Last updated: August 13, 2026
Technical analysis only
Results are generated from the source supplied, documented rules, browser measurements, and limited remote-resource checks. A finding can help locate a likely issue, but automated analysis cannot understand every design intention, business requirement, accessibility need, or sending-platform transformation.
No delivery or inbox guarantee
A score or passing report does not guarantee delivery, inbox placement, sender reputation, authentication, spam-filter outcomes, engagement, or campaign performance. Those results depend on infrastructure, domains, content, list practices, recipient systems, and other factors outside the supplied HTML.
No universal client preview
The editor and live preview render in a browser. They do not emulate Gmail, Outlook, Apple Mail, Yahoo Mail, or every device and accessibility configuration. Email clients may sanitize HTML, ignore CSS, block images, rewrite links, or apply dark mode differently. Send real test messages through the intended production workflow before release.
Remote checks can be inconclusive
Remote servers may reject automated requests, require authentication, time out, redirect unexpectedly, or return a different response to an email recipient. “Unable to verify” is not proof that a destination is broken or safe. Confirm important links and images manually.
Your responsibility
You are responsible for the legality, accuracy, security, licensing, consent, accessibility, and final use of content you provide or send. Keep independent backups and review generated suggestions before applying them. The website content is general technical information and not legal, compliance, security, or deliverability advice.
See the Terms and Conditions for the service rules.