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Cognomen จดหมาย (Letter , จดหมาย , Mailiwan) , all over the world, is quite a rare family name. The last name จดหมาย is habitual in Western Europe, particularly Switzerland, where it is quite a rare surname, Belgium, and Netherlands. In absolute terms, it is the most numerous in the United States, Myanmar, and Switzerland. Much less frequently, จดหมาย is the forename as well as the last name.