We have different service desk projects on one instance. Most of them are connected to email channels --> customer permission are set to "anyone can raise requests" --> everytime someone sends emails a customer with this mail-adresse is created.
Problem: some of this emails (and further customers) are privat email adresses and only agents should be able to see and use them.
How can we prevent that customers can choose this privat emails when selecting request participants --> right now if they start typing a name, they get both - the privat and the business email adress
