To unsubscribe from alerts, select the “Alerts” link in the top left corner of your account. From here, you can deselect the checkbox next to alerts you are no longer interested in receiving information for. You can delete alerts that are no longer relevant to your search
You can also unsubscribe from Zumper alerts directly from the email. Simply scroll to the bottom of the message and select the "manage notifications" link. Select the unsubscribe from all notifications option and save your updates.
This will prevent you from receiving any further correspondence on Zumper alert emails for that particular search. If you have alerts selected to multiple searches, you will need to unsubscribe from each one.