When did Western Union, the world’s largest telegraph company, allowed its customers to send a single message to multiple recipients which was considered annoying., 1860, 1760, 1960, 1680, According to the text What was the first documented spam message in history!, Times of London sent unsollicited telegrams to dentist, In May 1860, Dentist received telegrams from politicians, British politicians wrote angry letters to the Times of London, complaining that they’d received unsolicited telegrams from a local dentist., The first email spam was sent on May 3, 1978 by Whom?, Gary Thuerk,, APRANET, Scientists working at universities

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