Recently I had a concern that CX need to delete the 20 days old emails automatically. This is steps I have followed to do this.
We need to set the cron by using cpanel >> cronjob and add the following command to run in cron.
/usr/bin/archivemail –quiet –delete –days 20 /home/{USER}/mail/inbox
By using above command you can delete the 20 days old emails . Make sure you
replace {USER}with your actual cPanel Hosting account username.
Thank you for your time !!!!!!!!!!!!!1