Canary Mail for Teams Licenses are assigned per user and are valid across all platforms (macOS, iOS, Windows & Android) and geographies.
Under Subscription, you can specify the number of licenses for your Organization (1 license per user).

Canary Mail for Teams Licenses are assigned per user and are valid across all platforms (macOS, iOS, Windows & Android) and geographies.
Under Subscription, you can specify the number of licenses for your Organization (1 license per user).