The email hybrid service provides an extra layer of email analysis, stopping spam, virus, phishing, and other malware attacks before they reach the network and considerably reducing email bandwidth and storage requirements. You can also use the email hybrid service to encrypt outbound email before delivery to its recipient (your subscription must also include the Email Encryption Module for this feature). You can create policies for on-premises and hybrid analysis in the same user interface—the Email module—and configuration, reporting, and management are centralized.
Google & Microsoft
It takes lot of moving parts simple on yours here’s how it works your disappear that your.