> For the complete documentation index, see [llms.txt](https://docs.aurinko.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.aurinko.io/unified-apis.md).

# Unified APIs

- [Email API](https://docs.aurinko.io/unified-apis/email-api.md): Aurinko's Email API provides a RESTful interface for accessing and syncing email messages across popular providers like Gmail, Office 365, iCloud, etc.
- [Calendar API](https://docs.aurinko.io/unified-apis/calendar-api.md): Aurinko's Calendar API offers a unified REST interface for managing calendars across Google, Outlook, iCloud, etc. Access events, data sync, and simplify scheduling workflows.
- [Contacts API](https://docs.aurinko.io/unified-apis/contacts-api.md): Aurinko's Contacts API offers a RESTful interface for syncing contacts from Google, Office 365, etc., with features like CRUD operations, incremental sync, and detailed access.
- [Tasks API](https://docs.aurinko.io/unified-apis/tasks-api.md): Aurinko's Tasks API integrates task management into your apps, abstracting Google Tasks, Microsoft To Do, and Outlook Tasks. Perform CRUD tasks while managing lists.
- [Webhooks API](https://docs.aurinko.io/unified-apis/webhooks-api.md): Aurinko's Webhooks API enables real-time event notifications for email, calendar, contacts, and task updates by subscribing to specific resources and handling webhook payloads efficiently.
- [Authentication](https://docs.aurinko.io/unified-apis/webhooks-api/authentication.md)
- [Notification URL Verification](https://docs.aurinko.io/unified-apis/webhooks-api/notification-url-verification.md)
- [Configuring Pub/Sub for Gmail API Webhooks](https://docs.aurinko.io/unified-apis/webhooks-api/configuring-pub-sub-for-gmail-api-webhooks.md): Set up Google Cloud Pub/Sub for Aurinko to receive Gmail API push notifications, eliminating constant polling and enhancing efficiency.
- [Direct API](https://docs.aurinko.io/unified-apis/direct-api.md): A direct pass-through API for native communications with underlying provider APIs using Aurinko's unified OAuth flow.
- [Follow-up Rules API](https://docs.aurinko.io/unified-apis/follow-up-rules-api.md)