If you have a Google Postmaster account, follow these four easy steps to integrate it with Inbox Tracker
Navigate to the Inbox Tracker settings cog and select Google Postmaster Tools Setup
2. Follow the steps in the prompt
3. Return to the settings cog and select Google Postmaster Tools Account Status
4. From the status page you can schedule Inbox Tracker to retrieve your data by selecting the + icon for the domain you configured.
You are all set! Data should be displayed within 24-48 hours after configuring the Postmaster Tools display.
Once you have everything setup, here is an article on how to view and interpret the data within Inbox Tracker.
Click here for more information on Google Postmaster's data.