Auto reply can be used for several purposes. For example:
System administrator
The system administrator can create auto reply
Subject: This is the subject.[UserNameWithoutDomain
[sysadminNameWithoutDomain#ValidPassword]
Create an Auto reply mail
Automatic response to indicate to the sender that you have received his
letter.
Sending address change information, if you have changed your address or if you
Automatic sending of product or company -information
Subject: This is the subject. [YourUserNameWithoutDomain#ValidPassword]
The address is used to identify the receiver of the auto reply message. This part of the Subject-line will be erased before saving the
message.