Microsoft 365 Message Center ArchiveM365 Archive

Exchange Online

Message Center and Roadmap announcements for this Microsoft 365 service.

MessageActions
MC1319208
Microsoft Outlook: External email tag now supported in Inbox Rules
May 22, 2026|Exchange Online
MC1310680
New Outlook for Windows: LDAP support for S/MIME certificate lookup
May 14, 2026|Exchange Online
MC1302908
Outlook: Support for storing S/MIME certificates in contacts in new Outlook
May 6, 2026|Exchange Online
MC1243552
High Volume Email for Microsoft 365 now generally available
Mar 4, 2026|Exchange Online
MC1304290Major
2026 Microsoft 365 Packaging Update
May 8, 2026|Exchange Online
MC1315220Major
Outlook on the web: New setting to use data classification services for DLP evaluation
May 18, 2026|Exchange Online
MC1309747
Planner is now available in Outlook and Microsoft 365 Copilot
May 13, 2026|Exchange Online
MC1261593
Outlook: Improved handling of disallowed and failed email reactions
Mar 25, 2026|Exchange Online
MC1248393
Outlook Mobile: Follow a meeting option
Mar 10, 2026|Exchange Online
MC1247891
Outlook: Support for recommended and automatically applied sensitivity labels in Outlook for iOS and Android
Mar 9, 2026|Exchange Online
MC1304287
Microsoft Exchange Online: Upcoming secure-by-default changes for Exchange APIs
May 8, 2026|Exchange Online
MC1303717
Default compose font: Administrators can allow users to change the default font in Outlook for iOS and Android
May 7, 2026|Exchange Online
MC1129718
New Feature: Account Manager in Outlook for Windows
Aug 5, 2025|Exchange Online
MC1239176
Outlook: Delimiter setting admin policy
Feb 26, 2026|Exchange Online
MC1301802
Change Optics report for Exchange Online begins public preview
May 5, 2026|Exchange Online
MC1245222
Outlook: Share Word, Excel and PowerPoint local files via the new Outlook for Windows
Mar 5, 2026|Exchange Online
MC1294524
Microsoft Exchange Online: Dynamic distribution groups will populate membership faster on creation and modification
Apr 28, 2026|Exchange Online
MC1269211
Clearer RSVP selection in Outlook Mobile
Apr 3, 2026|Exchange Online
MC1293480MajorAction by Jun 29, 2026
Exchange Online: Retirement of legacy TLS versions for POP and IMAP connections
Apr 27, 2026|Exchange Online
MC1267871
Outlook for Android: Unified user interface in text, image and zip previewers
Apr 1, 2026|Exchange Online
MC1272554MajorAction by Jul 5, 2026
Top domain mail flow report in Exchange Online is retiring
Apr 6, 2026|Exchange Online
MC1272552
Workweek view for Outlook on iOS and iPad
Apr 6, 2026|Exchange Online
MC1269216
Outlook for Android and iOS: Support for shareable links beautification and permissions in meeting description
Apr 3, 2026|Exchange Online
MC1269213
New meeting response option: decline and propose a new time in Outlook Mobile
Apr 3, 2026|Exchange Online
MC1269212
New option to keep or delete meeting invitations after responding
Apr 3, 2026|Exchange Online
MC1267870
Outlook for iOS: New attachment actions and updates to previewer experience
Apr 1, 2026|Exchange Online
MC1248389Major
Retirement of -Credential parameter when connecting to Exchange Online PowerShell
Mar 10, 2026|Exchange Online
MC1260700
Outlook Mobile: New external image handling option for safe senders
Mar 24, 2026|Exchange Online
MC1224565MajorAction by Mar 22, 2026
Trust DigiCert Global Root G2 certificate authority to avoid Exchange Online email disruption
Jan 30, 2026|Exchange Online
MC1093912
Microsoft Outlook for iOS/Android: Improved Contacts with profile enrichment and duplicate management
Jun 13, 2025|Exchange Online
MC1125491
Microsoft Outlook for Windows: Add attachments while offline
Jul 30, 2025|Exchange Online
MC1193692
Microsoft 365: Enrich profile cards with custom properties from third-party systems
Dec 10, 2025|Exchange Online
MC1108848
Changing output format for some database properties in Exchange Online cmdlets
Jul 3, 2025|Exchange Online
MC1227623
Change meeting organizer via PowerShell cmdlet in Exchange Online
Feb 6, 2026|Exchange Online
MC1227454Major
Exchange Web Services (EWS) retirement update
Feb 5, 2026|Exchange Online
MC1226222
Prevent/Fix: Guidance for On-Premises Connectors Configuration
Feb 2, 2026|Exchange Online
MC1226749Major
Outlook Web App: OneView and TrueTime features will retire
Feb 4, 2026|Exchange Online
MC1048624MajorAction by Jul 1, 2026
DNS Provisioning Change
Apr 4, 2025|Exchange Online
MC1092458Action by Aug 31, 2025
Microsoft Exchange Online: New Message Trace will be GA; legacy Message Trace will retire
Jun 11, 2025|Exchange Online
MC1197103MajorAction by Feb 28, 2026
Exchange Online ActiveSync device support update
Dec 15, 2025|Exchange Online
MC1191578Major
Update to EWS Access for Kiosk / Frontline Worker Licenses
Dec 2, 2025|Exchange Online
MC1143991
Limiting onmicrosoft domain usage for sending emails
Aug 29, 2025|Exchange Online
MC676299Major
Retirement of Exchange Web Services in Exchange Online
Sep 21, 2023|Exchange Online
MC744115Archived
Microsoft Outlook Mobile: Open a Teams Meeting chat from the calendar
Mar 18, 2024|Exchange Online
MC744122Archived
Microsoft Outlook Mobile: To Do integration
Mar 18, 2024|Exchange Online
MC744113Archived
Microsoft Defender for Office 365: New Quarantine release details
Mar 18, 2024|Exchange Online
MC765811Archived
High Volume Email for Microsoft 365 Public Preview
Apr 2, 2024|Exchange Online
MC765804Archived
Microsoft Defender for Office 365: Adding last used dates to Tenant Allow/Block Lists
Apr 2, 2024|Exchange Online
MC765801Archived
Microsoft Defender for Microsoft Office 365: enhanced clarity in submission results
Apr 2, 2024|Exchange Online
MC761261Archived
New Microsoft Outlook for Windows and web: Improvements to working hours and location
Mar 29, 2024|Exchange Online
1-50 of 262
Per page: