Tracking content shared over a network is described. Content with a mailing identifier and a recipient identifier can be transmitted to a recipient. The mailing identifier and the content can be associated with the recipient identifier. A request from the recipient to provide an application with access to the content can be received. The request can include the mailing identifier and the recipient identifier. A web page can be generated. The web page can include the content and can be associated with a second recipient identifier and a link. The request and the second recipient identifier can be associated with the recipient identifier using a forward identifier. A request to access the web page by a recipient friend using the link and the application can be received. The request to access can be associated with the recipient identifier. Reports can be generated and outputted.