Try it first
Postman collection — try sendlz before you write code
Fork the collection, drop in a sandbox key and fire every endpoint from your machine. Environment variables are pre-wired for sandbox and production.
What is in the collection
Pre-request scripts
Idempotency keys generated per request so retries behave like production.
Sandbox environment
Test number, test inbox and seeded templates ready to send against.
Webhook receiver
A mock server URL you can point the account at to watch events land.
Negative tests
Requests that deliberately fail, so you can see the error shape before you handle it in code.
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