LiTMAS, Lifetime Mail Account Services, based in Tokyo is a company to provide lifetime email addresses for the individuals, who belongs to lifelong communities such as university alumni group and hometown local coterie. We also provide community services for those communities. We will sustain the email address till the end of life, with forth coming intelligent smart contract, to smoothly pass their online property to the next generations or suspend. We also provide state of the art social technologies such as DAO, Decentralized Autonomous Organization, and planning to utilize advanced social graphs to leverage the power of the communities.