With Office 365 Message Encryption, an organization can send and receive encrypted email messages between people inside and outside its organization.
We have this functionality for a while in Office 365. This is also called Office 365 Message Encryption version 1 (OMEv1).
In the last fall we received a new version of Office 365 Message Encryption, version 2 (OMEv2) which is based on Azure Information Protection (AIP) and allows organization not only to encrypt but also to protect emails & documents on the entire life of them. OMEv2 also adds the capability to work with partners and external recipients.
Link for the script: https://gallery.technet.microsoft.com...