This is possible!
The Email Receive activity will make the process wait until the expected email is received.
You can filter emails based on the EmailFromAddress and Subject. In order to correlate your offline callback, you can add the process id to the subject line when sending email to email participant. The participant then should reply to the same email without changing its subjects line (or at least leaving the process id undeleted)
I'll try today with the Email Receive Activity.
I'm trying ... but the task (receive) don't wait for the Email.
I configured only the: From Filter and the Connections Setting.
But the process continues before that I reply the email.
Can you help me configure the params?
Thanks a lot