USPS informed delivery will show scans of customer mail as mail is processed / by Michael Graves

You can now see the mail destined for your mailbox before it arrives. The service is called Informed Delivery. It works like this: USPS digitally images the front of mail pieces that run through its automation equipment. An email is generated each day your household has mail that is processed through automation equipment. If no mail is processed through automation that day, you will not get a notice. Package imaging is not available.

Activating Informed Delivery service requires opening an account online at usps.com. Verification of your identity requires you to answer a number of questions. The online verification process is not always successful, so the fallback is to go to in person to a USPS location to sign up. 

The nearest substation to Woodland Heights where you can sign up is River Oaks, 1900 West Gray. However, River Oaks substation is not open on Saturday. The nearest substation to Woodland Heights at which you can get verified in person on Saturday is Oak Forest, located at 2499 Judiway at East T.C. Jester. The Oak Forest substation is open Saturdays from 10 a.m. until 12 noon. It is also open weekdays from 9 a.m. until 5 p.m.