Trigger Guest Welcome message when the door code is used for the first time.

I saw this request in an old post, but through the use of the Schlage app? Is there any update on this?

As an alternative, I'm willing to bet this could be done with a little creativity using triggers and zapier. Has anyone tried something similar? 

I haven't gone very deep into OR's capabilities yet, so I'm not sure if this would be currently possible.