fairfax / Availability tables / Exchange Online

Exchange Online in GCC, GCC High and DoD

Of the 90 features fairfax tracks, these are not available today: 3 in GCC, 8 in GCC High, 12 in DoD. Planned and in-development features count as not available until Microsoft ships them. Every row quotes Microsoft and links to the page it came from.

Exchange Online in GCC, GCC High and DoD

Feature and feature key	GCC	GCC High	DoD	Source
Exchange Online: Hybrid deployment supported `exchange/hybrid-deployment-supported`Microsoft: “Hybrid deployment supported \| Yes \| Yes \| Yes”For coexistence with Exchange Server on-premises, Microsoft requires installing at least one Exchange Server 2013 Client Access Server (or Exchange Server 2016.). Exchange Server 2010 and earlier aren't supported.	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: IMAP migration supported `exchange/imap-migration-supported`Microsoft: “IMAP migration supported \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Cutover migration supported `exchange/cutover-migration-supported`Microsoft: “Cutover migration supported \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Staged migration supported `exchange/staged-migration-supported`Microsoft: “Staged migration supported \| Yes \| Yes \| Yes”GSuite migration isn't supported for GCC High and DoD. For more information, see Perform a GSuite migration.	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Role-based permissions `exchange/role-based-permissions`Microsoft: “Role-based permissions \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Role groups `exchange/role-groups`Microsoft: “Role groups \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Role assignment policies `exchange/role-assignment-policies`Microsoft: “Role assignment policies \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Archiving Exchange Online-based mailboxes `exchange/archiving-exchange-online-based-mailboxes`Microsoft: “Archiving Exchange Online-based mailboxes \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Cloud-based archiving of on-premises mailboxes `exchange/cloud-based-archiving-of-on-premises-mailboxes`Microsoft: “Cloud-based archiving of on-premises mailboxes \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Messaging Records Management (MRM) `exchange/messaging-records-management-mrm`Microsoft: “Messaging Records Management (MRM) \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Manual retention policies, labels, and tags `exchange/manual-retention-policies-labels-and-tags`Microsoft: “Manual retention policies, labels, and tags \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Encryption of data at rest (BitLocker) `exchange/encryption-of-data-at-rest-bitlocker`Microsoft: “Encryption of data at rest (BitLocker) \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: IRM using Azure Information Protection `exchange/irm-using-azure-information-protection`Microsoft: “IRM using Azure Information Protection \| Yes \| Yes \| Yes”For more information regarding limitations of AIP in GCC High and DoD, see Azure Information Protection Premium Government Service Description. / / Azure Information Protection isn't included in G1/F3, but it can be purchased as a separate add-on and will enable the supported Information Rights Management (IRM) features. Some Azure Information Protection features require a subscription to Office 365 ProPlus, which isn't included with Office 365 Government G1 or Office 365 Government F3.	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: IRM using Windows Server AD RMS `exchange/irm-using-windows-server-ad-rms`Microsoft: “IRM using Windows Server AD RMS \| Yes \| Yes \| Yes”Windows Server AD RMS is an on-premises server that must be purchased and managed separately to enable the supported IRM features.	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Microsoft Purview Advanced Message Encryption `exchange/microsoft-purview-advanced-message-encryption`Microsoft: “Microsoft Purview Advanced Message Encryption \| Yes \| Yes \| Yes”See Message Encryption behavior across GCC High/DoD boundary in this article and in the article Compare versions of message encryption. Unique characteristics of Message Encryption in a GCC High deployment, which document behavioral nuances of Message Encryption when sending messages between GCC High/DoD and non-GCC High/DoD users.	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Microsoft Purview Customer Key `exchange/microsoft-purview-customer-key`Microsoft: “Microsoft Purview Customer Key \| Yes \| Yes \| Yes”Requires G5 service plan.	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: S/MIME `exchange/s-mime`Microsoft: “S/MIME \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: In-Place Hold and Litigation Hold `exchange/in-place-hold-and-litigation-hold`Microsoft: “In-Place Hold and Litigation Hold \| Yes \| Yes \| Yes”Requires G3 or G5 service plan.	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: In-Place eDiscovery `exchange/in-place-ediscovery`Microsoft: “In-Place eDiscovery \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Mail flow rules `exchange/mail-flow-rules`Microsoft: “Mail flow rules \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Microsoft Purview Data Loss Prevention `exchange/microsoft-purview-data-loss-prevention`Microsoft: “Microsoft Purview Data Loss Prevention \| Yes \| Yes \| Yes”Requires G3 or G5 service plan.	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Journaling `exchange/journaling`Microsoft: “Journaling \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Built-in anti-spam protection `exchange/built-in-anti-spam-protection`Microsoft: “Built-in anti-spam protection \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Customize anti-spam policies `exchange/customize-anti-spam-policies`Microsoft: “Customize anti-spam policies \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Built-in anti-malware protection `exchange/built-in-anti-malware-protection`Microsoft: “Built-in anti-malware protection \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Customize anti-malware policies `exchange/customize-anti-malware-policies`Microsoft: “Customize anti-malware policies \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Quarantine - administrator management `exchange/quarantine-administrator-management`Microsoft: “Quarantine - administrator management \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Quarantine - end-user self-management `exchange/quarantine-end-user-self-management`Microsoft: “Quarantine - end-user self-management \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Microsoft Defender for Office 365 `exchange/microsoft-defender-for-office-365`Microsoft: “Microsoft Defender for Office 365 \| Yes \| Yes \| Yes”Requires G5 Service plan (or purchase of add-on). / / Anti-phishing for user and domain impersonation and spoof intelligence aren't yet available in GCC High and DoD.	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Custom routing of outbound mail `exchange/custom-routing-of-outbound-mail`Microsoft: “Custom routing of outbound mail \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Secure messaging with a trusted partner `exchange/secure-messaging-with-a-trusted-partner`Microsoft: “Secure messaging with a trusted partner \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Conditional mail routing `exchange/conditional-mail-routing`Microsoft: “Conditional mail routing \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Adding a partner to an inbound safe list `exchange/adding-a-partner-to-an-inbound-safe-list`Microsoft: “Adding a partner to an inbound safe list \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Hybrid email routing `exchange/hybrid-email-routing`Microsoft: “Hybrid email routing \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Capacity alerts `exchange/capacity-alerts`Microsoft: “Capacity alerts \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Clutter `exchange/clutter`Microsoft: “Clutter \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: MailTips `exchange/mailtips`Microsoft: “MailTips \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Delegate access `exchange/delegate-access`Microsoft: “Delegate access \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Inbox rules `exchange/inbox-rules`Microsoft: “Inbox rules \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Connected accounts `exchange/connected-accounts`Microsoft: “Connected accounts \| Yes \| No \| No”This feature isn't supported in GCC High or DoD due to restrictions on outbound connections to third-party services. For more information about features impacted, see Connectivity with third-party services in this article.	Available	Not available	Not available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Inactive mailboxes `exchange/inactive-mailboxes`Microsoft: “Inactive mailboxes \| Yes \| Yes \| Yes”Requires G3 or G5 service plan.	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Offline address book `exchange/offline-address-book`Microsoft: “Offline address book \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Address book policies `exchange/address-book-policies`Microsoft: “Address book policies \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Hierarchical address book `exchange/hierarchical-address-book`Microsoft: “Hierarchical address book \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Address lists and global address list `exchange/address-lists-and-global-address-list`Microsoft: “Address lists and global address list \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Office 365 Groups `exchange/microsoft-365-groups`Microsoft: “Office 365 Groups \| Yes \| Yes \| Yes”Guest access to Office 365 groups isn't supported in GCC High and DoD environments. For more information, see Azure Government Security + Identity.	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Distribution Groups `exchange/distribution-groups`Microsoft: “Distribution Groups \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: External contacts (global) `exchange/external-contacts-global`Microsoft: “External contacts (global) \| Yes \| Yes \| Yes”Subject to org-relationship collaboration limitations in GCC High and DoD environments.	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Contact linking with social networks `exchange/contact-linking-with-social-networks`Microsoft: “Contact linking with social networks \| Yes \| No \| No”This feature isn't supported in GCC High or DoD.	Available	Not available	Not available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Resource mailboxes `exchange/resource-mailboxes`Microsoft: “Resource mailboxes \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Conference room management `exchange/conference-room-management`Microsoft: “Conference room management \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Out-of-office replies `exchange/out-of-office-replies`Microsoft: “Out-of-office replies \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Internet Calendar sharing `exchange/internet-calendar-sharing`Microsoft: “Internet Calendar sharing \| Yes \| No \| No”In GCC High, Internet Calendar publishing/sharing works for inbound connection to calendars shared by GCC High users, but not for GCC High users connecting outbound to a shared calendar outside of GCC High. / / In DoD–Internet Calendar sharing isn't supported due to the requirement for inbound/outbound connection allow listing in that environment.	Available	Not available	Not available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Microsoft 365 Admin Center Activity Reports `exchange/microsoft-365-admin-center-activity-reports`Microsoft: “Microsoft 365 Admin Center Activity Reports \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Microsoft Graph Reports (GA release) `exchange/microsoft-graph-reports-ga-release`Microsoft: “Microsoft Graph Reports (GA release) \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Message trace `exchange/message-trace`Microsoft: “Message trace \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Auditing reports `exchange/auditing-reports`Microsoft: “Auditing reports \| Yes \| Yes \| No”Refer to the platform features section of the Office 365 US Government service description for updates/current availability.	Available	Available	Not available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Unified Messaging reports `exchange/unified-messaging-reports`Microsoft: “Unified Messaging reports \| Yes \| No \| No”	Available	Not available	Not available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Federated sharing (including calendar publishing) `exchange/federated-sharing-including-calendar-publishing`Microsoft: “Federated sharing (including calendar publishing) \| Yes \| Yes \| Yes”Limitations exist in both GCC High and DoD. See Free/Busy federation in this article.	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Site mailboxes `exchange/site-mailboxes`Microsoft: “Site mailboxes \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Public folders `exchange/public-folders`Microsoft: “Public folders \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: To Do on the Web `exchange/to-do-on-the-web`Microsoft: “To Do on the Web \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Outlook for Windows `exchange/outlook-for-windows`Microsoft: “Outlook for Windows \| Yes \| Yes \| Yes”To meet GCC High and DoD compliance requirements, you must be running at least version 1803 of Office 365 ProPlus. Office 365 ProPlus isn't included with G1 or F3.	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Outlook on the web `exchange/outlook-on-the-web`Microsoft: “Outlook on the web1 \| Yes \| Yes \| Yes”Desktop Email Notifications are not supported for GCC. Outlook on the Web can be used in scenarios when Outlook for Windows is unable to display the IRM protected messages due to cross-boundaries restrictions (GCC High / Non-GCC High scenarios).	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Outlook for Mac `exchange/outlook-for-mac`Microsoft: “Outlook for Mac \| Yes \| Yes \| Yes”To meet GCC High and DoD compliance requirements, you must be running at least version 1803 of Office 365 ProPlus. Office 365 ProPlus isn't included with G1 or F3.	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Outlook for iOS and Android `exchange/outlook-for-ios-and-android`Microsoft: “Outlook for iOS and Android \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Exchange ActiveSync `exchange/exchange-activesync`Microsoft: “Exchange ActiveSync \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Basic Mobility and Security for Microsoft 365 `exchange/basic-mobility-and-security-for-microsoft-365`Microsoft: “Basic Mobility and Security for Microsoft 365 \| Yes \| No \| No”	Available	Not available	Not available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: POP and IMAP `exchange/pop-and-imap`Microsoft: “POP and IMAP \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: SMTP `exchange/smtp`Microsoft: “SMTP \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: EWS application support `exchange/ews-application-support`Microsoft: “EWS application support2 \| Yes \| Yes \| Yes”Only egress to specific address spaces the customer can prove they own are allowed, so this precludes third-party services and broad IP ranges used by mobile devices.	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Voice mail `exchange/voice-mail`Microsoft: “Voice mail \| No \| No \| No”Integration of on-premises IP-PBX systems with Exchange Online Unified Messaging isn't supported.	Not available	Not available	Not available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Integration between voice mail and third-party FAX `exchange/integration-between-voice-mail-and-third-party-fax`Microsoft: “Integration between voice mail and third-party FAX \| No \| No \| No”Integration of on-premises IP-PBX systems with Exchange Online Unified Messaging isn't supported.	Not available	Not available	Not available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Third-party voice mail interoperability `exchange/third-party-voice-mail-interoperability`Microsoft: “Third-party voice mail interoperability \| No \| No \| No”Integration of on-premises IP-PBX systems with Exchange Online Unified Messaging isn't supported.	Not available	Not available	Not available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Skype for Business integration `exchange/skype-for-business-integration`Microsoft: “Skype for Business integration \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Mailbox replication at datacenters `exchange/mailbox-replication-at-datacenters`Microsoft: “Mailbox replication at datacenters \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Deleted mailbox recovery `exchange/deleted-mailbox-recovery`Microsoft: “Deleted mailbox recovery \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Deleted item recovery `exchange/deleted-item-recovery`Microsoft: “Deleted item recovery \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Single item recovery `exchange/single-item-recovery`Microsoft: “Single item recovery \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Presence in OWA and Outlook `exchange/presence-in-owa-and-outlook`Microsoft: “Presence in OWA and Outlook \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: SharePoint interoperability `exchange/sharepoint-interoperability`Microsoft: “SharePoint interoperability \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: EWS connectivity support `exchange/ews-connectivity-support`Microsoft: “EWS connectivity support \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: SMTP relay support `exchange/smtp-relay-support`Microsoft: “SMTP relay support \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Microsoft Office 365 portal access `exchange/microsoft-office-365-portal-access`Microsoft: “Microsoft Office 365 portal access \| Yes \| Yes \| No”Refer to the platform features section of the Office 365 US Government service description for updates/current availability.	Available	Available	Not available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Microsoft 365 admin center access `exchange/microsoft-365-admin-center-access`Microsoft: “Microsoft 365 admin center access \| Yes \| Yes \| No”Refer to the platform features section of the Office 365 US Government service description for updates/current availability.	Available	Available	Not available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Exchange admin center access `exchange/exchange-admin-center-access`Microsoft: “Exchange admin center access \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Remote Windows PowerShell access `exchange/remote-windows-powershell-access`Microsoft: “Remote Windows PowerShell access \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: ActiveSync policies for mobile devices `exchange/activesync-policies-for-mobile-devices`Microsoft: “ActiveSync policies for mobile devices \| Yes \| Yes \| Yes”	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Usage reporting `exchange/usage-reporting`Microsoft: “Usage reporting \| Yes \| Yes \| No”Refer to the platform features section of the Office 365 US Government service description for updates/current availability.	Available	Available	Not available	Microsoft Learn updated 2025-12-02 checked 2026-10-12
Exchange Online: Outlook add-ins and Outlook MAPI `exchange/outlook-add-ins-and-outlook-mapi`Microsoft: “Outlook add-ins and Outlook MAPI \| Yes \| Yes \| Yes”Only some OWA and Outlook add-ins are available in GCC High and DoD. See Add-ins in Outlook and Outlook Web App in this article.	Available	Available	Available	Microsoft Learn updated 2025-12-02 checked 2026-10-12

How to read these tables

GA and Available: Microsoft lists it as available.
Preview, Private preview, Limited, Rolling out: available with conditions, or on its way.
Not available, No plans, Planned, In development, On engineering backlog: you can't use it there today. These are Microsoft's own words. A planned date that has passed is marked, so you re-check it.
Not possible: Microsoft says that pairing of clouds can't work.
not listed: Microsoft's page doesn't give a status for that cloud.

A feature missing from this page tells you nothing about whether it works. fairfax only knows what is in its dataset.

Check your own plan

pip install fairfax
fairfax facts --grep exchange
fairfax check plan.yaml       # tenant, azure and the feature keys you plan to use

The feature keys in the tables above go straight into a plan file. See the plan format.

Sources

Exchange Online for US government environments: page updated 2025-12-02, checked 2026-10-12, 90 entries