> ## Documentation Index
> Fetch the complete documentation index at: https://docs.chip-in.asia/llms.txt
> Use this file to discover all available pages before exploring further.

# Delivery Protocol

> Learn about CHIP Send's webhook delivery and retry policy.

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.

## 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.