Commands › Exchange Online
Get-ExternalInOutlook
View the configuration of external sender identification that's available in Outlook, Outlook for Mac, Outlook on the web, and Outlook for iOS and Android.
App-only limitation executed read-only 20 Oct 2026 · module v3.10.1 — A server side error has occurred because of which the operation could not be completed. Please try again after some...
Quick start script
# Get-ExternalInOutlook — quick start (serv365.ai)
# 1. Connect (app-only shown; interactive: omit the certificate parameters)
Connect-ExchangeOnline -CertificateThumbprint $thumb -AppId $appId -Organization $org
# 2. Run and inspect
Get-ExternalInOutlook | Format-List
# 3. Export for evidence / drift tracking
Get-ExternalInOutlook | Export-Clixml .\ExternalInOutlook-$(Get-Date -Format yyyyMMdd).xmlSyntax
Get-ExternalInOutlook [[-Identity] <OrganizationIdParameter>] [<CommonParameters>]Parameters (1)
| Parameter | Type | Required | What it controls |
|---|---|---|---|
| -Identity | OrganizationIdParameter | The Identity parameter specifies the GUID of the external sender identification object that you want to view. Although this parameter is available, you don't need to use it. |
Reference facts derived from Microsoft documentation, © Microsoft, licensed CC BY 4.0; restructured with original guidance by serv365.ai.