Create an email with custom HTML code that renders buttons in Outlook

Hello!

I am creating my own custom code email in CC. I typically use vml to prevent Outlook from blowing up the buttons:

<!--[if gte mso 9]><xml>
<o:OfficeDocumentSettings>
<o:AllowPNG/>
<o:PixelsPerInch>96</o:PixelsPerInch>
</o:OfficeDocumentSettings>
</xml><![endif]-->

However, this is stripped out of the code by CC.

How have you solved this issue so that your email buttons render correctly in Outlook?

Thank you,

Melinda