An auto-responder email is a a message that is sent from your mailbox as the answer to each and every e-mail that you get. The message is predefined and it is sent automatically, so every person who contacts you via electronic mail will get it as soon as their message is received on the system that takes care of your email messages. This function is used when you need to inform people about different things, for example being out of the office for a specified period or that an purchase has been received and is currently being prepared. The auto-responder email additionally serves as a verification for people who make contact with you that their e-mail has been received, even if you're not able to read it and get back to them at once. It can contain any kind of text of your choice and also it may be modified depending on the particular occasion.