Sending, receiving, and organizing email in Outlook.com
Hi Claire,
As per checking, the Claude 365 connector only supports sign‑in with business or school Microsoft accounts. Personal Microsoft accounts (like Outlook.com, Hotmail, or live.com) aren’t supported for this integration, which is why you’re being blocked when trying to use a personal email. Therefore, If you want to use Claude with Microsoft 365, you’ll need to connect it through a work or school account that has the appropriate licensing.
For more information, you may also refer to this link: https://support.claude.com/en/articles/12542951-set-up-the-microsoft-365-connector