PRODUCTION ONLY — customer email templates for frontend email editor.
Files: _renewal_notice.php (7 days prior), _renewal_success.php (after confirmed payment AND database update), _renewal_failed.php (failed payment).
Templates expect $data with keys first_name, domain, amount, term, next_bill_date, end_date. HTML output can be captured with output buffering by the future sender. No password in email.
These templates do not send email on their own. Existing email editor integration must be connected/verified separately.
