Reports -> In the report definition (Reports -> Definitions), select the option for email, then choose email format. AirWave report emails will be sent after the report has completed.
Alerts -> In the alert definition (System -> Triggers), select the option for email for the alerts you want to receive via email. These alerts will be sent when AMP has processed data that sets off the trigger.
These only work if you have the correct settings for AMP to email. To use the built in mail settings (Postfix), just configure the mail relay host in AMP Setup -> General -> Additional AMP Services box. This article will provide steps on how to do that from the CLI: http://kb.airwave.com/?sid=50140000000Mf9J.