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If the recipient is using one of the other supported email clients such as Gmail, Yahoo! or, they will receive a wrapper email (aka “envelope”), which will direct them to the Office 365 Message Encryption Portal (OME Portal), where they will be asked to authenticate. The message will open as usual but will contain information that it has been encrypted (the same applies to email attachments). If the recipient is signed-in to their Microsoft 365 or on-premises Exchange account and is using one of Microsoft’s email clients, they do not need to take any additional actions. When the encrypted message reaches its intended recipient, they will be asked to authenticate to open the message contents. In this scenario, a message is encrypted as it is sent (before it leaves your Microsoft 365 organization) and the sender does not have to do anything. It has a number of features and configuration options, but here I will focus on how to automatically encrypt emails sent outside your organization by members of a specific group (the Legal Team). Office 365 Message Encryption is a service that is integrated with Microsoft’s email clients (Outlook desktop, Outlook for Mac, Outlook mobile on iOS and Android, and Outlook on the web). Read on to learn how to create a Microsoft 365 sensitivity label and use it in a transport rule to encrypt emails and files. From the recipient’s perspective, this form of email encryption works seamlessly with Microsoft 365 accounts and offers an intuitive experience for all other email clients and email service providers. From the user’s perspective, it is the easiest to use: it can be configured so that it does not require any additional actions on their part. If you are looking for a user-friendly email encryption solution for your Microsoft 365 organization, there is a native tool for that – Office 365 Message Encryption. It’s been updated to due to recent changes in the Exchange admin center and migration of some options from Microsoft 365 compliance to Microsoft Purview.Įmail encryption provides additional layer of information security by making sure only intended recipients can read messages. : This article was first published on May 11, 2021.