Tool profile
Customer messaging platform for push, email, SMS, in-app messages, and journey automation.
Mobile apps needing push + email lifecycle campaigns
OneSignal combines mobile push, web push, email, SMS/RCS, and in-app messaging with journeys and segmentation. Paid Growth plans pair a platform fee with channel usage fees.
Per onesignal.com/pricing, Free is $0/month with 10,000 free email sends/month, unlimited mobile push sends, core journeys, A/B testing, and GDPR positioning on the plan card. Growth starts at $19/month plus usage: the feature matrix lists mobile push at $0.012 per monthly active user (MAU defined as active mobile subscription records in last 30 days, including users not opted into push because in-app messages can still target them), web push at $0.004 per subscriber, and email at $1.50 per 1,000 sends after 20,000 free emails/month on Growth. Professional and Enterprise are annual custom contracts with higher journey limits, support SLAs, and advanced personalization.
Live Activities, SMS/RCS, and some webhook steps may require sales conversations on lower tiers. Compare Braze or Iterable for enterprise marketing clouds; compare Customer.io for developer-triggered journeys; compare Firebase Cloud Messaging when zero SaaS fee matters and you accept build cost.
Quick fit
Editorial take
Mobile MAU billing counts active app users, not only push-opted users—this surprises teams optimizing for push reach alone. Model web subscribers separately from email sends. Growth’s $19 is a floor; calculator output depends on all three channels. For alternatives, Braze/Iterable win enterprise; Customer.io wins event-trigger complexity; FCM is free but you build everything.
What it does well
Primary use cases
Fit notes
Compare with
Pressure-test this pick against nearby alternatives.
Pricing snapshot
Free: $0/mo — 10k emails/mo, unlimited mobile push, limited journeys (onesignal.com/pricing). Growth: from $19/mo + usage: ~$0.012/mobile MAU, ~$0.004/web push subscriber, $1.50/1k emails after 20k/mo included. Professional / Enterprise: custom annual. SMS/RCS: sales-led on public matrix.
Agora
Free planRealtime voice, video, and livestreaming in customer-facing applications
Realtime engagement platform for voice, video, chat, signaling, and AI conversation features with broad usage-based pricing.
Choose Agora when platform breadth across realtime products matters more than open-source control.
