Help center  /  API & integration

Receiving webhooks reliably

Signatures, retries and resending deliveries.

Each delivery is signed with your webhook secret in the X-VerifyID-Signature header (HMAC-SHA256 of the raw body). Return a 2xx status within 10 seconds.

Failed deliveries are retried after 1 minute, 5 minutes, 30 minutes, 2 hours, 6 hours and 24 hours. Every attempt, with its status code and response, is listed on the Webhooks page, where you can also resend a delivery or send a test.