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<dd><code><a href="../../javax/mail/MessagingException.html" title="class in javax.mail">MessagingException</a></code> - for other failures</dd>
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<h4>writeTo</h4>
<pre>public abstract&nbsp;void&nbsp;writeTo(<a href="http://docs.oracle.com/javase/8/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</a>&nbsp;os)
                 