Cancel Emails Windows can be accessed by clicking the icon in the Tools Bar.
There are two ways to handle those "Cancel Emails".
(1) Process the POP3 unsubscribe request. It will retrieve the emails address, according to the "Un-subscribe Settings", and remove it from the email list. A option is provided to choose whether remove the email record in the database at the same time.
(2) Maintain the "Unsubscribe" list. You can input the email address and specify the action on it, "Resubscribe from the cancel list", "Never send email to the address". An option is provided to choose whether remove the email record in the database at the same time.