Hop Email is now Spike.
Spike upgrades the way you work, saving you and your team time, sanity, and a lot of headache. Cutting the distractions of old-fashioned inboxes, Spike gives you the cleanest, fastest productivity tool, all from within your inbox.
Automatically sending emails to my contacts without even asking is a dick move. Now everybody is irritated with me and I'm irritated with your product. Ignore your "growth hacker" and exercise some restraint. If the product is good it will grow organically.
My wife and I have adopted this app wholesale. We live in it. We have feedback and feature requests. If the developer would like us to post here, let us know. We're happy to provide.
It turns email threads to conversations which is very nice.
Also the way it separates real email from newsletters - it's so simple but works excellent.