OneSignal review 2026: push notifications, email, SMS and in-app messaging for apps. Compare pricing plans, features and top alternatives like Braze.
OneSignal is a customer engagement platform that unifies push notifications, email, SMS, and in-app messaging for mobile and web applications. Founded in 2011 in San Mateo, California, it has grown into one of the most widely used messaging infrastructure providers, delivering more than 8 billion messages per day.
The platform is particularly popular among app developers because of its generous free tier and straightforward SDK integration across major mobile and web platforms, making it a common default choice for startups and indie developers before they scale into larger engagement platforms.
OneSignal supports multi-channel messaging (push, email, SMS, in-app) from a single dashboard, with audience segmentation, automated multi-step messaging journeys, and A/B testing built in.
Its 'Intelligent Delivery' feature optimizes send timing per individual user, and the platform provides delivery analytics, conversion tracking, and GDPR-compliant data handling for teams operating in regulated markets.
OneSignal's Free plan covers 10,000 monthly email sends and unlimited mobile push notifications, making it usable at no cost for small apps.
The Growth plan starts at $19/month plus usage-based fees, while Professional and Enterprise tiers offer custom, volume-based pricing with expanded journeys, segments, and support for larger organizations.
Yes, OneSignal offers a free plan that includes 10,000 monthly email sends and unlimited mobile push notification sends, along with basic segmentation and A/B testing, suitable for small apps and early-stage products.
The Growth plan starts at $19/month plus usage-based costs (for example, $1.50 per 1,000 emails beyond the included allotment, and $0.012 per monthly active user for mobile push). Professional and Enterprise tiers use custom, volume-based pricing.
OneSignal supports mobile push notifications, web push notifications, email, SMS, and in-app messaging, all managed from a single dashboard.
OneSignal was founded in 2011 by George Deglin and Long Vo, and is headquartered in San Mateo, California.
Firebase Cloud Messaging is a free, more basic push notification service from Google, while OneSignal offers a more full-featured platform with segmentation, automated journeys, multi-channel messaging, and analytics, available on both free and paid tiers.
Yes, OneSignal supports multi-step automated messaging journeys, with the number of active journeys and steps expanding across higher-priced plans.
OneSignal has raised approximately $84.2 million in total funding across multiple rounds, from investors including SignalFire, Y Combinator, and HubSpot.