Manage recipients in standalone EOP

Important

The improved Microsoft 365 security center is now available in public preview. This new experience brings Defender for Endpoint, Defender for Office 365, Microsoft 365 Defender, and more into the Microsoft 365 security center. Learn what's new. This topic might apply to both Microsoft Defender for Office 365 and Microsoft 365 Defender. Refer to the Applies To section and look for specific call-outs in this article where there might be differences.

Applies to

Standalone Exchange Online Protection (EOP) organizations without Exchange Online mailboxes support the following types of recipients:

  • Mail users: Mail users are the fundamental type of user accounts in your standalone EOP organization. Mail users have logon credentials in your EOP organization, but they have external email addresses (their mailboxes are located outside of your EOP organization).

    For more information about managing mail users in EOP, see Manage mail users in EOP.

  • Groups: You can create the following types of groups:

    • Distribution groups
    • Mail-enabled security groups

    For more information about managing groups in EOP, see Manage groups in EOP.