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What's New
This page lists what's new in the world of Microsoft Exchange and Microsoft
Outlook utilities and resources in the past month or so. Dates in parentheses
on each item indicate when it was added to our
database, not necessarily when it
was released. Most recent items are at the top of each category.
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New Utilities | Updated Utilities | Also New | Administrator Resources | Development Resources | Other Resources |
New Utilities
| Item | Description | Added |
|---|---|---|
| Outlook Print | Save time, paper, and printer resources with intelligent email printing. One click. Perfect results. No more misprints. Select the pages you need - no more wasted email trails printed. Custom watermarks. Ensure which email headers are printed (To: From: etc.) to ensure privacy. Works seamlessly with Microsoft Outlook (desktop). Free. | Sep 24, 2026 |
| RSVPnudge flow | Outlook has no built-in way to remind just the people who haven't responded to a meeting invitation. RSVPnudge flow automates sending reminders to required attendees. The reminder is sent as a forward of the meeting request, the Accept/Tentative/Decline buttons keep working for the recipient. The flow runs on demand from a button trigger, so you decide when reminders go out, using the Power Automate mobile app, Teams, or the portal. | Sep 23, 2026 |
| OpenSlot | OpenSlot: Outlook add-in (Outlook on the web, Windows, Mac, new Outlook) that reads Microsoft 365 free/busy for you and the colleagues you pick and inserts a paste-ready list of the times everyone is free into the message you're writing, optionally in the recipient's time zone. "Reply with times" opens a reply-all with the list in it. Read-only; never reads meeting titles; stores no calendar data. Microsoft 365 only. Free plan; Pro $7/month; Team from $5/seat. | Sep 21, 2026 |
| OutlookDog | OutlookDog is an AI assistant add-in for Outlook: Classic desktop, new Outlook, and Outlook on the web, on Microsoft 365 and outlook.com mailboxes. It automates five inbox jobs: detects likely scam and phishing email at read time with the red flags explained in plain English, summarizes any email in a tap, drafts replies in the user's own voice, auto-categorizes the inbox into five piles, and learns filing rules from a one-sentence instruction. AppSource-certified, with centralized deployment for Microsoft 365 organizations. 7-day free trial, no credit card; paid plans from $7/month per mailbox. | Sep 21, 2026 |
| DeclineOffHoursInvite flow | The DeclineOffHoursInvite flow automatically declines meetings outside work hours based on the user's "Work hours and location" settings.Current version: 1.0.1 | Feb 23, 2026 |
Updated Utilities
| Item | Description | Added |
|---|---|---|
| EmailMerge for Outlook | Email Merge Personalized Individually Addressed Invitations, Greetings and Sales Letters at the click of a button. EmailMerge supports Office 365, Outlook 2021, 2019 & 2016. Version 5. | Sep 21, 2026 |
| harmon.ie classic | Companies continuing with Outlook for Windows (classic). Ideal for hybrid or SharePoint on-premises deployments. | Sep 22, 2025 |
| harmon.ie | harmon.ie for SharePoint is an Outlook sidebar that brings SharePoint to every business user by providing easy, full-featured access to SharePoint from the convenience of the email client. New harmon.ie works in Outlook for Windows (new Outlook), Outlook for Windows (classic), Outlook on the Web, and Outlook for Mac. | May 3, 2025 |
| ReplyWithAtt | In Outlook for Windows, when we reply or reply all to the email with attachments, the attachments are not available and we have to add them manually. A lot of people want to retain attachments when they reply or reply to all. This add-in allows a user to reply to a message and include the original attachment. Version 1.0.7 is just released. Small bugs have been fixed. | Oct 10, 2024 |
| RightFrom for Outlook | RightFrom automatically fills in the correct From address when the user is responding to a message in another user's Exchange mailbox. Also RightFrom utility can associate the signatures with the mailboxes. When John Doe navigates to Sales mailbox and clicks the "New message" button, the From: field will be populated automatically with "Sales" and the salesperson (non-default) signature will be added to the message automatically too. | Jun 27, 2024 |
Also New
| Item | Description | Added |
|---|---|---|
| Add Holidays to Outlook's Calendar | Create a Custom Holiday File (HOL) to share any type of all day event with other Outlook users. We include a sample file that counts the days since Jan1 and the number of days left in the year. | Sep 17, 2026 |
| Daily Calendar Time Display in Outlook | Answering common Outlook calendar questions: Why does Outlook show my calendar starting at midnight? Why does my calendar look cluttered, and appointments appear to overlap or share the same time slot. | Aug 20, 2026 |
| Microsoft Account Aliases vs. Separate Accounts | What's the difference between an Outlook.com account address and an alias? | Jul 22, 2026 |
| Mail Templates in Outlook for Windows (and Web) | Mail templates are available in (new) Outlook for Windows. No, not the My Templates feature available in Microsoft email accounts, but real templates, the same templates you use in Outlook Classic. | May 22, 2026 |
| Urban legend: Microsoft Deletes Old Outlook.com Messages | Microsoft won't delete older messages from your mailbox (if it remains active.) | Mar 18, 2026 |
Administrator Resources
| Item | Description | Added |
|---|---|---|
| Office 2016 Administrative Template files (ADMX/ADML) and Office Customization Tool | This download includes Group Policy Administrative Template (ADMX/ADML) and Office Customization Tool (OPAX/OPAL) files for Microsoft Office Professional Plus 2016 and Office 365 ProPlus 2016 apps. | Sep 23, 2026 |
| Remove Do Not Send a Response option in Meeting Requests | Use Group policy to remove the Do Not Send a Response option on meeting requests. | Aug 2, 2018 |
| Microsoft Support and Recovery Assistant for Office 365 | Microsoft Support and Recovery Assistant is a new tool that helps users troubleshoot and fix issues with various Office 365 apps and services. The app diagnoses common Outlook issues like account setup, connectivity issues, password issues, or Outlook stops responding or crashes. To identify the root cause of these issues, the app runs checks such as: Checks licenses, Verify users' credentials and that Office 365 servers are reachable, Checks for updates to Outlook clients, Checks authentication, Network checks, Protocol checks | Jun 7, 2018 |
| Outlook Folder Homepages are missing | In the Outlook update released on October 10 2017, the Folder Homepages setting was deprecated and removed to close a security vulnerability. Removing the folder home page capability "broke" a lot of applications; this can be fixed by setting a registry key. | Oct 23, 2017 |
| Custom Form Security Changes | In the September 12 2017 security update, Microsoft disabled custom form script functionality. Forms with code behind them generate this error message: To help prevent malicious code from running, one or more objects in this form were not loaded. For more information, contact your administrator. If you need scripts enabled, you'll need to set two keys, one to enable scripting and a second one with the message class name of each form that has code behind it. | Oct 23, 2017 |
Development Resources
| Item | Description | Added |
|---|---|---|
| OutlookSpy | OutlookSpy is the ultimate Outlook developer tool. Inspect Outlook objects, Extended MAPI properties, EWS requests, and Microsoft Graph endpoints directly inside Outlook. OutlookSpy supports all versions of Outlook, from 97 to 2024 (both 32-bit and 64-bit), running on any version of Windows, from Windows 95 to Windows 11. Latest version: 5.4.0.5161, September 3, 2026. | Sep 22, 2026 |
| Redemption | Outlook Redemption works around limitations imposed by Outlook Security plus provides a number of objects and functions to work with properties and functionality not exposed through the Outlook object model. Use Extended MAPI, Outlook UI, and Exchange service APIs from any COM-capable language. Build Outlook and Exchange solutions beyond the Outlook Object Model, including stores, folders, messages, profiles, MAPI tables, rules, properties, message import/export, Outlook windows, and selected EWS and Graph interop scenarios. Redemption supports all classic Outlook versions as well as the standalone version of MAPI (no Outlook installed). Latest public version: 6.8.0.6482, September 13, 2026. | Sep 13, 2026 |
| MFCMapi | MFCMAPI uses Microsoft's published APIs to provide access to MAPI stores through a graphical user interface. Its purpose is to facilitate investigation of Exchange and Outlook issues and to provide developers with a canonical sample for MAPI development. Updated frequently. Latest release: June 2026 (26.0.26170.02) | Jun 20, 2026 |
| Open Outlook Templates using PowerShell | A PowerShell version to load templates and change the Sender address without going into Outlook's convoluted Template dialog. | May 21, 2025 |
| Insert Word Document into Email using VBA | How to use a macro to reply to senders by inserting the text from a Word document as the message text. There is also a macro to send a new message with the contents of a Word document inserted. | Jan 23, 2025 |
Other Resources
| Item | Description | Added |
|---|---|---|
| Microsoft 365 (AI at Work) Roadmap | A searchable list of new and upcoming features for Microsoft 365 apps. | Sep 1, 2026 |
| Update history for Microsoft 365 Apps | List of Microsoft Office build numbers per channel and release dates. | Aug 31, 2026 |
| Update history for Office for Mac | List of current version of the Microsoft Office for Mac apps, along with download links for older versions still in support. | Aug 23, 2026 |
| Fixes or workarounds for recent issues on Outlook.com | A list of recent issues, fixes and workarounds. Links to recent issues for Windows, Mac, and Mobile Office apps available from this page. | Jan 22, 2026 |
| Fixes or workarounds for Office issues | Links to fixes and workaround affecting Office applications on Mac and Windows, along with services (Outlook.com and OneDrive) that Microsoft is tracking. | Nov 22, 2025 |