Whenever an order is placed on your site using the Sell Block, you'll receive an email alerting you that you made a sale, and the buyer will also receive one stating the purchase that they made.
Seller:
After a sale is completed, you'll get an email that a purchase was made on your site to the email address you specified when setting up the Sell Block. The email provides you with information such as product name, price, buyer email, shipping address (optional), as well as a button to contact the buyer.
Buyer:
The customer will also receive a receipt to the email they provided at the time of sale. The buyer email includes information such as item name, price, site item was purchased from, shipping address (optional), as well as a button to contact you (the seller).