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Noticeable differences between Outlook and M365 Outlook 

Noticeable differences between Outlook and M365 Outlook 

Owned by George Fisher
Last updated: Mar 21, 2025
4 min read

 

This is the look of Outlook currently on most users. (users who were not upgraded to M365 apps earlier) 

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Below is the look of  M365 Outlook:  

The most obvious changes are highlighted in red.  

 

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The new Loop App will be present in the toolbar.

Use Loop components in Outlook

Within an Outlook email, you can include a Loop component (e.g., table, paragraph, task list). Others can then view and provide comments or edits which will immediately appear in the Outlook mail for you and all others to see. By using Loop components to capture the discussion and context, you can avoid needlessly long email chains. Learn more about this here.  

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What the Outlook startup window will look like. Notice it shows Microsoft 365.

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What you will see –

You may get a blue box stating you can try the new Outlook Look and feel.

YOU DO NOT NEED TO TRY THE NEW OUTLOOK (see end of this document for a quick look at the new Outlook look and feel)

 

New Look Outlook Client:
Office applications available on left menu

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To change from focused messages in New Outlook view, you will need to go to view > View Settings and select Layout. Change Focused inbox to Dont sort my messages

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You can pin your Microsoft M365 Office applications in the toolbar all the way to the left of the Outlook window for easy access.

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Excel has now been added to your outlook tool bar (you can do this for each of the apps you use)

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OWA: Looks very similar to New Outlook Client - You can add applications to the tool bar the same as the local Outlook client on your system.

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To remove applications from the tool bar, you can just right click on the application in the toolbar and select unpin. (This can be done for applications in the toolbar not the main mail and calendar icons)

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If you want the new look, you can toggle the slide on.

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New outlook signing you in takes a few minutes to update and open.

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Calendar Differences

MS Teams meeting from calendar has changed from classic look to the new look Outlook. There is no Teams button to select. Instead you will see a toggle that you turn on for a teams meeting. You will not see the MS Teams information in the invite until after you send the invite.

Outlook Classic

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New Look Outlook

You only have option for “New Event” or if you select drop down it will give option to send email from calendar as well.

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MS Teams toggle on meeting invite

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Contact the ITS Help Desk in the Library Room 230 or at (203) 254-4069 for assistance.