Plain-language terms.

EmailAuthLab is provided as a free tool for testing and learning about email authentication. It is offered as is, with no warranty. A passing result does not guarantee inbox placement, and a failing result does not mean every receiver will reject the message.

Acceptable use

Use the tools for their intended purpose: testing mail you are entitled to send and reading headers you are entitled to hold. Do not use them to attack, overload, or abuse the service or any third party. Test addresses are rate-limited and short-lived by design.

Results and the Wall

Grades describe what we observed about one real message at one moment in time. Publishing a result to the Wall is opt-in, and entries lapse when their share link expires after 90 days. We may remove Wall entries that are abusive or misleading.