A shared mailbox is special type of email account that lets multiple people send and receive email from a single address.
Shared mailboxes are appropriate for:
Some well-known examples of shared mailboxes include firstname.lastname@example.org and email@example.com.
If you have permission to access a shared mailbox, you can access it using Outlook or Webmail:
Membership to a shared mailbox is controlled by a group and only group owners can add or remove people from the group.
Shared mailboxes are set up on request.