Thanks for the ideas! The pricing expectations are good to hear. We're planning on going with the freemium strategy, so there will be a version of an app for everyone.
If you'd like to stay updated, here's a link to our website: http://juicymail.co. Feel free to sign up or ask anything else that's on your mind.
Conversation view and killer search also make great sense.
If free, show me a nice add; otherwise, I am happy to buy. Bonus for long term, like 2 year service pricing advantages.
Email is not a thing I want to think about much. Just works, just use
Good luck, have fun!