Localytics - App analytics and marketing for iPhone, iPad, Android, HTML5, Blackberry and Windows apps.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Liftoff.io - eCommerce & web to print platform
Brevo - Innovative online Email Marketing solution to manage your contacts, create & send your newsletters and track your results. More than 80 000 clients. Best prices and attractive features.
Widdit - Widdit provides tools that help app developers create an interactive online experience for users on both PC and mobile ecosystems.
Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.