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Developer Toolkit

SendiMessage Developer Toolkit

Explore SendiMessage architecture, build verified API requests, simulate message flows, inspect webhooks, and map your integration before going live.

Recommended journeyEvery step is optional — jump straight to any tool below.

How to use the Toolkit

Planning your architecture?Start with Fit Checker or Integration Builderopen it →
Writing integration code?Use API Request Builderopen it →
Testing behavior?Use Message Flow Simulatoropen it →
Handling webhook events?Use Webhook Debuggeropen it →
Estimating rollout?Use Pricing Estimatoropen it →

Ready for a real messaging line?