Verify that your email is authenticated | ESPCOverview The ESPC feels that email authentication is critical for establishing and maintaining email credibility and accountability. In fact, adoption of email authentication is mandatory for ESPC members. To encourage adoption by ALL senders, The ESPC has partnered with ESPC member Port25 to provide this testing tool. The tool allows you to check the format of any DKIM, DomainKey, SenderID or SPF
