DomainKeys is a technology that verifies that email is from the domain it appears to be from. CertifiedEmail^™ messages go further, assuring you of three things:

1. That the sender of the message is legitimate, and has been verified by Goodmail as the true owner of the brand being represented.
2. That you have an existing relationship with this sender, either because you opted-in to the sender's email (such as for newsletters or email updates) or because you’re an existing customer (for example, if you make a purchase, which triggers a payment confirmation).
3. That the sender of the message meets strict best-practice standards set by Yahoo! and managed by Goodmail. Twos such standards are 1) maintaining very low spam complaint rates and 2) including an unsubscribe function in all emails as required by law, etc.

For more information about CertifiedEmail^™, please visit the CertifiedEmail^™ web site.