An email autoresponder is an automatic reply that's sent when someone emails you—often used for things like out-of-office notifications, customer service replies, or confirmation messages.

To set one up in cPanel, log in to your account and go to the Email section. Click on Autoresponders, then choose Add Autoresponder.

Fill in the necessary details, such as the email address, subject, and message body. You can also set how long to wait before sending another response to the same person, and define start and stop dates for when the autoresponder should be active.

Once everything is ready, click Create/Modify to activate it. You can also manage or delete autoresponders from the same section whenever needed.