How to Use Copilot in Outlook

Before you can use Copilot in Outlook, you must ensure your account and software meet the 2026 compatibility standards. Copilot requires a Microsoft 365 subscription (such as Business Standard, Business Premium, or a Personal/Family plan) coupled with a Copilot Pro or Copilot for Microsoft 365 license. It is important to note that Copilot works best in the New Outlook for Windows and Mac, or the web version. If you are still using the Outlook Classic desktop application, you may find the features limited or absent unless you toggle the Try the New Outlook switch in the top-right corner.

To verify if Copilot is active, open Outlook and look for the Copilot icon in the ribbon at the top of the screen. If you don't see it, go to File > Office Account and ensure your product is updated to the latest version. Sometimes, you need to click Update Options > Update Now to trigger the appearance of AI features. If you have recently purchased the license, you may need to sign out of your Microsoft account and sign back in to refresh the license token. A common mistake is expecting Copilot to work on offline IMAP or POP accounts; currently, it primarily supports Microsoft 365 and Outlook.com email addresses.

Drafting a new email from scratch is one of the most powerful features of Copilot in Outlook. To start, click New Mail and look for the Draft with Copilot icon within the body of the email or in the top toolbar. When you click this, a prompt box appears where you can describe what you want to say. For example, you might type: "Write a polite follow-up to the design team asking for the project update by Friday." The more context you provide—such as specific names or deadlines—the more accurate the draft will be.

Once the initial draft is generated, you have several options to refine it. You can click the Regenerate button if the first version isn't quite right, or use the Options menu to change the tone to Professional, Casual, or Short. If the email is too long, you can tell the AI to "Make it more concise." After you are satisfied with the text, click Keep it to insert the draft into your email window. Remember that you can still manually edit any part of the AI-generated text before hitting send; always double-check dates and names to ensure the AI hasn't made a halluncination error.

When you return from a break to find a thread with 20 or more replies, using the Summary by Copilot feature is a massive time-saver. Instead of reading every single message, click the Summary by Copilot button located at the top of the email thread. The AI will analyze the entire conversation and provide a bulleted list of the key points discussed, including any decisions made and specific action items assigned to you or others. This is particularly useful for catching up on project discussions where multiple stakeholders have chimed in.

The summary includes clickable citations. If the summary mentions that "John agreed to the budget," you can click the small number next to that statement to jump directly to the specific email where John said those words. This ensures transparency and allows you to verify the AI's interpretation. A pro tip for 2026 is to use the Catch Up feature on the Outlook mobile app, which uses the same summarization engine to give you a quick brief of your unread messages while you are on the go. This prevents the overwhelming feeling of a cluttered inbox after a long meeting.

Sometimes you write an email yourself but aren't sure how it will be perceived by the recipient. This is where Coaching by Copilot comes in. After you have typed your message, click the Copilot icon and select Coaching. The AI will analyze your text for tone, sentiment, and clarity. It might suggest that your email sounds too demanding or point out that a specific sentence is confusingly phrased. It provides actionable suggestions on how to make your communication more professional or empathetic.

For instance, if you are writing a delicate email regarding a missed deadline, the coach might suggest adding a sentence that acknowledges the team's hard work before asking for the new delivery date. This feature is invaluable for non-native speakers or for anyone working in a high-stakes corporate environment where tone matters. Unlike the drafting tool, the coaching tool doesn't rewrite the email for you automatically; it provides a feedback panel on the right side of the screen, allowing you to learn from the suggestions and improve your writing skills over time.

Copilot's integration in Outlook extends beyond the inbox and into your Calendar. You can use the Copilot sidebar to ask questions about your schedule. For example, you can click the Copilot icon in the calendar view and type, "When is my next meeting with Sarah?" or "Do I have any free time on Wednesday afternoon?" The AI will scan your calendar and provide a direct answer, saving you from manual scrolling. It can even help you prepare for upcoming meetings by summarizing related emails and documents that were shared in the invitation.

Another useful trick is using Copilot to create meeting agendas. When you are creating a new meeting invite, you can invoke Copilot to draft an agenda based on previous conversations with the attendees. Simply type a prompt like, "Create an agenda for a 30-minute sync based on the last three emails from the Project X thread." The AI will pull the relevant topics and format them into a professional list. This ensures that every meeting you schedule has a clear purpose and that all participants are on the same page before the call even begins.

If Copilot is not working in Outlook, the most common cause is a synchronization lag between your Microsoft 365 license and the application. Start by checking your connection and ensuring you are signed in with the correct work or personal account that has the Copilot subscription. Go to Settings > General > About Outlook to verify you are running the latest build. If the Copilot button is missing, try resetting the app by going to Settings > Apps > Installed Apps, finding Outlook, and selecting Advanced options > Repair.

In some cases, organizational policies set by your IT department might disable AI features. If you are on a corporate laptop and don't see Copilot despite having the license, check with your administrator to see if Connected Experiences are enabled in the privacy settings. Another frequent issue is the "Copilot is busy" error, which usually happens during peak usage times or if your internet connection is unstable. If the AI freezes while generating a draft, try pressing Ctrl + R to refresh the web view or restarting the application. Finally, ensure that your "Privacy Settings" under File > Options > Trust Center allow for data analysis, as Copilot requires this to function.