Note:

This integration is slowly moving towards EOL. I have already created integrations which will replace it - MS365-Calendar/Mail/Teams/ToDo, these can be used now using HACS Custom. When these are available on HACS Default I will then stop work on O365-HomeAssistant.

Many will have seen a warning in the logs - Detected that custom integration 'o365' uses 'async_config_entry_first_refresh', which is only supported for coordinators with a config entry and will stop working in Home Assistant 2025.11 - this further forces the EOL due to a change in HA Core, which means that the integration will cease to work after the 2025.11 HA release without really significant re-work. Because this integration is setup via YAML, it does not have a config_entry, the replacements listed above do.

O365 --> MS365 - A potential big change - your views needed

Office 365 Integration for Home Assistant

This is a fork of the original integration by @PTST which has now been archived.

This integration enables:

1. Getting and creating calendar events
2. Getting emails from your inbox using one of two available sensor types (e-mail and query)
3. Sending emails via the notify.o365_email service
4. Getting presence from Teams (not for personal accounts)
5. Getting the latest chat message from Teams (not for personal accounts)
6. Getting and creating To-Do tasks
7. Setting Auto Reply/Out of Office response

This project would not be possible without the wonderful python-o365 project.

Buy Me A Beer 🍻

I work on this integration because I like things to work well for myself and others. Whilst I have now made significant changes to the integration, it would not be as it stands today without the major work to create it put in by @PTST. Please don't feel you are obligated to donate, but of course it is appreciated.

Documentation

The full documentation is available here - O365 Documentation

Nice video from fixtse showing how to install the O365 integration to Home Assistant. Also providing some Lovelace cards for displaying content from O365 - O365 Card for Home Assistant

Migration

Details on how to migration to the new MS365 integrations can be found here - Migration