All written communications (incoming correspondence) addressed to UNESCO by Member States and Associate Members, international intergovernmental organizations (IGOs), non-governmental organizations (NGOs) and the international intellectual community as a whole are considered to be official correspondence.
The handling of official incoming correspondence is composed of two phases – registration of the letter, and its attribution to the unit within the Secretariat that will be charged with preparing a response, if required. The following links provide a description of each of these phases: