What is "Spam Quarantine Summary"

If you use an iMail email account, occasionally you may receive an email that looks like this:

From: "Barracuda Spam Firewall" >
Date: October 15, 2018 at 9:00:08 AM EDT
To: [email protected]
Subject: Spam Quarantine Summary - (1)


This is a legitimate email that comes from our Barracuda Spam Firewall. You can read through the list of emails that the system flagged and follow the instructions to either Whitelist or delete. By taking these actions, you help the Spam Firewall better identify malicious and safe emails.