How can I view all of my contacts who are missing a phone number, email, address, etc?

1. If you want to quickly view a list of all of your contacts who are missing a phone number, email address, physical address, etc you can you use the Tidy Up feature found in the Dashboard tab. Select the Tidy Up button in the top right corner just above the contributions box and select from the available pre-filtered lists. 

2. Once you've selected the list you would like to view, it will open up a page with a filtered list for your selected criteria that you can add additional filters to if you wish.