Experts can't easily reach a client once they've booked. Right now the only way is to dig the client's email out of the calendar invite.

This would let experts:

- Send a client a message before a session, to share prep, confirm details or ask a quick question.

- Follow up afterward with notes, next steps or a reminder to book again.

- Contact a client who didn't show up to reschedule.

Messages would stay inside EveryExpert, so both sides keep a record of the conversation in one place.