Nylas is two things:
1. APIs for developers that replace IMAP/SMTP/Exchange. Use this to build any app that integrates with a user's mailbox, calendar, or address book.
2. A new extensible email app, built on web technologies (Chromium+NodeJS). This is called N1 and was released about 2 months ago.
We sell the APIs as an infrastructure business (like AWS).
What is Nylas? The website doesn't seem to be written for me, but for PHBs. Apparently you have great business, design, and APIs, but what is it that those things do? Are you an email client? A server? A webmail service?
What makes you different from Gmail or from Mailpile?