ReadNotify is the most powerful and reliable email tracking service that exists today. In short - ReadNotify tells you when email you sent gets read / re-opened / forwarded and so much more.
All messages sent via ReadNotify benefit from our SPF compliant and Sender-ID compliant mail servers. This confirms safe transmission of your messages, and also enables us to report delivery status to you (including: bounce-backs, delays and success notifications). Delivery information is listed in your Personal Tracking Page.
Try hovering your mouse over the sections in our Live Sample Receipt for more information.