Pocket queries
From Cacheopedia
Pocket Queries are a premium member feature of geocaching.com. They allow you to search for caches with the features you want (less than 3.5 difficulty, caches I haven't found, kid friendly, etc.) within a certain area. You can get up to 500 caches in your email, and the file includes all the cache information (hints, owner, logs). The file is delivered in GPX format.