Created by Claude - please verify

Mail contacts - MX lookups run from the web server once per distinct domain.

Required Microsoft Graph permissions

Exchange.ManageAsApp (+ View-Only Recipients) User.Read.All (guest duplicates) — application permissions, granted to the app registration with admin consent.

Licence: None.

Endpoints: Get-MailContact · Resolve-DnsName MX per contact domain · GET /v1.0/users (guests)

If a permission is missing, this report shows a red load error with the Graph status code — not an empty table.

Mail Contacts Hygiene

Mail contacts pile up: partners who changed domain, suppliers who went out of business, people who are now guests as well. They produce wrong address-book entries and bounced replies.