Since the launch of the Campaign Builder back in April 2012 it has long been an issue that you cannot find out the specific open rates or bounce rates on your campaign emails. However in the recent Winter 2013 release this issue has now been resolved.
In order to access these stats you simply go to your master navigation
under Marketing click on Reports
if a results screen appears press start over button. once at the search screen select the user called “system” and press search button.
In the results you will see a list of emails that have been sent by the system. The column called “Name” shows the emails Title which is the name you give the the email communications snippets in your campaign sequence. The “Subject” column shows the subject of your email as set in the subject field of the email you built in campaign builder. Once you find an email with the exact name and subject that matches that set in your campaign click the view link for that broadcast.
You will now see the email broadcast report.
from this report I can see a nice graph showing how many opened vs how many didn't open, i can see how many people were skipped, how many people bounced, how many people clicked on a link and how many people opted out. This will now help you carry out a more in depth analysis on how effective your campaigns are so you can make any required adjustments to them.