Dropbox Paper, Dropbox's collaborative document product, now includes a document creation and editing endpoint within its API. Prior to the new endpoint, the Paper API was limited to document sharing and downloading. Now users can access Dropbox Paper's full functionality within 3rd party apps.
So you need to send emails. Pretty simple right? Not so fast. It doesn’t matter how easy your language or framework makes sending emails, if you try to do it on your own be prepared to configure mail servers, setup Spam-related DNS entries, and still wonder if mail is actually being delivered. And your applications needs to process incoming email? Back to the config files, piping mail to your script - or just end up polling a POP or IMAP box. That’s what I had to do, back in the day. Fortunately, like so many things today, there’s an API for that. Actually there are a few.