Hi @rhelfst, thanks for reaching out! I think that what you’re looking for is possible today, as part of the existing “Button” modules for the drag and drop email editor under the “Link to” dropdown you’ll find an option for “CTA” which will let you pick form your existing CTAs in HubSpot.
From within the drag and drop pages editor, you should get the standard “Call-to-Action” module that you can drag and drop on.
Let me know if I’ve misunderstood at all. Thanks!