OneSignal - Customer engagement platform used by over 1 million developers and marketers; the fastest and most reliable way to send mobile and web push notifications, in-app messages, emails, and SMS.
Cold Email Hacks - Proven cold email templates and tactics for B2B startups
SashiDo.io - SashiDo is the Parse Alternative for busy people.
Cold Email Analyzer by Mailshake - Real-time analysis of email subject lines and copy
SmartPush - SmartPush is a push notification service provider that helps businesses increase customer engagement using web push notifications.
Mailshake - Mailshake lets you build your professional network through a smart and intuitive approach to cold emailing.