ShipMsg API

Build on WhatsApp with ShipMsg

ShipMsg is a WhatsApp Business API platform. Send messages and templates, receive replies, run campaigns and track every delivery through one REST API with honest statuses: a message is only “delivered” when WhatsApp says so.

Start in the sandbox

Every account comes with a sandbox: a test WhatsApp number, test recipients that behave in predictable ways, and no charges. Nothing sent from the sandbox reaches a real phone. Follow the quickstart.

QuickstartSend your first sandbox WhatsApp message in about ten minutes.Authentication and keysSandbox and live keys, scopes, IP allow-lists and request signing.Sending messagesText, templates, media, interactive buttons and lists, locations and more.WebhooksReceive delivery statuses and inbound messages, and verify every signature.Event catalogueEvery event your endpoint can receive, with the fields it carries.ErrorsEvery error code, what it means and what to do about it.SDKsOfficial libraries for Node.js, Python, PHP, Go, Java and .NET.API referenceEvery endpoint, parameter and field, generated from the live contract.

How the API works

REST and JSON. Every resource lives under /v1/accounts/{AC}/…, where AC… is your account SID. Resources are named by prefixed IDs: SM… messages, WA… senders, TM… templates, CT… contacts.
Asynchronous delivery. Sending returns 202 with a queued message. Its later statuses arrive as webhook events.
Safe retries. Every write takes an Idempotency-Key; the SDKs add one for you.
Dated versions. Send ShipMessages-Version to pin the behaviour you built against. See versioning.