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Outlook Add-in supported environments

Overview

Section titled “Overview”

This article lists the supported platforms, Outlook client versions, and Microsoft 365 requirements for the Opensense Outlook Add-in. Confirm that users meet all the requirements before you deploy or troubleshoot the add-in.

General requirements

Section titled “General requirements”

All of these conditions must be met to deploy and use the add-in:

Mailbox
Hosted on Exchange Online (Microsoft 365). On-premises Exchange is not supported for add-in deployment.
License
A supported Microsoft 365 or Office 365 plan. See License requirements.
Outlook client
Meets or exceeds the minimum supported version. See Supported Outlook clients.
Office JavaScript API
Version 1.10 or later. Some features need version 1.13, available on Microsoft 365 subscriptions only.
Directory
The subscription directory is in, or federated to, Microsoft Entra ID.

Not sure which version of Outlook you have? See Microsoft’s guide: What version of Outlook do I have?

Supported Outlook clients

Section titled “Supported Outlook clients”
Client Minimum version Notes
Classic Outlook for WindowsWindows Version 2104 (Build 13929.20296) Must be Click-to-Run. MSI-based installs are not supported.
New Outlook for WindowsWindows Windows 10 Version 1809 (Build 17763) or later New Outlook updates continuously and has no minimum build requirement beyond the OS version.
Outlook on the web (OWA)Windows Any supported modern browser Full add-in functionality supported.
New Outlook for MacMac Version 16.38.506 or later New Outlook interface required. Legacy Outlook for Mac is not supported.
Outlook for iOSMobile Version 2.75.0 or later Must be connected to Exchange Online. See Using the Opensense Outlook Add-in on iOS.
Outlook for AndroidMobile Version 2.2.145 or later Must be connected to Exchange Online. See Using the Opensense Outlook Add-in on Android.

To turn on the New Outlook interface on a Mac, open Outlook, go to Outlook menu > New Outlook, and make sure the toggle is on.

Unsupported environments

Section titled “Unsupported environments”
  • On-premises Exchange. The add-in is not supported, but Opensense supports on-premises Exchange through ExSBR by MessageConcepts. Contact help@opensense.com for details.
  • POP and IMAP accounts
  • Volume-licensed Office (Office 2016, 2019, and 2021 LTSC), which doesn’t support the required API version
  • Legacy Outlook for Mac
  • MSI-based Office installs
  • GoDaddy-managed Microsoft 365 accounts
  • Office 365 E1 and E2 plans

License requirements

Section titled “License requirements”

Users need one of these Microsoft 365 or Office 365 licenses. The add-in is deployed from Microsoft AppSource through Integrated Apps, and not all plans include AppSource access.

Supported

  • Microsoft 365 Business Basic, Standard, Premium
  • Office 365 / Microsoft 365 Enterprise E3, E5, F3
  • Office 365 / Microsoft 365 Education A1, A3, A5
  • Office 365 / Microsoft 365 Government G3, G5

Not supported

  • Office 365 E1
  • Office 365 E2
  • Microsoft 365 Apps for Business or Enterprise (no Exchange Online)
  • GoDaddy-managed Microsoft 365

If you’re not sure whether your plan qualifies, see Microsoft’s Centralized Deployment requirements guide, which includes a compatibility checker.

Deployment requirements

Section titled “Deployment requirements”

The add-in is deployed through Microsoft 365 Integrated Apps with Centralized Deployment, which is supported in most Microsoft 365 tenants. If you’re not sure whether your organization qualifies, use Microsoft’s compatibility checker.

  • Nested groups are not supported for add-in scoping. Users must be members of a top-level group.
  • The admin who deploys the add-in needs Global Administrator or Exchange Administrator permissions.

What’s next

Section titled “What’s next”
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