When a webhook delivery to your endpoint fails, Recurly will automatically retry sending the notification using an exponential backoff strategy. This helps ensure reliable delivery without overloading your server.

Key details

• If Recurly receives a non-2XX response from your webhook endpoint, it will schedule the notification for retry.
• Each notification is retried up to 10 times; after the tenth failure, no further attempts are made.
• Retries occur in the same order notifications were created.
• The interval before each retry grows exponentially, approximately following:

10 + x * 2^(x + 5) seconds

Where x is the current retry attempt (0-indexed). Early retries happen quickly, and later retries space out substantially.