> ## Documentation Index
> Fetch the complete documentation index at: https://docs.voido.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Connect iCloud, Google, Outlook and CalDAV calendars

> Add iCloud, Google, Outlook and CalDAV calendar accounts to Voido, see which ones sync both ways, how read-only events appear, and how to undo AI calendar changes.

Voido shows the calendars you already use alongside your own events in one week view, and you drag a card to change its time. Connecting calendars requires the desktop app; the web app can't read or edit external calendars yet.

## Add a calendar account

Choose **Add Calendar Account** from the account menu in the sidebar, or open Settings → Account → **Connected** and click **+ Add Calendar Account**. Then pick a provider.

> [accordion] iCloud Calendar
>
> Click **Connect iCloud** and enter your Apple ID email and an app-specific password. To create one, sign in to your Apple Account, go to **App-Specific Passwords** and create a new password named Voido.
>
> **Re-import** rebuilds the iCloud data on this Mac without changing anything in iCloud.

> [accordion] Google Calendar
>
> Click **Connect Google** and authorize in your browser. Calendars you can edit sync both ways.
>
> If Voido says the current authorization is read-only, disconnect and reconnect, and allow calendar editing on the consent screen.

> [accordion] Outlook Calendar
>
> Click **Connect Outlook Calendar**, sign in with Microsoft and choose the calendars to sync. Outlook.com and Microsoft 365 accounts are supported, and changes sync both ways.
>
> * If your organization grants read access only, the account shows as read-only.
> * Changing invitees makes Microsoft send invitations.
> * Recurring events can be changed for **this event** or the **entire series** only.
> * Voido polls for changes, so edits made elsewhere don't appear instantly.
> * If an event was changed elsewhere first, your save is rejected and you're asked to refresh.

> [accordion] Other calendars (CalDAV)
>
> Enter the server URL, your username, and a password or app-specific password. The server must use HTTPS.
>
> CalDAV calendars are one-way and read-only: Voido reads them and never changes the external calendar.

Events from read-only calendars are labelled as view-only in Voido.

## Add a to-do account

To-do accounts are added separately. Choose **Add Todo Account** to connect Apple Reminders, Microsoft To Do, Google Tasks, Todoist or Dida365.

## Undo AI calendar changes

The AI assistant asks before it changes your calendar. After a change is applied, the chat's **Operation History** bar offers **Undo All**, **Keep All** and **Review**, and each item has its own **Undo**.

* Undo also restores changes written to connected calendars.
* Changes to an external calendar can only be undone on the device that wrote them. On any other device, Voido asks you to undo on the device that wrote them.
* Invitation emails that were already sent can't be recalled.
* If someone edits an item again after the AI changed it, undo flags it as a conflict for you to resolve.

For assistant permissions, see [AI assistant](https://docs.voido.ai/en/assistant.md).


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