Check if any email received in the last 10 days

Good afternoon,

I'm trying to create the following rule, but have hard time finding out the right way via BPM : 

When status of ticket is changed to = "Pending answer", wait 10days, if no email from client then close the ticket.

In the BPM i thought about something like : 
- Starting condition = status "Pending answer" ---> Timer 10days ---> Look if there is a new inbound email ---> Close if yes.

The issue I'm having is the "Look if there is a new inbound email"

Any thoughts ?