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Supported Email Clients for MS Office 365 (with Exchange Online)


Please find the list of compatible email clients below. Note, it’s recommended to update your email client to the latest version for the best experience with Email Sidebar.

Email Client Supports Sync Engine Supports Add-In
Microsoft Outlook 2013, 2016, 2019 for Windows Yes Yes+Pin*
Microsoft Outlook 2016, 2019 for Mac Yes Yes
Outlook on the web (
Yes Yes
Outlook app for iOS or Android Yes Yes
Any other desktop or mobile client  
that can be connected to Microsoft Exchange  
and supports folders and/or categories, e.g. iOS Mail app
Yes No

* What ‘Yes+Pin’ means? Sidebar Add-In can be ‘pinned’, so you do not need to reopen it each time browsing different emails or meetings in your email client.


Since Email Sidebar is a cloud solution, if used in, it can run in a browser. Please check browser’s compatibility and update your browser to the latest version for the best experience with Email Sidebar.

Browser Support
Chrome & Chromium-based Full
Internet Explorer 11 Full
Safari (Including iOS version) Full
Android Mobile browser Full
MS Edge Compatible
Internet Explorer 10 Compatible
Firefox Compatible
Opera Compatible
Internet Explorer 9 or lower No


If your email client is Microsoft Outlook for Windows, please make sure the latest version of MS Edge is installed in your system because it is used to render the Sidebar in Outlook.


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