Remy Sharp wrote webmention.app because it seemed like webmention notification systems were thin on the ground, and wanted to use a notification system that was agnostic of the user software.
The service is currently free, and will remain so, as it is able to run on a single server with little to zero maintenance.
If you want to contact there's a few ways:
- For bugs, issues and software feedback: github
- For private/offline message: my website
- To hire me for custom development: my working details
If you want to say thanks to support the project: You can buy (some) drinks ❤️