SENTRY and NAVCOM are operated purely for the benefit of the community, with no expectation of payment or contribution. I run them because I love building useful things and watching other people actually use them. That is the joy. That is the work.
The best thing you can do — by a wide margin — is to use these services and share them with other pilots, orgs, and friends. Tell someone about SENTRY. Invite a squadron to NAVCOM. That is how this stays alive, and it is the contribution I value most.
If you still feel you want to send money, you are welcome to. Every dollar that arrives this way, plus some of my own, goes into improving the services the community uses. None of it goes into my pocket.
Buy Me a Coffee is the donation flow we use for friends in the United States.