This guide shows you how to install the Xink Mac Client App. You need to install the client app if you want to see the email signatures in Outlook and deploy them to Outlook from Xink. Use the invitation email to get the install link or if you are an administrator you can get the install from the Xink administration interface.
Once you have received the invitation email you can click the install link to install the Xink Mac client app on your Mac.
After you have downloaded the app you should install it and drag the file to the Applications folder. Add your username (which is normally your email address) and copy the password provided in the invitation email and paste it into the credentials dialog box. You can then connect your Outlook with Xink.
The Xink Client App can also be installed on Windows if you are running Outlook for Windows (Outlook 2010 or Outlook 2013). You can choose the platform install by following the link in the invitation email. There is a separate tutorial for installing the Xink Windows Client App on Windows.