Follow these steps to create an email autoresponder in cPanel:

1. Log in to your cPanel account.
For instructions on how to log in to your cPanel account, please click here.

2. Under the Email section, click Autoresponders.

3. Under Add Autoresponder, click the Add Autoresponder button.

4. Fill out the following fields to configure your autoresponder.

Interval: The number of hours you want the autoresponder to wait between responses to the same email address.
Email: Enter the email address on which you want to enable autoresponder. If you enable autoresponder on support@example.com, enter "support: in the email field. (Select the appropriate domain from the dropdown list if you have multiple domains.)
From: Enter the name that the auto-response will be from.
Subject: Enter your email subject.

Body: The content your email will be autoresponding with.

5. Configure the settings of when you want the autoresponder to start and stop.

6. Click the Create button.

7. It will confirm that the autoresponder has been successfully added.

8. Your newly created autoresponder will now appear under Current Autoresponders.