To view and release messages from user quarantine folders, navigate to Quarantine > Messages. You may search for specific messages using the search options at the top, or you may choose to browse through different folders using the either the drop-down list under the Messages heading or by navigating to Quarantine > Folders.
To view the message or its headers, click on the envelope to the left of the message in the list. You can then choose your view from the drop-down list (highlighted).
To release the message from the quarantine folder, select the messages by their checkboxes on the left, hover over Release, and choose Release With Virus Scan.