 payment gateways (PayPal, Stripe) Email Settings - Customize invoice and payment notification emails Invoice Templates - Manage custom invoice template designs Accessed via Invoices > Templates to create and manage custom invoice layouts: Design custom invoice templates Set default template for new invoices Create different templates for different invoice types Safe editing with preview capabilities Accessed via Invoices > Help for documentation and support: Plugin overview and features Status definitions and explanations Block documentation (if using Invoices block) Support bubble integration for contextual help Links to additional resources