This is a free service and it’s very easy to sign up. Go to USPS.com, create an account, verify your identity, and begin receiving notification on your smartphone, tablet, or computer. Activation time may vary, but typically you will begin to receive notifications within three business days. Once Informed Delivery commences, you will see a greyscale image of items to be delivered.
Download the Informed Delivery app for iOS, Android, and Windows in your app store and have access anywhere.
For more information, click here. To see FAQs, scroll to the bottom of the page.