repo_zf1/documentation/manual/en/module_specs/Zend_Mail-AdditionalHeaders.xml

<?xml version="1.0" encoding="UTF-8"?>
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<sect1 id="zend.mail.additional-headers">
    <title>Additional Headers</title>

    <para>
        <classname>Zend_Mail</classname> provides several methods to set additional Mail Headers:

        <itemizedlist>
            <listitem>
                <para>
                    <methodname>setReplyTo($email, $name=null)</methodname>: sets the Reply-To:
                    header.
                </para>
            </listitem>

            <listitem>
                <para>
                    <methodname>setDate($date = null)</methodname>: sets the Date: header.
                    This method uses current time stamp by default. Or You can pass time stamp,
                    date string or <classname>Zend_Date</classname> instance to this method.
                </para>
            </listitem>

            <listitem>
                <para>
                    <methodname>setMessageId($id = true)</methodname>: sets the Message-Id: header.
                    This method can generate message ID automatically by default. Or You can pass
                    your message ID string to this method.
                    This method call <methodname>createMessageId()</methodname> internally.
                </para>
            </listitem>
        </itemizedlist>
    </para>

    <note>
        <title>Return-Path</title>

        <para>
            If you set Return-Path on your mail, see <link linkend="zend.mail.introduction.sendmail"
                >Configuring sendmail transport</link>.
            Unfortunately, <methodname>setReturnPath($email)</methodname> method does not perform
            this purpose.
        </para>
    </note>

    <para>
        Furthermore, arbitrary mail headers can be set by using the
        <methodname>addHeader()</methodname> method. It requires two parameters containing the name
        and the value of the header field. A third optional parameter determines if the header
        should have only one or multiple values:
    </para>

    <example id="zend.mail.additional-headers.example-1">
        <title>Adding E-Mail Message Headers</title>

        <programlisting language="php"><![CDATA[
$mail = new Zend_Mail();
$mail->addHeader('X-MailGenerator', 'MyCoolApplication');
$mail->addHeader('X-greetingsTo', 'Mom', true); // multiple values
$mail->addHeader('X-greetingsTo', 'Dad', true);
]]></programlisting>
    </example>
</sect1>
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