Return Path helps commercial email senders get more email delivered to the inbox. Our tools and professional services give senders the insight and resources to achieve higher inbox placement rates and improve email response and ROI across the customer lifecycle. Return Path also runs the internet's most widely used third-party whitelist, the Return Path Certification Program and invented the Sender Score, an email reputation measure based on data contributed by ISPs and receivers of large volume email into the Return Path Reputation Network. Free access to our Sender Score can be obtained at www.senderscore.org. To learn more about Return Path, visit www.returnpath.net.