Really Good Emails - A large collection of good product email design.
Bizness Apps - Create your own app or become a reseller and build apps for others
Good Sales Emails - Best sales emails from great companies
GoodBarber - GoodBarber is a mobile app creation platform.
Great Email Copy - A dose of emails from around the web.
BuildFire - BuildFire is the easiest way for small businesses to build a mobile app in a matter of minutes for iOS and Android.