Dmail is the first mail application based on Web3.0 and Dfinity technology that integrates NFT and distributed storage functions, and is dedicated to building a bridge between the traditional world and the parallel world. Compared with traditional mail, Dmail gives rights of control back to users. Users can manage and access data with their private keys, and can also determine the future trend of the product through community Governance. Dmail is committed to providing users with a permanent service without a centralized server, and meanwhile ensuringe the ownership and privacy of data. Dmail is the foundation of communication, information sharing and collaboration of on-chain and off-chain users in the future. Specifically, it will serve as the basic communication and cooperation tool of the blockchain world, and the gateway for information exchange between the blockchain world and the real world. As an information interaction gateway in the new era, it will help users connect the whole blockchain world and the real world, and help users, developers, institutions and assets to build reliable interactive connection and build an information storage space that will never be lost in the blockchain world.