Python command-line tool that reads a newline-delimited username list and checks Microsoft 365/Office 365 account indicators through ActiveSync, Autodiscover v1, the Office.com GetCredentialType flow, or the legacy MSOL OAuth password-grant flow. It emits CSV-like username/status results. Results are method-specific identity signals, not proof of mailbox access. The Office.com method has a source-confirmed status-mapping defect for federated-account result codes, and the repository's 2024 code should not be assumed to match current Microsoft endpoint behavior. ActiveSync and MSOL modes submit a password (the default is Password1 when omitted); use only against explicitly authorized scope.
Python
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