PayPal Passthru is an additional service giving your buyers the option of paying for their order with PayPal or altcoins. With PayPal Passthru the funds go directly to your account, they do not go through our account at all and we don't collect any fees for this service.
PayPal IPNs are sent to our server and we translate them to our system so you only have to implement one IPN handler on your website (or install one of our shopping cart plugins).
To enable PayPal Passthru, simply go to the "What Coins To Accept
" page and enter your PayPal email address in the PayPal Passthru line and check the "Enabled" box.