A search folder is really a hybrid of all the other organizational tools: it looks like a folder, it acts like a search, and you set it up like a filter. In other words, a conventional folder actually contains messages, but a search folder is a view of messages that might be in several different folders. The messages it contains are determined on the fly using a set of criteria you choose in advance.
Bilaketa-karpetak beste antolaketa-tresna guztien hibrido bat dira: karpeta normalen itxura dute, bilaketa moduan funtzionatzen dute, eta iragazkiak bezala ezartzen dira. Beste era batera esanda, karpeta konbentzionalak benetako mezuak edukitzen ditu, eta bilaketa-karpetak karpeta desberdinetan egon daitezkeen mezuen ikuspegia ematen du. Bertan dauden mezuak unean-unean erabakitzen dira aldez aurretik aukeratutako irizpide batzuen arabera.