Kingmailer WordPress SMTP Security & Risk Analysis

The kingmailer-smtp plugin v0.3.15 exhibits a strong security posture based on the provided static analysis. The plugin demonstrates good practices by implementing nonce checks and capability checks on all identified entry points, including the single AJAX handler. Furthermore, the absence of any critical or high-severity taint flows, coupled with the fact that all SQL queries utilize prepared statements, indicates robust handling of potentially sensitive operations. The plugin also avoids common risks like bundled libraries or raw SQL queries without proper sanitization.