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Simple Mail Transfer Protocol

Internet protocol used for relaying e-mails

en-US/ˈsɪmpəl ˈmeɪl ˈtɹænsfɚ ˈpɹoʊtəˌkɑl/
en-GB/ˈsɪmpl ˈmeɪl tɹænsˈfɜːɹ ˈpɹəʊtəˌkɒl/

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