The Challenge of Testing SendGrid Webhooks Locally
SendGrid webhooks are powerful—they let you track email opens, bounces, clicks, and delivery status in real time. But testing them locally is frustrating. Your webhook endpoint lives at localhost:3000, which SendGrid can't reach from the internet. You're left juggling ngrok tunnels, managing temporary URLs, or pushing code to staging just to verify that a bounce event triggers the right database update.
The core problem: test SendGrid webhooks locally without exposing your machine, and without losing the ability to inspect and replay payloads when something breaks. This article walks through three production-ready approaches—from manual tunneling to local webhook relaying—so you can debug with confidence.
Prerequisites
SendGrid account with API key (free tier works)
