Sorry @Zyje_sobie, little misunderstanding. You can use customer email tokens here. For first name - %Customer.FirstName% last name - %Customer.LastName% Full name - %Customer.FullName%
In that case, we don't have their names. So, it is not possible to add their names. But if you want, you can add a common string for them by checking if the customer name is NullOrEmpty.