On many pages on the StreetEasy site you will see a “Save” button. This button saves the item and notifies you by email whenever there are any changes.
Searches: You will be notified whenever new listings come on the market that match that search, or when there are price changes for listings matching the search.
Buildings: You will be notified whenever listings close or come on the market for that building.
Listings: You will be notified of price or status changes for a listing.
Discussions: You will be notified whenever there are new messages posted to a discussion.