T Nagar Head Post Office (HPO) is one of the major post offices in Chennai District. This fully computerized HPO provides various types of mail services such as express parcel post, money-order, e-post, e-billing and registered post. International and domestic speed post facilities are available at T Nagar Head Post Office. It also functions from 16:00 to 20:00 hrs, in addition to the day time working hours. Money exchanging facilities and distribution of mutual funds and bonds are facilitated at the head post office. A philatelic bureau also functions at T Nagar Head Post Office.