Didn’t know you can use custom domain with Alby’s lightning address. Setup is basically as straightforward as the Nostr domain verification: a json file into the .well-known directory structure.

Neat, it seems to work.

https://guides.getalby.com/overall-guide/alby-lightning-account/where-to-use-your-lightning-address/how-to-use-your-own-domain-in-your-alby-lightning-address