Notification extractions rules are used to extract parameter values to keys, so you can then map the parameters to objects, such as keys.
This means that you can extract values from the notification without using them right away as parameter values. You can instead bind them to controls and display them to the user, or use them later on in the Hybrid App to submit a create/read/update/delete (CRUD) operation or object query.
Define the notification extraction rules when you create a server initiated starting point. Notification extraction rules include a regular expression that determines from where in the notification message the parameter value starts, and another regular expression that determines from where in the notification message the parameter value ends.
Some e-mail clients allow you to specify the To: and From: fields without quotes (for example, John Doe <john.doe@sap.com>). The actual value received by the Unwired Server may have quotes in it (for example, "John Doe" <john.doe@sap.com>), which any extraction rules that act on those fields must consider.