What network is Dmail on?

I'm curious to know what network Dmail is utilizing. Could you please elaborate on the specific blockchain technology or network infrastructure that Dmail is built upon? Understanding the underlying technology is crucial in assessing the security, scalability, and potential of any cryptocurrency-related service. Additionally, it would be helpful to know if Dmail is a decentralized application (dApp) running on a popular blockchain like Ethereum or if it has its own unique network architecture. Clarifying this information would provide valuable insights into the functioning and potential of Dmail.