No, with remote checkout the email receipt should be handled through the gateway.
Part of the reason for this is that most remote checkout methods are not real time.
with paypal standard, when an order is placed, the transaction is put into a queue, it can take seconds or even days for the transaction to processed with the bank and the funds placed in your account.
you would need to configure your account to make an IPN post to your site, and set up the IPN page to send the email receipt.