Set-ExternalInOutlook set to True but External tag is not appearing after several days

Question

Set-ExternalInOutlook -Enabled $true

Get-ExternalInOutlook confirms setting is enabled

It has been several days and no tags are shown from O365 Mail, Windows Outlook Client or Outlook Mobile app. Are there other settings that need to be enabled for the mail tip to be shown?

Answer 1

Getting "Set-ExternalInOutlook -Enabled $true" to start tagging messages.

Mine just started working last night, just before the 24 hour mark. I found another post about this at right about the same time I set mine up that suggested changing the release preferences option in the 365 admin center to "Targeted release for everyone". I don't know for certain if that change is what got it to work for me, but if you haven't changed that setting it might be worth a shot.

The setting is located at:

Microsoft 365 Admin Center\Settings\Org Settings\Organization profile\Release Preferences

Organization profile (tab at top of Org Settings)

I hope that helps you and anyone else that might run across this.

Answer 2

It is 24hours already and still no tagging on incoming external emails. Our Allowlist is empty.

Will try to wait another few days.

Answer 3

Hello Jenni B203,Good morning!Thank you for publishing in Microsoft Community. We are happy to help you.

Enable external sender identification in supported versions of Outlook.

Set-ExternalInOutlook -Enabled $true

Get-ExternalInOutlook confirms setting is enabled.

• Enabled: True means the feature is enabled; False means the feature is disabled.
• AllowList: The list of exceptions. Messages received from the specified senders or senders in the specified domains don’t receive the External icon in the area of the subject line.

Note: After you enable the cmdlet, it can take between 24-48 hours before the users see the external tag from received external emails.

The new emails that arrive are automatically tagged. Older emails that you have do not get the external tag.

Don’t forget that the tag feature only is available for Exchange Online, and this will not work for Exchange on-premises. We may see this feature in Exchange on-premises, but there are no words about that yet.

If you have already confirmed that the Set-ExternalInOutlook setting is enabled using the Get-ExternalInOutlook command, and the External tag is still not appearing after several days, You need to contact our Microsoft support online level 2 they will check the issue using some back-end tool to help you.

please see below for instructions: 

1. Create a Service Request in the O365 Admin Portal and indicate the request as clearly as possible.
2. Or you can contact our hotline and we will create a Service Request ticket for you Global Customer Service phone numbers (microsoft.com)

Please feel free to let us know if there are any questions or if we got you wrong. We will continue to assist you based on the information you provide. We sincerely appreciate your patience and cooperation. 

Sincerely Eben Ezer Tres | Microsoft Community Moderator

Answer 4

Try contacting related development team via phone support since the changes are not reflected.