The FPC is the heir and guardian of Portugal's extremely large and rich historical, scientific and technological communications heritage, a sector with over 500 years of history in postal services and 200 years in telecommunications services.
The collection also includes works of art and a vast collection of original drawings for Post Office stamps and postcards, as well as the Collection of Stamps of Portugal, whose earliest item dates back to 1853, and a collection of stamps from the former Portuguese colonies.

The heritage is grouped into three large collections - Postal, Telecommunications and Art and Philately - and is mostly accessible by the public, both via the exhibitions at the Museu das Comunicações and in the Digital Catalogues on the FPC website.

The Foundation's Documentation and Information Center, which includes the Historical Archive, Iconographic Archive and Library, looks after all of the FPC's documental heritage.
The Library contains a vast collection of written heritage, the earliest volumes and documents of which date back to 1877.

One of the Foundation's goals has always been to develop the theme of communications in the primary aim of supporting research, education and other ends related to the history and technology of communications.
The volumes and documents can be consulted in the Digital Catalogues available on the Fundação's website, the Europeana website and also social networks, in particular Twitter and Flicker.