Notilify

Notilify is an SMS infrastructure service for developers. Through one REST endpoint you send transactional messages such as one-time passcodes, account alerts and security notices, and a sample request posts a sender name, a phone number and message text with an API key and an idempotency key. Seven official SDKs are listed as available.

The platform adds delivery tracking, real-time webhooks that report status changes, sender identity planning and support visibility into what happened to a message. The site frames the problem as undelivered codes and notifications, such as a login code that never arrives or a shipping update that gets lost, and points to carrier filtering, regional compliance and sender ID rejection as the messy parts it handles. The listing also mentions scheduling of messages. Pricing is described as predictable, with details on a separate pricing page, and the site includes docs, use cases and a how-it-works section.