Configure the subject line for payment confirmation emails: Field Type: Text input Default: "Payment Received - Thank You" (or similar default) Character Limit: Recommended max 60 characters for mobile display Supports Placeholders: Yes - use dynamic variables for personalization Examples:
                
                    "Thank you for your payment on {invoice_number}"
                    "Payment confirmed - {amount_paid} received"
                    "Receipt for invoice {invoice_number} from {company_name}" "Thank you for your payment on {invoice_number}" "Payment confirmed - {amount_paid} received" "Receipt for invoice {invoice_number} from {company_name}" Customize the email message body for payment confirmations: Field Type: Rich text editor (WYSIWYG) HTML Support: Yes - full