Send large volumes of internal system emails without mailbox limits or service disruption: effective March 31, 2026, High Volume Email in Exchange Online becomes generally available, with usage billing starting on June 1, 2026. Summary High Volume Email is now generally available in
Control where inbound email enters Exchange Online for globally distributed users: effective December 2025, Microsoft made Multi‑Geo In‑Region Routing generally available for Exchange Online, extending the operational scope of Microsoft 365 Multi‑Geo Capabilities. Summary Inbound anonymous and hybrid email can enter Exchange Online
Microsoft 365 Backup improves: Effective March 2, 2026, departmental billing is available in Microsoft 365 Backup. Also, file-level restore is available since April 29, 2026. Summary Departmental billing is now available for Microsoft 365 Backup to align costs by department, region, or business
Avoid disruptions in mailbox access: Microsoft is retiring Exchange Web Services (EWS) in Exchange Online. EWS is the old Exchange API that many applications use to access email, calendar, contacts, and mailbox data. As part of this process, starting July 1, 2026, Microsoft will
Effective November 15, 2025, Exchange Online begins public preview of a new auto-archiving feature that automatically moves the oldest emails to an archive once a mailbox reaches 96% of its storage quota. This proactive cleanup works alongside existing time-based archiving to prevent mailboxes from
Effective June 2025, Microsoft has introduced Azure Communication Services (ACS), a powerful solution for sending large volumes of communications, like emails. This is especially relevant for organizations facing limitations with traditional email platforms like Exchange Online. This article explains ACS and its licensing, compares
Microsoft enabled support for concurrent Microsoft Exchange Online license assignments as a new feature in Office 365, which allows tenant admins to assign more than one Exchange Online license per Azure Active Directory (AAD) user. For more information on this feature, please visit: https://techcommunity.microsoft.com/t5/exchange-team-blog/introducing-support-for-concurrent-exchange-online-license/ba-p/3721098.
Effective November 1, 2022, Cross-Tenant User Data Migration for Microsoft Exchange Online and OneDrive is available for Enterprise Agreement (EA) or Enterprise Subscription Agreement (EAS) customers. It supports complex organizations with tenant-to-tenant migration requirements. Admins can move Exchange Online and OneDrive user data between