How works the History page in the Lists app
The History page of the Lists app contains the list with all sent emails. It shows the lists ordered by time and you can see by clicking on each list how the emails were sent.
When you will click on a list, you will see the total number of sent emails, success sent and failed emails. Also, you will see the list with emails divided in success and failed sent emails.
If an email wasn't sent, under the email address you will see the reason.
If the sent fails, the email will be disabled.