If you want your users to save their searches, navigate to Theme Options > Searches >> Settings and locate the panel below. Select Yes to use the save search feature.
Once a user saves a search, he will receive a periodic email notification that groups all new properties that match his search criteria. In the Send Emails drop-down select the periodic expiry with which you want to send emails.
NOTE: Saved Searches functionality requires that users be able to log in and register and add a new page where users will find a list of all the searches they have saved using the template: User Dashboard Saved Search.