This activity is used to specify who is responsible for a business mail. The Main Representative option in the Representatives section indicates which of the records has the main responsibility. When a business mail is created, the current user will automatically be added as the main representative. If there is an e-mail address in the mail message which belongs to a Person who is a representative, that representative will also be added to the business mail.
As a result of this activity, responsible persons are connected to the business mail.