Creating a ribbon xml file for Outlook context sensitive menu

Is there a working stub for creating a way to load an xml file on outlook start? want to customize the ribbon (but only the right click menu in outlook proper). have the name and it is 'ContextMenuMailItem'. so, my xml would look like this:

<customUI xmlns="https://schemas.microsoft.com/office/2009/07/customui">
<contextMenus>
<contextMenu idMso="ContextMenuMailItem">
<button idMso="Forward" visible="true" label="Forward All" onAction="ForwardAll"/>
</contextMenu>
</contextMenus>
</customUI>

if this is correct, then how do I load it on startup?

For the mod,

Can you move this to the VBA section of Outlook. Put it in the wrong place.

Thanks