You can email scores and updates of your bulletins to:
1. players who have subscribed to receiving email notifications and whose emails are registered on their rise.global profiles (accounts).
2. followers of the scorebook - by default, a follower has to register their email against their rise.global profile (account)
Since the bulletin is sent as a transactional email, you are only allowed to email when you have new scores/updates to share with your users & followers i.e. you are not allowed to use the email channel to send general messages.
The default email is shown below but you can customise the content of the email to a certain extent including adding images and content sections.
To access the email share channel, go to Share -> Email within your adminstrator dashboard
You can see email engagement stats by viewing the bulletin stats via the bulletins page: