Configure the subject line that appears in customers' email inboxes: Field Type: Text input Default: Professional subject line provided by plugin Character Limit: Recommended max 60 characters for mobile display Supports Placeholders: Yes - use dynamic variables for personalization Customize the email message body that displays invoice details to customers: Field Type: Rich text editor (WYSIWYG) HTML Support: Yes - full HTML formatting available Features:
                
                    Text formatting (bold, italic, underline, strikethrough)
                    Font and color selection
                    Link insertion
                    Lists (ordered and unordered)
                    Alignment controls
                    Paragraph formatting Text formatting (bold, italic,