On October 10, 2017, the Portuguese Post issued a set of 6 stamps and a souvenir sheet in honour of the 500th anniversary of the Postal Service of the country.
In honour of World Post Day, the Turkish postal administration issued a series of 4 stamps and the souvenir sheet on October 9, 2017. Postmen and horse mail cart are depicted on the stamp of 1.80 lira.
October 6, 2017. The Australian Post issued a series of 5 stamps and a miniature sheet dedicated to the 100th anniversary of the First World War and the place and role of woman in military conflicts.