I have a site I’m launching soon with a decent amount of SEO strength coming from PDFs hosted on the old site. I’m setting up redirects for these, but we’ll still lose all SEO strength on them because they’re hosted on webflow.com servers. An easy fix is to setup a subdomain and host our PDFs there, however I would prefer to manage this within Webflow on our primary domain. Is this possible?
This is not possible. Export your site and host on your own domain.
status-bydesign
Just checking if this is still the case?
Export and hosting your own domain does not work with CMS capabilities as far as I know? Have a client who needs CMS capability and also whitelist domain for security reasons, including linking to images on domain for email signature.
Correct. This is still the case 
Checking in again – still the case? Is there any recommended work around?