Hello @KHady ,   You don't need to necessarily manage unsubscribed contacts, if they unsubscribe from you through the unsubscribe link, you won't be able to email them through our system. You can also export unsubscribes from your account in a file format. For a full overview of how unsubscribes work, I'd recommend going through our main article on the topic.   Additionally, you can view unsubscribes for a Subject AB test by selecting one of the reporting links for a particular subject line you sent, then switching the drilldown list to the unsubscribed - the same as if you were looking at a drilldown for a regular email. For a full overview of Subject AB email reporting, I'd recommend taking a look at this article. ... View more