Sending Batch Email and Associate Actions/Triggers

I have a simple requirement. We are participating in an "Event", the event organizers have sent us a list of people who have registered for the event.

I want to send an email to the entire list and perform two actions: ( My Goals )

1) In case someone opens the email, I want them to be added to list "X".

2) In case someone clicks on the register now button, I want them to added to list "Y".

My implementation approach is as follows:

1)  Created a program of type "Event" and channel is "Tradeshow"

2)  Created a list of people whom i want to send the email, by importing data from CSV.

3)  Created the email content.

4)  Created a smart campaign.

5)  In Smart Campaign under the Smart List I created a filter as "Member of List" and  selected the list name I created in step 2 above.

6)  This is where the confusion starts, from this point onwards I'm not sure how do I add Trigger or Flow such that I achieve my two goals as mentioned above.

Suggestions/help would be useful.