Sending emails in a group is more common for both your professional and personal lives. You can see the groups useful, especially for your college project work, or while sending emails to your work team, or conveying a message to your immediate family members if you want to reach all of them at once. Having the email group for a distribution list will save you a lot of time. Once the group is formed, you can easily open the email application and then contact several people in a single go. If you don;t know much about Outlook and want to know how to save time, you are on the right page. Quick steps on how to create a mail group in Outlook 365 on the Windows Operating System.