Hands-On with nylas webhook test send: Send a test webhook event to a URL

Send a test webhook event to a URL. No web dashboard required.

The nylas webhook test send-URL command fires a simulated webhook event to any URL you specify. Choose the trigger type with --trigger (e.

Syntax

nylas webhook test send-URL --url URL --trigger TRIGGER

How It Works

Webhooks replace polling. Instead of checking every 30 seconds whether new email arrived, the webhook pushes the event to your endpoint within seconds. This reduces API calls and improves latency for your application.

Examples

Test with an email trigger:

nylas webhook test send-URL --url https://example.com/webhook --trigger message.created

Test with a calendar trigger:

nylas webhook test send-URL --url http://localhost:4567/webhook --trigger event.created

Common Issues

Connection refused
Verify the URL is reachable. For localhost URLs, ensure your server is running on the correct port.

Unknown trigger type
Run nylas webhook triggers to see all available trigger types.

Tips

Combine with other commands: Chain nylas webhook test send with other Nylas CLI commands using shell pipes and variables for complex workflows.

Debug mode: Add --verbose to see the underlying API requests and responses — useful when something doesn't behave as expected.

---

Full docs: nylas webhook test send reference — all flags, advanced examples, and troubleshooting.

All commands: Nylas CLI Command Reference

Get started: brew install nylas/nylas-cli/nylas — other install methods