Bounced emails. Bounced List. Undelivered emails. Bad email addresses. Clean up my email list.
You find your bounced emails list under in the last campaign you ran.
Find that campaign under Campaigns --> View Archives
Then, on your most recent campaign, click the Run Details arrow:
If you have any bounced email addresses (you may not), you will see a link allowing you to download a file with those addresses. If the download does not begin after clicking the link you may need to disable your pop-up blocker.