Best way to automate the creation of PS-Mockups

I have designed several template pages in Indesign for sales purposes. Whilst most of the design stays the same, some elements (like logo and name) get individualized for each client.

Afterwards I export my pages as jpg-files and use them within a Photoshop-Mockup:
– Select the smart object
– replace content with chosen image
– export as jpg again

Now I am wondering if there is a more simple way to generate these mockup-exports in a more automated way. Anybody got experience with that?

Answer

Attribution
Source : Link , Question Author : Daiaiai , Answer Author : Community