Alice: name: Alice emails: ["alice@example.com"] plan: !Premium Bob: name: Bob emails: ["bob@example.com", "bob.doe@example.co.jp"] plan: !Family { shared_membership: 4 } country_code: 81 Dev: name: Developer emails: [${{ ENV(DEV_EMAIL:-"developer@example.com") }}] plan: !Standard country_code: 44