Shared mailboxes allow a group of people to read and send messages from a common email address. For example, if a customer emails info@coolexample.com, employees who have access to that mailbox could receive and respond to the message.
Required: You need admin permissions to create a shared mailbox. For more info, see admin roles from Microsoft.
Sign in to the Exchange admin center. Use your Office 365 email address and password (your ITEGY-Distinctive Technology Services username and password won't work here).
Go to recipients, and then select shared.
Select New.
In the new window, enter the following:
Display name: The name of your shared mailbox.
Email address: The name of the email address before the @, like contact for general inquiries or sales for your sales team.
Under Users, select Add.
Enter your preferred users to give them permission to this shared mailbox and select OK.
Select Save. It can take about 15 minutes for the shared mailbox to be available for all users.
(Optional) To customize your permissions, select Edit >mailbox delegation. Add or Remove users for your chosen permission, and then Save.