Copilot in Outlook makes inbox management easier with AI-powered assistance to help you write emails quickly and turn long email threads into short summaries.
Important: Copilot in Outlook only supports work or school accounts, and Microsoft accounts using outlook.com, hotmail.com, live.com, and msn.com email addresses at this time. Any Microsoft account using an account from a third-party email provider, such as a Gmail, Yahoo, or iCloud, can still use Outlook, but won’t have access to the Copilot features in Outlook.
Important: Copilot is currently available in New Outlook for Windows only. If you're not able to use New Outlook, check with your IT administrator and see Enable or disable access to the new Outlook for Windows.
Need to draft an email?
In Outlook, select Home > New Mail > Mail. To start a new message, select the Copilot icon 
In the Copilot box, type your prompt. For example, "Let the team know we decided to use clay shingles and to go ahead so we meet the deadline."
To choose your desired length and tone, select Generate options 
When you’re finished, select Generate. Copilot will draft a message for you.
Review the output. If it’s not quite what you want, choose Regenerate and Copilot will create a new version.
To completely start over, change your prompt and select Generate again.
Once you're satisfied with the output, select Keep. Edit the draft as needed, and then select Send when you're ready.
Want to summarize an email?
Use email summaries to get through long email threads and catch up on the conversation quickly.
In Outlook, choose the conversation that you want.
Select the Summary by Copilot box at the top of the email thread. Copilot will scan the thread to look for key points and create a summary for you.
Once completed, the summary will appear at the top of the email and may also include numbered citations that, when selected, takes you to the corresponding email in the thread.
Note: Copilot for Microsoft 365 in Outlook is only available in the latest version of Outlook for Mac. Legacy Outlook isn't supported. See The new Outlook for Mac.
Need to draft an email?
In Outlook, select New Message. To start a new message, select the Copilot icon
In the Copilot box, type your prompt. For example, "Thanks for your help. I look forward to seeing you next week!"
When you’re finished, select Generate. Copilot will draft a message for you.
Review the output. If it’s not quite what you want, choose Regenerate draft and Copilot will create a new version.
If you want to change the tone and length of the output, select Neutral to see a list of options – you can even turn your message into a poem if you're feeling creative! To change the length, select Short.
To start completely over, change your prompt and select Generate again.
Once you're satisfied with the output, select Insert. Edit the draft as needed, and then select Send when you're ready.
Want to summarize an email?
In Outlook, choose the conversation that you want.
Select Summarize in the Summary by Copilot box at the top of the email thread. Copilot will scan the thread to look for key points and create a summary for you.
Once completed, the summary will appear at the top of the email and may also include numbered citations that, when selected, takes you to the corresponding email in the thread.
Note: The images provided below serve as examples for iOS, but the instructions are applicable to both iOS and Android devices.
Need to draft an email?
In your iOS or Android device, select New Mail. To start a new message, select the Copilot icon
In the Copilot box, type your prompt. For example, "Let the team know we decided to use clay shingles and to go ahead so we meet the deadline."
To choose your desired tone, select Neutral to see a list of options – you can even turn your message into a poem if you're feeling creative! To change the length, select Medium.
When you’re finished, select Generate. Copilot will draft a message for you.
Review the output. If it’s not quite what you want, choose Regenerate draft and Copilot will create a new version.
To completely start over, select the Copilot icon
Once you're satisfied with the output, select Keep. Edit the draft as needed, and then select Send when you're ready.
Want to summarize an email?
In your iOS or Android device, choose the conversation that you want. Select the Copilot icon
Once completed, the summary will appear under the email.
Keep in mind...
Copilot leverages GPT, a new AI system from OpenAI that creates text based on a prompt. As it is a new system, it may create things you didn’t expect. If you find content to be unexpected or offensive, send us feedback so we can make it better. Also, because the content is generated by AI that draws from the internet, it may contain inaccuracies or sensitive material. Be sure to review and verify the information that it generates. And note that similar requests may result in the same content being generated.
Privacy
Copilot and Microsoft 365 are built on Microsoft's comprehensive approach to security, compliance, and privacy.
For more information about privacy, see the following information:
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If you’re using Copilot for Microsoft 365 in your organization (with your work or school account), see Data, Privacy, and Security for Microsoft Copilot for Microsoft 365.
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If you're using Copilot in Microsoft 365 apps at home as part of Copilot Pro (with your personal Microsoft account), see Copilot Pro: Microsoft 365 apps and your privacy.
