SendGrid webhook returns 404 to ngrok

Question

I am using a webhook to listen for Mail Send events (open, click), and I keep getting 404 being returned to my ngrok URL. If I use a webhook tester URL, it works. Is there a configuration issue that needs to be set with ngrok and SendGrid?

Answer 1

My bad, I was calling the wrong route. This fixed it for me, I changed from /event to /api/v1/event.

I initially called the route like this /api/v1/event but, I did not get any trigger from SendGrid then I removed it. I realized that it takes time for SendGrid to make a post request to my route because of the queuing system.