How to remove [External] from Outlook emails, users are getting furious

Anonymous
2022-12-13T14:26:06+00:00

Since early December all of our Outlook365 users (in all tenants) have been getting the tag [External] in the subject line of their Outlook, and want it removed. I am only finding PS scripts which do not work. I have searched the settings and security areas of the admin console but have not found anything. Please help!

Outlook | Windows | Classic Outlook for Windows | For home

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

0 comments

54 answers

Sort by: Oldest
Most helpful Newest Oldest
  1. Anonymous
    2022-12-15T14:50:04+00:00

    This is great for sysadmins! Now if only us users had the option of turning it off without asking our sysadmin!

    Was this answer helpful?

    30+ people found this answer helpful.
    0 comments
  2. Anonymous
    2022-12-15T15:18:14+00:00

    Thanks for your reply Jim.

    I already evaluate this solution but I was not remove this label from messages header.

    But I found a solution.

    We can remove alert with your solution via Powershell and add a rule in Exchange Admin Center that add a disclamer in messages that match the required attributes as External or Internal sender etc.

    Below a link I found tha could be a workaround to bypass this problem

    https://www.techielass.com/enable-external-email-warning-tag-in-exchange-online/

    this is our test

    Was this answer helpful?

    1 person found this answer helpful.
    0 comments
  3. Anonymous
    2022-12-17T02:28:40+00:00

    Also having the same issue across every tenant we manage.

    "externalinoutlook" was set to false the first moments that this appeared which is now more than a week ago and no changes to a single tenant has occurred yet.

    adding domains to the exclusion works even though its disabled.

    Every single client has requested this be disabled as its damn ugly in the implementation of it.

    Am all ears how to get O365 to respect the setting when its set to false.

    Was this answer helpful?

    8 people found this answer helpful.
    0 comments
  4. Anonymous
    2022-12-17T17:33:25+00:00

    Just to be clear, you are running the command at the Tenant level??

    Run on a test workstation (Powershell as admin)

    nstall-Module ExchangeOnlineManagement

    Import-Module ExchangeOnlineManagement

    Connect-ExchangeOnline -UserPrincipalName [USER@DOMAIN].com -ShowProgress $true

    Get-ExternalInOutlook

    Then rerun the command at the tenant level

    Set-ExternalInOutlook -Enabled $false

    Was this answer helpful?

    1 person found this answer helpful.
    0 comments
  5. Anonymous
    2022-12-17T18:22:33+00:00

    Yes Jim, is at the Tenant level but powershell and module are installed on a workstation just for launch command.

    Was this answer helpful?

    0 comments