Email Campaign Feedback - Analysis of sent/received/clicked campaigns

Hello everybody. Thanks in advance to anyone who can help me.

I have a website made for an important client:
www.upoop.pt

They use email campaigns to release information to their partners and associates. Some campaigns are not even received by some emails. It is possible to analyze the data in the graphs released after the campaign is sent.

How can we analyze what these addresses are in specific? My clients are interested in finding out from partners and associates whether they have the wrong e-mails and update their addresses so they don't miss campaigns.

Thank you