xAI released the Grok for Outlook add-in for Microsoft 365 email and calendar

xAI released Grok for Outlook on July 21, 2026 — an add-in for Microsoft Outlook that lets the Grok AI model draft emails, sort through the inbox, and manage the calendar right inside the mail client, without switching to a separate app.

What Grok can do inside email

Grok for Outlook takes over routine tasks inside the mail client rather than replacing it entirely. The user leaves a short note or a rough draft of a reply, and Grok expands it into a full email, taking the context of the conversation into account and gradually adapting to the author's style.

• Email drafts from short notes, adapted to the user's style
• Inbox triage: archiving finished threads, filtering out clutter, flagging emails that need a reply
• Reading attachments and searching across both email and X simultaneously — without opening a browser
• Managing calendar events directly from the mail interface

Every email Grok drafts remains just that — a draft: sending happens only manually, there is no automatic mailing without the user's involvement.

How much does access to Grok for Outlook cost?

Access to the add-in is limited to paid X and SuperGrok subscriptions — Grok for Outlook is not available to free accounts. Pricing: X Premium at $8 a month, X Premium+ at $40 a month, SuperGrok Lite at $10 a month, SuperGrok at $30 a month or $300 a year, and SuperGrok Heavy at $300 a month.

The add-in installs from the Microsoft Marketplace as a standard Microsoft 365 add-on, just like ordinary corporate mail plugins. This isn't xAI's first move into Microsoft's office software: the company had already released similar Grok add-ins for Word, Excel, and PowerPoint, and Outlook became the next link in the same lineup.

How xAI explains email data protection

xAI states that it does not use a user's Outlook correspondence and calendar to train its models. The company accesses the data only at the moment of a request and does not retain it after providing a response.

"xAI does not use

Outlook mail and calendar data to train models and does not store conversation data processed through these connectors on its servers" — from xAI's official announcement of the Outlook integration.

The company's wording directly addresses the main question corporate clients have when connecting a third-party AI to work email — what happens to the contents of emails after processing.

What this means

Grok for Outlook moves xAI's AI assistant out of a standalone chat and directly into a work tool that millions of employees at companies use every day — following similar moves by Microsoft Copilot and Google Gemini in their own mail clients. For xAI, it's another step toward embedding Grok in the corporate software stack, not just in the X app.

Frequently asked questions

How do you install Grok for Outlook?

The add-in is installed from the Microsoft Marketplace as an ordinary Microsoft 365 add-on — the same way xAI previously released Grok versions for Word, Excel, and PowerPoint.

Does xAI store Outlook correspondence on its servers?

No: according to the company, Grok accesses mail and calendar data only at the moment of a request and does not store conversation data on its servers after providing a response.

How much does the minimum access to Grok for Outlook cost?

The cheapest option is an X Premium subscription at $8 a month; broader Grok capabilities are unlocked by SuperGrok plans ranging from $10 to $300 a month.