Retries
If your service has problems handling notifications at any time, we will attempt to re-send failed notifications up to 10 times.
We will retry in the following cases:
Connection Failed - If we cannot open an http connection to the provided webhook URL Timeout - If your service takes longer than 1 second to send back a response to a batch of notifications Error codes - If your service responds with an HTTP status code that is not one of: 400, 401, 403, 404, 405
Retries will occur with an exponential backoff based on the next attemptNumber. So the first retry will happen in 2 minutes, the second retry in 4 minutes, the third retry in 8 minutes, etc.