An auto-responder email is a an email that is sent from your mailbox as the answer to every email that you get. The content is predetermined and is sent automatically, so each individual that contacts you via electronic mail will receive it the instant their e-mail is received on the server that handles your emails. This function is used if you have to notify individuals about various things, including being out of the office for a specified period or that an purchase has been received and is being prepared. The auto-responder email furthermore operates as a confirmation for the people who make contact with you their email has been received, even if you are not able to read it and get back to them right away. It could include any kind of text of your choosing and also it may be edited depending on the exact occasion.
