Related Questions:
Is there a way to incorporate "group" info into an email template?
Can I add the Group Block to an Email?
Can I send the Room Block information in an Email?
Answer:
Document Elements, such as the Room Block Element cannot be added to Emails the same way they can Documents.
You can however merge in information as text in regards to the Group Block using the Group Merge Field selections. For more information on how to use Merge Fields please click here.