{{Dabprimary}} Many countries have had dedicated railway services for the delivery of postal mail.
Examples include:
* In Australia, the Travelling post office, Queensland
* In Austria, the {{Interlanguage link multi|Bahnpost (Austria)|de|3=Bahnpost (Österreich)}} (1850–2004) * In France, the {{lang|fr|SNCF TGV La Poste}} (1984–2015) were rail cars built specifically for ''{{lang|fr|La Poste}}'', which had run rail services since 1846 * In Germany, as well as the {{Interlanguage link multi|Bahnpost (Germany)|de|3=Bahnpost (Deutschland)}} (from 1840s), several cities have their own mail trains, including: ** {{Interlanguage link multi|Poststraßenbahn Berlin|de}} in Berlin ** {{Interlanguage link multi|Post-U-Bahn München|de}} in Munich * In Switzerland, the {{Interlanguage link multi|Bahnpost (Switzerland)|de|3=Bahnpost (Schweiz)}} has run since 1847 * In the United Kingdom, the Travelling Post Office (1830–2004) was a service where post was sorted en route ** The London Post Office Railway (1927–2003) operated in dedicated tunnels under London * In the United States, the Railway Mail Service (1862–1978) of the United States Postal Service carried the vast majority of mail from the 1890s until the 1960s ** The Railway Mail Service used railway post offices within passenger services to sort post en route ** The use of the Chicago Tunnel Company for mail freight inspired the London Post Office Railway
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