OneSignal

OneSignal helps developers simply implement re-engagement messages in their mobile applications and websites, and we do it by taking care of a lot of the complexity on our side. Each day we deliver over 5 billion daily notifications (4x more than the number of emails SendGrid sent on their IPO), for nearly 1 million registered developers (More than Twilio on their IPO). When you pick up your smartphone, the first thing you see is a push notification - maybe there’s a breaking news alert, a message from a dating site, or football scores… Whatever it is, chances are it came from us.