In order to create catch-all email address in cPanel please do the following:
Step 1. Log in your cPanel account.
Step 2. Find "Default Address" option in "Mail" menu.
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Step 2. On the new page choose domain name from drop-down menu, check option "Forward to email address" and enter email address to which emails will be forwarded.
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Step 3. Click on "Change"
Done!