In the Outlook client and Outlook Web App, users can expand distribution lists and Global Address Lists (GALs) to list each individual member. This can be useful when you want to send a message to everyone in a particular group except a few recipients.

Expanding a Distribution List or Global Address List

To expand a list,

  1. compose a new message as usual.
  2. Add a list to the To:, Cc:, or Bcc: fields as usual.
  3. Once, added, click the plus sign (+) next to the list's name.
    NOTE: If using the Outlook client, click OK to confirm the expansion of the list.

The list should now be expanded.