2 100 писем и ноль ответов: разбор холодной рассылки в банки и фонды
За две недели мы отправили около 2 100 приглашений в отраслевой опрос: специалистам по рискам в банках и инвестиционных фондах. Базу собрали сами. О…
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Gmail bounced everything the relay sent: three broken auth mechanisms and a silent OpenDKIM
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