Clients on version older than 1.21.9 cannot render the heads.
ChatEmoji replaces :name: key in chat messages with player head emojis.
Players can list all emojis with /emoji.
There's a server style that can be switched trough with /emoji style <default/apple>. only with permission chatemoji.admin. (style also changeable in config.yml)
Enable only players with permission chatemoji.use in the config.yml.
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