How does Chronos work with Outlook?
Chronos connects to Outlook via Microsoft Graph OAuth 2.0, reads your Outlook calendar events, and schedules tasks into available gaps automatically. When a meeting changes in Outlook, Chronos detects the update on the next sync and reshuffles your task schedule to fit. Two-way sync keeps your Outlook calendar and Chronos task list consistent.
What Chronos does with your Outlook
Two-way calendar sync via Microsoft Graph
Chronos syncs your Outlook calendar in both directions using the Microsoft Graph API: it reads your existing Outlook events to understand your committed time, then writes Chronos-scheduled tasks back as calendar events so they appear alongside your meetings in Outlook, Teams, and any Microsoft 365 app that reads your calendar. The Microsoft Graph Events resource exposes full create, update, and delete operations, letting Chronos manage task events programmatically without requiring any manual export or import. When you reschedule or complete a task in Chronos, the corresponding Outlook calendar event is updated or removed within the same sync cycle.
Instant push when Chronos reschedules a task
When Chronos schedules or reschedules a task — either because the AI found a better slot or because a meeting shifted and freed up time — it immediately pushes the change to Outlook via the Microsoft Graph Events API, translating Chronos task fields into an Outlook calendar event. This means your Outlook calendar reflects AI rescheduling decisions within seconds, not on the next background sync cycle. If you delete a task in Chronos, the corresponding Outlook event is also removed, keeping your calendar free of stale commitments.
OAuth 2.0 via Microsoft Graph with encrypted token storage
Chronos connects to Outlook using the Microsoft Graph OAuth 2.0 flow, requesting the Calendars.ReadWrite and offline_access scopes so it can read and write your calendar events and refresh credentials automatically in the background. The OAuth flow supports both Microsoft 365 work and school accounts and personal Microsoft accounts through the common tenant endpoint. After authorisation, Chronos stores an encrypted access token and refresh token pair in the database; the refreshMicrosoftToken function handles automatic token renewal before expiry, so the integration stays active without any action from you.
How teams use this
Consultant scheduling work around a Microsoft 365 calendar
A management consultant running on Microsoft 365 connects Outlook to Chronos at the start of each engagement. Client calls, internal reviews, and recurring governance meetings are already in Outlook; Chronos reads those commitments and builds a task schedule for deliverables, research, and prep work that fits into the remaining gaps each day. When a client meeting moves or a new stakeholder review appears in Outlook, Chronos detects the change on the next sync and adapts the surrounding task schedule — pushing prep work earlier and clearing the time block that was previously occupied. The consultant's Outlook calendar reflects the updated plan within seconds, visible in Outlook Web, the Outlook desktop app, and Microsoft Teams.
Related integrations
Ready to connect Chronos with Outlook?
Start scheduling smarter — free, no credit card required.
Start Free TrialAlready a user? Setup help →