Full-disclosure: I work at a company building an open source email client (https://nylas.com/N1) and an API to simplify email (https://nylas.com/docs)
Little question: do you plan to support PGP?
Full-disclosure: I work at a company building an open source email client (https://nylas.com/N1) and an API to simplify email (https://nylas.com/docs)