Give guest access-Last fall, we updated Outlook on the web to give you the ability to set up guest access for people outside your organization, set group classification as defined by Office 365 admins, and view usage guidelines. In addition to bringing groups to more Outlook apps, we’ve released several new features for Groups in Outlook on other platforms, too.
Recently released updates for Groups in Outlook There is more to come as we continue to work on making Groups better in response to your input, so stay tuned.