WhatsApp has just confirmed its newest record—on December 31, the service saw a record 18 billion messages being processed. The total number of messages comprised 7 billion inbound messages and 11 billion outbound messages. In a tweet on its official handle some time ago, WhatsApp stated, "On Dec 31st we had a new record day: 7B msgs inbound, 11B msgs outbound = 18 billion total messages processed in one day! Happy 2013!!!"
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