ms365

A fast, scriptable CLI for Microsoft 365 via the Microsoft Graph API: Outlook mail, calendar, and identity from your terminal — with named accounts so a personal Outlook.com sign-in and a work/school tenant live side by side.

ms365 auth login -a personal
ms365 mail list --folder inbox --search "invoice"
ms365 calendar events --from 2026-07-20 --to 2026-07-27

See Getting started and the command reference.