An auto-responder is usually a predefined email message, which is sent automatically as an answer to each and every email received in a mailbox with this option enabled. The two most typical examples for taking advantage of this option are automated e-mails that one is briefly away from the office or that an order has been received successfully. An auto-responder may also be used as a basic confirmation that the email has been delivered successfully, which may be something quite important in business communication. The message that is delivered can be pretty much anything and can be modified based on the conditions and what the auto-responder will be used for. As the feature is enabled server-side, there isn’t anything you have to do manually and you don't need an e-mail application to be enabled at all times for the automatic reply to be delivered to the individual sending you an e-mail.
