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If your server is unavailable or returns an error, our system will automatically retry the delivery 25 times over a period of approximately 21 days. The retries follow an “exponential backoff” schedule, meaning the attempts happen frequently at first and then gradually spread out over the three-week period. If the delivery still fails after all 25 attempts, we will send an email notification to your registered address so you can investigate the issue.

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Retry Schedule

Here is an example of how the retry schedule would look for a single failed webhook:
  • 1st Failure: Retries almost immediately (within seconds).
  • 5th Failure: Retries after about 12 minutes.
  • 10th Failure: Retries after about 3 hours.
  • 15th Failure: Retries after about 14 hours.
  • 20th Failure: Retries after about 2 days.
  • 25th Failure (Final): Retries after about 4.5 days.
Total Duration: If your server remains down, the system will keep trying for a total of 21 days before finally giving up and sending you the “Retries Exhausted” email notification.