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Home / Wiki / Email & Communication

Disconnect Outlook mail

Updated May 2026

You'll learn how to: Cleanly remove a connected Outlook (Microsoft 365 / work) mailbox from Nynch.

Time: 1 minute.

When to disconnect

  • You're swapping accounts.
  • You're moving from a trial account to your real work mailbox.
  • You're leaving the workspace and want the integration detached first.
  • Compliance or privacy reasons.

Disconnect does NOT delete already-imported emails from contact timelines. It just stops forward sync and breaks the send-from-Nynch capability for that account.

Steps

  1. Open Settings (gear icon, bottom-left of sidebar).
  2. Click the Email & Calendar tab.
  3. Scroll to the Email & Calendar Integrations panel.
  4. Find the Outlook card. It shows the Connected badge plus your last sync status.
  5. Click the trash-can icon on the right edge of the card (its aria-label is "Disconnect Outlook").
  6. A confirmation prompt appears.
  7. Confirm.
  8. A toast confirms: "Integration disconnected".

The card flips back to showing a single Connect button.

What happens

  • Nynch deletes its stored OAuth credential for the mailbox.
  • Past imported emails STAY on contact timelines. They are not deleted.
  • New mail stops being synced.
  • Send-from-Nynch capability for this account stops working.
  • Any in-flight backfill is cancelled.

If you also have Outlook Calendar connected, it is a separate integration. Disconnecting Outlook mail leaves Outlook Calendar connected (and vice versa). See Disconnect Google Calendar for the calendar-only flow, or repeat the same steps on the Outlook Calendar card.

Reconnect later

If you want to come back:

  1. Open Settings to Email & Calendar.
  2. Click Connect on the Outlook card.
  3. Walk the Microsoft sign-in flow again. See Connect Outlook to Nynch.

Reconnecting starts a fresh forward sync from the moment of reconnection. If you need historical mail again, click Configure on the reconnected card and pick a date range for the backfill.

If something goes wrong

  • Symptom: "Disconnect button is greyed out." → Fix: You are not signed in or the page is stale. Refresh and try again.
  • Symptom: "I got a 'Failed to disconnect' error." → Fix: Microsoft's API can be briefly unavailable. Retry in a minute. If it persists, revoke Nynch's access manually from myaccount.microsoft.com under "Apps and services" and then click Disconnect again in Nynch to clean up the local record.
  • Symptom: "Card still shows Connected after disconnect." → Fix: Refresh the page once. The card reads from a cached integration list.
  • Symptom: "Past emails disappeared from contact timelines." → Fix: Disconnect should preserve imported data. If timelines are missing emails, contact support.

Related: Connect Outlook to Nynch | Disconnect a Gmail account | Connect Outlook Calendar | Settings, tab by tab.