Webhook Error: “POST to webhook target URL failed”
When you create a new webhook in the SparkPost UI, you may see an error similar to “POST to webhook target URL failed”:
This error occurs when SparkPost sends a test batch to your webhook endpoint and, if an error is detected during that test, this error is shown. There are a few common steps you can take to rectify the issue:
- Webhooks require you to publish an HTTP service (the “target URL” above) to receive event data. Your service must be in place before you register the webhook with SparkPost.
- Your receiving HTTP service must return a 200 status code when it successfully receives an event batch. Any non 200 response is treated as an error.