Turn off Outlook focused inbox for all users in Office 365 using PowerShell

How to disable focused inbox for all users in Office 365 using PowerShell Set-OrganizationConfig 

What is focused inbox?

Focused inbox separates your emails into "Focused" and "Other". Newsletters and marketing emails will get sorted into "Other", leaving the important emails you need to deal with under "Focused".

Focused inbox is one of those features that some people love and others hate. People who receive a lot of bulk email might find focused inbox helpful.

Because focused inbox can be managed at the organisational level or for individual mailboxes, I usually recommend turning focused inbox off at the tenant level and then only turning it on for individual people who want to use it.

Turn off focused inbox for all users using PowerShell Set-OrganizationConfig

# connect to Exchange Online PowerShell
Connect-ExchangeOnline -UserPrincipalName itadmin@ctrlf.cloud

# get current focused inbox setting
Get-OrganizationConfig | Format-List Name, *focused*

# turn off focused inbox for all users
Set-OrganizationConfig -FocusedInboxOn $false 

Users will also get this prompt in Outlook when you disable focused inbox

Your administrator made a change to your Focused Inbox settings. You can change it back if you like.

Configure focused inbox for one user using PowerShell Set-FocusedInbox

# get current focused inbox settings for one user
Get-FocusedInbox -Identity bender@ctrlf.cloud

# turn focused inbox on for one user
Set-FocusedInbox -Identity bender@ctrlf.cloud -FocusedInboxOn $true
 

Reference:

Configure Focused Inbox for everyone in your organization

https://docs.microsoft.com/en-us/microsoft-365/admin/setup/configure-focused-inbox

by Author