The Bold Report server will notify the end user through the email for action like Profile edit, Reports collaboration, Report Scheduling, etc. All the email send from report server will have predefined subject and header, and we cannot change it.
This feature will allow you change email header and subject either with dynamic or static content.
In some case, it may require to change the email header and subject dynamically based on the context of the email sent
Example: Changing the email subject with report name for all scheduled email.
In some case, email subject will be the same for all email, but you can define your own subject.