A local post is a mail service that operates only within a limited geographical area, typically a city or a single transportation route. Historically, some local posts have been operated by governments, while others, known as private local posts have been for-profit companies. Today, many stamp collectors operate hobbyists' local posts, issuing their own postal stamps known as "locals" or "cinderellas" for other collectors but rarely carrying any mail.

In philately, a cinderella stamp is a label that resembles a postage stamp, but which is not issued for postal purposes by a government administration. There is a wide variety of cinderella stamps, such as those printed for promotional use by businesses, churches, political or non-profit groups. The term excludes imprinted stamps on postal stationery.