Email receipt for payments through website

[integapp]

I have a Pay Now button on my website, and my clients use it to make payments for my appraisal service. How can I include an automatic email receipt upon receipt of their payment? If you need to see the page in order to see the code, it's https://integrityappraisals.com/paynow.htm

[Here-to-help]

Hi @integapp ,
I think there's no direct feature like that.  Usually Paypal sends the email to buyer and seller when the order is placed via Paypal payment method. 

If you want to use a custom email to be sent out on sucessful payment. Here's how you can try. 
you can set up PayPal's Instant Payment Notification (IPN) or use PayPal Webhooks, if you have a more advanced setup.
Once the IPN/webhook enabled on your account, PayPal will send a notification to the IPN/webhook endpoint URL whenever a payment is made.  Once you get the message

• Validate the message.
• Check the payment status (it should be "Completed" for IPN, "PAYMENT.SALE.COMPLETED" for webhooks).
• Send an email receipt to the customer using your server’s mail function or an email API.

refer to paypal documentation on IPN and webhook feature.