So, I really don't understand what Inbox is. From what I'm reading, it looks like an API to access email messages: perform queries, modify them, etc. Does tha

So, I really don't understand what Inbox is. From what I'm reading, it looks like an API to access email messages: perform queries, modify them, etc. Does that sound right? If it is, then what are the "email applications" that require this API? To me, the problems with email are its plain-text nature, spam and managing the vast quantity of mail we get. Does Inbox help here?