xAI launches Grok for Outlook add-in for Microsoft 365 mail and calendar

On July 21, 2026, xAI released Grok for Outlook, an add-in for Microsoft Outlook. It lets the Grok AI model draft emails, triage the inbox and manage the calendar right inside the mail client, with no need to switch to a separate app.

What Grok can do inside your inbox

Grok for Outlook handles routine work inside the mail client rather than replacing it outright. The user jots down a short note or a rough reply, and Grok expands it into a full email. It takes the thread's context into account and gradually adapts to the author's writing style.

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

Every email Grok writes stays a draft. Sending happens only manually, and nothing goes out automatically without the user's involvement.

How much does 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. The plans: 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 Microsoft Marketplace as a standard Microsoft 365 add-on, just like any ordinary corporate email plugin. This isn't xAI's first move into Microsoft's office software: the company previously released similar Grok add-ins for Word, Excel and PowerPoint, and Outlook is the latest addition to that lineup.

How xAI explains email data protection

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

"xAI does not use

Outlook email 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 enterprise customers ask when connecting a third-party AI to work email: what happens to message content after it's processed.

What it means

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

FAQ

How do I install Grok for Outlook?

The add-in installs from Microsoft Marketplace as a regular Microsoft 365 add-on, the same way xAI previously shipped Grok versions for Word, Excel and PowerPoint.

Does xAI store Outlook emails on its servers?

No. According to the company, Grok accesses email and calendar only at the moment of a request and does not keep conversation data on its servers after responding.

What's the cheapest way to get Grok for Outlook?

The cheapest option is an X Premium subscription at $8 a month. SuperGrok plans, priced from $10 to $300 a month, unlock broader Grok capabilities.