Send Email Message To Contact Group. To send an email to a Contact Group start typing the name of the group in the To field of your Composer. In the Search box type the name of the contact group.

Choose the contacts and press Insert. Creating a Contact Group from the recipient list of a message goes quite quickly in Outlook 2010 and later. Click Save Close.
In the new window give the contact group a name and click add members to.
The name of the group will show up as a suggestion. To select the suggestion click on the group or press the Tab or Enter keys. In the To field type the name of the contact group. Send Messages to a Group in the Mail App Now lets send an email to the group contact.