NotificationAPI

The service provides a set of HTTP‑based APIs that let developers send and receive messages across multiple channels, including email, SMS, voice calls, and—upcoming—WhatsApp. Each channel is accessed through a unified `send` payload, allowing a single request to specify the message type, recipient, and channel‑specific content such as subject lines, HTML bodies, or spoken text. The platform also supports inbound processing, exposing received messages via webhooks and a dashboard that shows detailed event timelines.

It is aimed at developers building real‑time alerts, authentication codes, marketing campaigns, or any workflow that requires immediate user communication. The APIs are positioned as “trigger‑ready,” meaning they can be called directly from application code or automation tools without additional infrastructure. Features such as A2P 10DLC registration, self‑managed IP options, and observability logs help teams monitor delivery, engagement, and errors.

Distinctive aspects include a single endpoint model for multiple media, built‑in handling of regulatory requirements for SMS, and a free tier that does not require a credit card. The platform also offers real‑time debugging tools, webhook integration for inbound messages, and a roadmap that adds conversational WhatsApp support.