Maintaining Communication Methods for External Companies and External Contact Persons 
Purpose
Communication methods can be maintained for external companies and for external contact persons. A standard address is specified for each communication method and is transferred in the send operation.
Prerequisites
In order to create company-specific or person-specific communication methods, you must display the company maintenance or contact person maintenance screens.
You require authorization for the following transactions:
Process Flow
Result
It is possible to send directly to an external contact person from the send screen.