> For the complete documentation index, see [llms.txt](https://docs.explodely.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.explodely.com/ipn-for-sellers/ipn-types.md).

# IPN Types

There are 3 types of IPN our system sends:

1. Sale IPN – Its triggered when a sale of any of your product happens (including test sales).<br>
2. Refund IPN – Its triggered when a refund of any existing sale inside your account happens.<br>
3. Rebill Cancel IPN – Its triggered when a rebill is cancelled.