Really Good Emails - A large collection of good product email design.
Siberian CMS - Siberian is an Open-Source and Free App Maker. Unlimited Push Notifications. Unlimited features. Fully Customizable. Download it and build your own app now!
Good Email Copy - Email copy from great companies.
GoodBarber - GoodBarber is a mobile app creation platform.
Good Sales Emails - Best sales emails from great companies
Bizness Apps - Create your own app or become a reseller and build apps for others