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<p>因?yàn)?JavaMail API 將供應(yīng)商和所有其它的東西分開了，您就能輕松添加額外的協(xié)議支持。Sun 保留了一張<a href="http://java.sun.com/products/javamail/Third_Party.html">第三方供應(yīng)商</a>列表，他們利用了 Sun 不提供超出（out-of-the-box）支持范圍的協(xié)議。您會(huì)找到 NNTP（網(wǎng)絡(luò)新聞傳輸協(xié)議）[新聞組]、S/MIME（安全多用途因特網(wǎng)郵件擴(kuò)展）及其它支持。</p>
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