# OneSignal

> OneSignal is a customer engagement software company that helps app and web teams send push notifications, in-app messages, email, SMS and RCS from one platform. Born from its founders' frustration with messaging at a mobile game studio, it pairs developer SDKs and APIs with audience segmentation, automation and measurement for marketers. The company says more than one million businesses use it.

- **Founded:** 2014
- **Headquarters:** San Mateo, United States
- **Founders:** George Deglin (Co-founder and CEO), Long Vo (Co-founder and COO)
- **Products:** Mobile and web push notifications, In-app messaging and Live Activities, Email, SMS and RCS, Journeys, OneSignal AI and MCP Server
- **Notable:** OneSignal says more than one million businesses use its platform and it sends about 12 billion messages a day., Opened a London EMEA headquarters in 2023 to serve an international customer base., Listed among Deloitte Technology Fast 500 companies for a fourth consecutive year in 2023, according to its news page.

## Products & services

- **Mobile and web push notifications** — SDK and API based delivery for app and browser notifications, with segmentation, personalization and analytics.
- **In-app messaging and Live Activities** — Messages inside apps and live updates on supported devices for onboarding, announcements and time sensitive information.
- **Email, SMS and RCS** — Campaign and transactional messaging channels managed alongside push in one platform.
- **Journeys** — Visual automation builder for behavior triggered, cross channel customer flows.
- **OneSignal AI and MCP Server** — Embedded conversational assistance and an external agent connection for querying data and operating platform workflows; introduced in 2026.

## Achievements

- OneSignal says more than one million businesses use its platform and it sends about 12 billion messages a day.
- Opened a London EMEA headquarters in 2023 to serve an international customer base.
- Listed among Deloitte Technology Fast 500 companies for a fourth consecutive year in 2023, according to its news page.
- OneSignal lists ISO 27001 and ISO 27701 certification alongside SOC 2 Type 2 compliance.

## Latest updates

- **2026-09** — Free plan adds more AI and Journeys access while introducing a 1,000 MAU cap for mobile push and in-app messaging for new customers; existing customers transition October 1.
- **2026-08** — Released retention cohort metrics and a Journeys API; conversion metrics became generally available across plans.
- **2026-07** — CEO George Deglin outlined a strategy for increasingly autonomous lifecycle marketing.
- **2026-05** — Introduced the OneSignal MCP Server in open beta and OneSignal AI through early access.

## Links

- Website: https://onesignal.com/
- LinkedIn: https://www.linkedin.com/company/onesignal/
- Twitter/X: https://twitter.com/onesignal
- GitHub: https://github.com/OneSignal/
- YouTube: https://www.youtube.com/channel/UCe63d5EDQsSkOov-bIE_8Aw
- Instagram: https://www.instagram.com/onesignal/
- Facebook: https://www.facebook.com/onesignalapp/

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Profile page: https://yespress.io/onesignal
Published by YesPress — https://yespress.io
Last updated: 2026-09-29