This feature is only available in Professional and Enterprise Editions.
If enabled, the Search Only E-Mails Created or Modified Since the Following Date (MM/DD/YYYY) setting prevents Identity Finder from searching any E-Mails that have not changed since the date specified. This feature enables you to increase the speed and performance of Identity Finder's search and is especially useful if you recently ran Identity Finder but did not have the Searching Only E-Mails Created/Modified Since Last Search option enabled and only wish to search E-Mails modified since that previous search.
To view or change these settings, click the Settings button on the Tools and Options ribbon.