CTT Correios de Portugal
CTT - Correios de Portugal, S.A. is Portugal's national postal service and operates as a commercial group with subsidiaries in banking, e-commerce, and other postal services. It's been around since 1520 during the Portuguese Renaissance, making it the oldest operating company in Portugal. The name CTT comes from the former name of the company, "Correios, Telegrafos e Telefones," which means "Post, Telegraph, and Telephone" in Portuguese. This name was also used for the postal service in the former Portuguese colonies and is still used for CTT - Post in Macau today.