Amazon SNS
aws.amazon.compart of Amazon Web ServicesSMS and push
Pub/sub messaging that fans out to queues, functions, HTTP endpoints, SMS and push.
More in SMS and push
Azure Notification HubsPush notification engine for sending to iOS, Android and Windows devices at scale.1M push notifications
CourierNotification API with templates that routes one call to email, SMS, push, chat or in-app inboxes.10,000 messages/moEngageCustomer messaging and automation for SaaS: email, push, SMS, in-app tours and banners.1,000 active users/mo
httpSMSSMS gateway that sends and receives texts through an Android phone you own.200 messages/mo
KnockNotification API that fans one call out to email, SMS, push, Slack or an in-app feed.10,000 messages/mo
NovuNotification infrastructure with APIs and UI components for email, SMS, chat, in-app and push.30,000 notifications/mo
numverifyJSON API that validates international phone numbers and returns carrier and location details.100 requests/mo
OneSignalMessaging platform for push notifications, in-app messages and email to app users.10,000 emails/mo