Terms of service.

The plugin

Email Cascade is free software licensed under GPL-2.0-or-later. It is provided as-is, without warranty of any kind. Email delivery depends on your hosting environment and on the mail providers you configure; we cannot guarantee that any particular message will be delivered.

Live Test service

Live Test is optional and off by default. When you enable it, the plugin sends small test emails through your own configured providers to our verifier to confirm delivery. The service is offered on a fair-use, best-effort basis: automated verification traffic only, subject to rate limits. We may refuse slots or throttle traffic that looks abusive, and we may change or discontinue the service at any time. There is no service-level agreement. See the privacy policy for what data the service handles.

Acceptable use

Do not use the plugin or the verifier to send spam, to harass, to break the law, or to probe the service for vulnerabilities. Provider accounts remain your responsibility and are governed by each provider's own terms.

Changes

These terms may change; the current version always lives on this page. Effective: September 2026. Questions: contact us.