Ability to select which family contacts receive an email

It would be helpful when sending an email to an account to be able to select which contacts are receiving the email.

Examples:

• sometimes all caregivers need to be contacted about a situation, but the student needs to not be included

• if a specific parent is in charge of paying tuition, it would be useful to send an email to that parent and their student, but be able to leave the other contacts out of it.

• an emergency contact may need to be copied on an email, but they wouldn't need to receive most emails from the studio