I am interested is there a way to send the order summary email after the user has finished paying through PaypPal?
Hi Mirko,
After the transaction has completed successfully, PayPal (optionally) sends back a notification (IPN) to any URL of your choice. This is the only way of knowing that a transaction is complete
Couch's cms:paypal_button works using the above-mentioned IPN (http://www.couchcms.com/docs/concepts/paypal.html).
CouchCart, however, currently cannot use the IPN because it does not store in database any info about the 'orders' (to process IPN it'd need to tally it with the corresponding order).
So, I am afraid, but this'll have to wait till CouchCart has a proper order management function.