
OneSignal
8.8#1 in push notification servicesFrom $19 a monthFree planAndroidiOSWebWindows
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OneSignal suits teams that need to coordinate messages across several channels and connect messaging with other business systems. Its Free plan is an option for individuals and organizations getting started, while higher plans address growing teams and organizations operating at scale.
It suits businesses in telecom, iGaming, finance and trading, or retail and eCommerce that want to target mobile messages using behavioral data. Teams can also use its analytics exports and messaging API with CRM and BI tools.