MetaMail is the web3 email provider. With MetaMail users use wallet/ENS as email address, and sign/encrypt to ensure the security. We are using KNN3's recommendation service to help users find their potential friends.
During EthShanghai Hackathon, we are using KNN3's recommendation service to help users find their potential friends.
KNN3 provides a powerful yet easy-to-use service; The best part is that the recommendation algorithm is pluggable, and new recommendation methods can be used in the future as the project develops, or as the user prefers.