From: Mailbox Customer service <email@example.com>
Date: Mon, May 7, 2018 at 8:27 PM
Subject: Final Warning !!!
Virus activities have been detected in your email account today.
CLICK HERE... to run a quick scan and delete all virus/malware.
Note: If you ignore this warning, we will shutdown your email account to protect our Mail-Server from further attack.
Source: Email Security Team