Chimp-View is an Outlook add-in which works with Office 365.
To install the add-in, log in to your Outlook account in your browser. Select the configuration options (the gear icon).
Select 'Manage Add-ins'
Click 'here to add a custom add-in'.
Select 'Add from URL'.
Insert the URL:
Read the warning and select Install.
Return to your main Outlook browser view.
You now need to connect the add-in to your MailChimp account.
Your MailChimp lists should now show in the add-in panel, ready for you to view or subscribe an email sender or recipient.