Founder here... for obvious reasons, the article didn't dive too deeply into the technical details so happy to answer any questions on how we embedded Gmail into our App.
How are you going to avoid Google from shutting off your api access/detecting your client and blocking it?
If they deliberately and specifically don't want us doing this then we'll most likely just end up writing the email portions ourselves. For now this is a great way to have full email functionality relatively quick and easy.
I'd love to hear how you're handling authentication, embedding, interacting with iOS, etc. It's very interesting!
We're planning on writing a technical blog post on it next week at blog.streak.com - stay tuned!
For anyone looking for a bare bones CRM, this tool is extremely helpful. We use it for quoting multiple projects within a small team. Opinion of 1.
Have worked with the Streak team for a little while - they're incredibly sharp (and have helped us improve our product a ton). Congrats guys!