4GoodHosting filters incoming mail with enterprise anti-spam (StopSpam / SpamExperts) before messages reach your inbox.
To open the quarantine panel:
Log in to cPanel.
In the Email section, click the SpamExperts icon/app (also labeled StopSpam/SpamExperts) to open it, or visit login.stopspam.ca.
Use your domain name as the username.
If you see a certificate warning, open a support ticket. You can also consult the StopSpam instruction manual (PDF).
From the panel, you can view, release, whitelist, and blacklist messages.
Related articles: KB 379 and KB 2850.