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Release notes for Outlook for Windows (new)

Outlook for Windows (new) is updated regularly to provide new features, performance improvements, bug fixes, and security updates. These release notes provide more information about those changes. Learn more by visiting Manage updates in new Outlook for Windows.

Note

Outlook for Windows (new) is currently not available in Azure Government. Please check the roadmap for any future announcements.

December 12, 2025

Version: 20251205004.10

  • Sensitivity labels: now invoke appropriate add-ins when an add-in event is triggered.
  • Global Address List: the user experience was refreshed.

December 5, 2025

Version: 20251128003.09

  • Search: A new contextual ribbon tab allows users to modify their search scope and refiners.

November 21, 2025

Version: 20251114001.19

  • PST: Show contacts from PST files in the People Hub.
  • Option to resend a message right after it is recalled.
  • Personal dictionary in Editor settings to improve spelling and text suggestions.
  • Sort the message list by message type, including Message, Meeting Invitation, and different Meeting Responses.
  • File tab in the ribbon while composing an email for quick access to common commands like Save and Print.
  • Meeting poll: Improvements to the creation of a meeting poll in the Calendar event form.
  • Save, load, and update email OFT file templates. (See Settings > Files.)

November 14, 2025

Version: 20251031008.24

  • Save new email templates and load a template while writing an email.
  • In single line mode, message list actions are in the sender column.

November 7, 2025

Version: 20251031008.17

  • File tab is available in the popped out window to save, print, and take other message actions.

October 31, 2025

Version: 20251024006.11

  • Importance icons on notifications.
  • Newsletters: Create subscriber groups to manage large lists.

October 24, 2025

Version: 20251017002.15

  • Summaries of linked attachments from Copilot (available to more users).
  • Easier import of PST files from classic Outlook.

October 17, 2025

Version: 20251010001.15

  • New app icon
  • PST: Forward as attachment support.
  • Drag and drop files between accounts as attachments.
  • Custom account description in Account settings.

October 10, 2025

Version: 20251002060.13

  • PST calendar items: Read-only view of calendar items in PST files.

October 3, 2025

Version: 20250926009.05

  • OAuth 2.0 for iCloud accounts.
  • Summarize emails with Copilot (expanded to more users).

September 26, 2025

Version: 20250918044.05

  • Snooze, pin, ignore options available in ribbon when email is popped out.
  • Drag and drop multiple attachments to add to an email.

September 12, 2025

Version: 20250829003.07

  • Auto-export to PST: Schedule (under Settings > Files) an export of an entire mailbox or a specific mailbox folder to a .pst file.

September 5, 2025

Version: 20250829003.06

  • Subject header improvements: Improved interactions in the subject header of emails.

August 29, 2025

Version: 20250815005.24

  • Offline: Open and sync attachments.

August 22, 2025

Version: 20250815005.12

  • Send Replies To header: Customize which email address receives replies using this optional header.
  • Improvements to RSVP in message list: Improvements to the experience of RSVPing from the message list.
  • Jump To in the message list: Jump to a section in the message list.

August 8, 2025

Version: 20250801002.10

  • Find text in reading pane: use the familiar shortcut Ctrl + F to find text in the reading pane.
  • Category support for Google, Yahoo, IMAP, and POP accounts: extended support for categories in mail and calendar to more account types.
  • New PDF previewer - improvements to the way PDF attachments open.

August 1, 2025

Version: 20250725003.04

  • New RSVP settings: Two new settings to improve the user experience when responding to meeting invitations: (1) don't delete invitation email after RSVPing and (2) autodecline if the attendee's calendar shows as busy.
  • Agents in Copilot Chat: Support for declarative agents in Copilot chat in Outlook, already rolled out to Microsoft 365 Copilot chat.

July 11, 2025

Version: 20250704003.06

  • Offline signature settings: Save and use signatures while offline.

June 27, 2025

Version: 20250620014.12

  • Ribbon key tips setting: Users can now control whether key tips are displayed on the ribbon when pressing the Alt key.

June 20, 2025

Version: 20250613016.10

  • Offline folder actions (create, move, delete): Users can now create, move, and delete folders while new Outlook is in offline mode.

June 13, 2025

Version: 20250606009.12

  • Various fixes to functionality and performance.

June 6, 2025

Version: 20250516009.19

  • Summarize email attachments with Copilot: Summarize PDF, Word, and PowerPoint email attachments with Copilot in Outlook.

May 30, 2025

Version 20250523006.11

  • Offline "Days of email to save" expanded to 30 days: The default mail sync window in offline mode has been expanded from seven days to 30 days.
  • Offline search folders: Search folders, which help users group emails based on certain criteria, are now available while offline.
  • Move emails between accounts: Consumer users can now seamlessly move emails between their personal accounts, streamlining organization and productivity. For Enterprise users, this feature is off by default and controlled by a policy managed by administrators. By enabling this policy, admins can grant their users the ability to move emails between accounts in a way that aligns with organizational needs and policies.

May 23, 2025

Version 20250516009.05

  • Sharing Copilot in Outlook: When logged into Outlook with an account that has access to Copilot Pro or AI credits through a Microsoft 365 Personal or Family subscription, Copilot features are available for all connected email accounts. This includes Outlook.com, Hotmail.com, Live.com, MSN.com, and third-party providers such as Gmail, Yahoo, and iCloud, as long as the user is logged into Outlook on the same device. Learn more here.
  • Get email coaching with Copilot: Have an important email to write and want to feel confident that it effectively conveys your intended message? With Copilot in Outlook, you can get helpful suggestions on how to adjust the tone, clarity, and reader sentiment before you hit send. Learn more here.
  • Disable Copilot in Outlook: To disable Copilot, open the Settings window and visit the "Copilot > Copilot control" page. From there, you can switch the "Turn on Copilot" control off.

April 25, 2025

Version 20250418009.08

  • Newsletters in Outlook (Preview): Newsletters in Outlook let you create and send structured, professional newsletters quickly. This feature helps you keep your team informed and engaged. While in Preview, admins can enable it for some or all users in an organization. Learn more here.

April 18, 2025

Version 20250411007.08

  • Notification batching: Batches are groups of cards in the user's Notification pane separated by subject. Items from the same email thread, document, sheet, etc. are grouped into a single batch.
  • Category management for delegates: Delegates can now create new categories on behalf of the person who granted them permissions. They can also apply said categories to the Calendar of that same person who granted them permissions. Delegates can view the list of the delegator's Categories by visiting the Accounts > Categories page of the Settings window and selecting the delegator's account from the dropdown. Learn more

April 11, 2025

Version 20250404005.10

  • Group messages as a conversation for PST files: Users are now able to group messages as a conversation for emails within .pst files.

March 28, 2025

Version 20250320055.21

  • Delete invitations from Inbox after responding: You can enable/disable this new meeting invite option by visiting the Calendar > Events and invitations > Invitations from other people section of your Settings window.
  • Organize and reorder your folders: You can now arrange your folders in any desired order by dragging and dropping them in the position that you want.
  • Pin favorites: Easily access your most-used folders by pinning them to the top of your Left Nav Bar. This feature streamlines navigation, ensuring your important folders are always within reach.
  • Folder icon colors: We’re introducing the ability to customize folder icon colors in the new Outlook. This feature lets you change the color of folder icons, making it easier to differentiate and personalize your folders visually.
  • "None" color category for Mail and Calendar: This update provides more flexibility and customization in categorizing your emails and calendar events. By selecting the "None" option, users can now choose to have items without a designated color, allowing for cleaner organization and more control over which items stand out visually.

March 21, 2025

Version 20250314002.09

  • Microsoft 365 admin center - Apps usage report: View and monitor migration progress for the new Outlook for Windows through a new chart added to the Microsoft 365 Apps usage report. Additionally, the per-user level data table now includes activity from Outlook for Windows. Learn more by visiting Microsoft 365 admin center apps usage reports.
  • Visual updates in Mail: Fluent V9 and style updates have been applied to the Compose Draft Tabs and Focused/Other experiences, respectively.

February 28, 2025

Version 20250221002.15

  • S/MIME: S/MIME (Secure/Multipurpose Internet Mail extensions) signing and encryption is now supported. All new and existing S/MIME configurations work without any explicit action from your administrator.
  • Custom folder ordering: Users can arrange folders in any desired order by dragging and dropping the folders in the position they want. To get started, ensure that the Folder pane > Sort folders > Custom folder order option is selected in the View tab of the ribbon.
  • Enjoy the benefits of your Microsoft 365 or Copilot Pro subscriptions in Outlook: Activate subscriptions from accounts that don't have a Microsoft mailbox - either personal Microsoft accounts set up with a non-Microsoft email address (Gmail, Yahoo, etc.) or accounts provided by your work or school administrator. Learn more by visiting Connecting a Microsoft subscription to Outlook.
  • Receive Calendar notifications even when Outlook is closed: You can now receive Calendar notifications on your desktop when Outlook isn't launched. You can then select the notification to open the Calendar event details.

February 21, 2025

Version 20250206076.11

February 14, 2025

Version 20250206076.09

  • Ribbon arrow vertical navigation: When users have keyboard focus within the Ribbon, they're now able to press the up/down arrows to move quickly between the Ribbon tabs (Home, View, etc.) and the actions within each tab.
  • Performance improvements: Improvements in load performance and focus in Compose ribbon.
  • Light/dark mode improvements: You can now keep Dark mode enabled while you have a light background enabled for your Reading pane.

February 07, 2025

Version 20250131002.09

  • Performance improvements: Improvement in app startup, reduction, and optimization of network usage during app boot cycle.

January 28, 2025

Version 20250116064.16

  • PST File Support: The first-phase PST (also known as Outlook Data File) support in the new Outlook for Windows provides read-only access to Mail items within .pst files. Users are now able to open .pst files, read their emails within .pst files, and search .pst files for emails. All Calendar, Contacts, and Tasks data saved in the .pst files are still there, but they can't be accessed in this preview. Next releases will expand PST support capabilities.
  • Copilot is now included in Microsoft 365 Personal and Family: We're bringing Microsoft Copilot and Microsoft Designer to Microsoft 365 Personal and Family subscribers in most markets worldwide. These changes bring the transformative power of AI to the personal productivity tools that millions of people use every day. Note: these changes only apply to our consumer subscription plans. Learn more here.
  • File link Summarization with Copilot Chat: You can now use Copilot Chat to summarize SharePoint and OneDrive file links in your emails. Simply hover above the link and a button to summarize the file with Copilot will appear.
  • Chat Assisted Scheduling: Copilot now helps you schedule simple meetings such as 1:1s and focus time. Just ask Copilot to find some time with someone in your org and it will find the optimal time.
  • Calendar background notifications: Users will continue to receive their calendar notifications while the new Outlook isn't launched/opened. Users can select the notification item to open the Calendar event details. They can also snooze or dismiss the event and launch their respective meeting provider to (1) Join the meeting or (2) Chat with the meeting participants. To enable this feature, users must (1) enable the "Send notifications when Outlook is closed" setting in new Outlook, (2) allow the new Outlook permissions to run in the background in Windows 11 Settings, and (3) enable the "Show Notification banners" setting in Windows, as well.
  • Expressions Pane to Fluent V9: V9 design update of the emoji picker pane in Compose.
  • Tips Pane entry point moved from Suite Header to Ribbon: The Tips pane's entry point is moving from the Suite Header (found at the top of the window) to the Help tab of the Ribbon.
  • Places - Individual desk booking: With the addition of individual desk booking via Places Finder, employees can view individual desks, filter by sections, and book a specific desk.
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