A: Hi!

Great question and thank you for asking.

Yes, if a user uploads their own mockup that contains a Smart Object (like a PSD), our system can technically place a design onto that product.

So while our default mockup library is strongest for apparel and POD use-cases, you can upload any product mockup - e.g. jewelry, cosmetics, packaging, billboards, etc.
As long as the file contains a Smart Object, the design can be applied automatically.

Examples:

Jewelry → engraved text or small artwork
Cosmetics → logo or branding applied on a product box or tube
Packaging → custom labels

Even tattoos on skin mockups :)

There is essentially no category limitation if the uploaded file supports Smart Objects.

Hope this answers the question!
Aleksa, DM team