hashmail is a unified web3 mailbox that allows dapps and users to exchange messages simply with their wallet address, or any decentralised identity (ENS, Unstoppable Domain, or Lens handle). Users can also send messages from their web2 emails to web3 wallet addresses hashmail is multi-wallet i.e. users can connect multiple wallets across chains into one unified inbox dApps use hashmail APIs to communicate important updates - notifications, alerts, reminders & more directly to a wallet address