ELTA is the official name of the postal service and their colours are blue and yellow. The main postal offices on Santorini are in Fira, Emporio and Oia. Postal agencies are in Pyrgos, Kamari and Perissa. Mailboxes are available in all the villages of Santorini. A standard letter or postcard less than 20 grams sent anywhere in Europe or abroad costs €0.65 (as per April 2007). Courier services are also available. 