mj-raw-conditional-comment.mjml

<mjml>
    <mj-head>
    </mj-head>
    <mj-body>
        <mj-section>
            <mj-raw>
                <!--[if mso]>--><div>mso</div><!--<![endif]-->
                <span>general</span>
                <!--[if mso]><div><![endif]-->
                <span>general two</span>
                <!--[if mso]></div><![endif]-->
            </mj-raw>
            <mj-raw>
                <img src="bananas" alt=""/>
            </mj-raw>
        </mj-section>
        <mj-section>
            <mj-column>
                <mj-text>After</mj-text>
            </mj-column>
        </mj-section>
    </mj-body>
</mjml>