Spam Quarantine: Release Quarantined Messages from a Shared Mailbox

Overview

Users who have been granted access to shared mailboxes will now be able to triage quarantine contents of those shared mailboxes through the quarantine notification and directly from the quarantine portal.

Instructions

1. Access your Spam Quarantine by going to https://security.microsoft.com/quarantine?viewid=Email. 
2. Click the default filter for Time Received or click the Filter icon (it looks like a funnel). 
3. Enter the Shared Mailbox email address in the recipient address filter. Users with access to shared mailboxes can use the filter to look up quarantine items for the shared mailboxes. Note that it may take several seconds to load.