An auto-responder email is a an e-mail which is sent from your email address as a answer to each and every email that you get. The content is predefined and is sent automatically, so each individual that contacts you via e-mail will get it as soon as their e-mail is received on the system that handles your e-mails. This feature is used when you need to notify people about different things, like being out of the office for a specified time period or that the purchase is received and is currently being processed. The auto-responder email also serves as a verification for anyone who get in touch with you that their e-mail has been received, even if you are not able to read it and get back to them immediately. It can include virtually any text of your preference and also it can be revised based on the particular occasion.