Remy Sharp wrote MX:BIN because he owned a lot of domains but 99% of which did not have monitored email addresses.
Those domains did not need to be monitored, but every now and then, a single email needed to be captured for a particular domain. This project started as a small Node.js script and has evolved into a single purpose service.
The service is currently free, and will remain so, as it is able to run one a single server with little to zero maintenance (and is monitored consistently).
Still want to say thanks or support the project? You can buy (some) drinks ❤️