Direct Mail keeps a history of each message delivery, including what message was sent, when it was sent, and who it was sent to. If you have Direct Mail Pro and choose to enable delivery tracking, the delivery history will also report who viewed your message, who clicked any links in your message, what addresses bounced, and a host of other statistics.
To track your message, click the "Track delivery statistics" checkbox in the "Send Messages" window. >
This feature is available only to Direct Mail Pro users.