored for a certain amount of time as long as the protocol knows whether the other party has received it or not: you can just put it into the DHT again as long as it's not received.