wp-email-templates

Use when adding or refactoring transactional emails in a WordPress plugin — extracting inline HTML strings into reusable templates sharing a branded base shell, implementing the render_template helper (ob_start / include / ob_get_clean), passing variables safely with extract(EXTR_SKIP), sending via wp_mail(), testing with MockPHPMailer / tests_retrieve_phpmailer_instance(), applying table-based HTML layout and inline CSS for email clients, or handling wp_mail send-failure branches. Triggers: \"send an email from my plugin\", \"wp_mail not working\", \"add an email template\", \"style my plugin emails\", \"HTML email in WordPress\", \"branded email wrapper\", \"email not arriving\", \"test my wp_mail\", \"add a CTA button to the email\", \"make emails look good in Outlook\", \"transactional email template\", \"render_template helper\", \"ob_start for email\", \"extract EXTR_SKIP\", \"MockPHPMailer in tests\", \"tests_retrieve_phpmailer_instance\", \"pre_wp_mail filter to test failure\", \"inline CSS email\", \"dark mode email support\", \"table-based email layout\", \"wp_mail headers\", \"email not sending in tests\". Not for: REST API webhooks, push notifications, or transactional email in themes.