Disinfected mail or fumigated mail is
mail that has had some form of
disinfection or
fumigation applied to it by postal authorities, with the intention of preventing the spread of
epidemics via letters sent from infected areas.The usual practice was to puncture the envelope with small holes, often in a grid pattern, or to snip off one or more corners, in order to let the fumigation gases in. In addition, a special
postal marking may note the disinfection process.The process did not necessarily have a scientific basis; the practice dates from before an understanding of the cause of contagious diseases, and the fumigant was as likely to be based on folklore. For instance, in the
Middle Ages Mediterranean ports such as
Venice would smoke received covers or douse them with
vinegar.
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Mail that has been fumigated so that the letter will not be a carrier of disease.
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