Users can already easily block emails from any unwanted Senders, but there is a use case where a user wouldn't want to see an irrelevant Sender in their dashboard or regular lockrBox emails. With the Sender blacklist feature, we will be creating a separate area of the dashboard where users can effectively remove Senders from their dashboard and lockrBox email. This will be dynamic so the Sender can always be removed from the blacklist and added back into the fold.