manley there is a few ways to contact your direct referrals.
The first way is when you get a direct referral, you are sent nofi which includes the new member email address.
(it won't include it if the new member prefers to make it private)
The second way which pertains to the first way, you can simply hit on the email address in the notif to send them a welcome message.
The third way is to make sure you have a message typed in within your member area.
When those you sponsor log into their CS member area, they can read the message you typed.
The fourth way is to make sure you have not made your email address private so that they can contact you.