On 12 September 2023 at 0102hrs two individuals on electric scooters came down 117th St E and turned on to 138th Ave Ct E. They went from one end of the street to the other and opened mailboxes to see if anyone had left mail to be picked up that day. They did not bother one Neighbor who has a Ft. Knox heavy steel mailbox. Also if you get the USPS app that lets you know approximately what to expect on a given day it will help you know if someone has gone through your mail. This link will take you to a USPS web page which will guide you through signing up for the service. https://www.usps.com/
Mail theft must pay well because electric scooters are not inexpensive and judging by the ease they went up 117th they were fairly powerful, therefore probably in the upper end of the price range. It appears that they used a truck as well as the scooters, as the first picture shows a truck stopping at some mailboxes at 0130:29 hrs.
I have heard that they hit another nearby neighborhood. It is tempting to put outgoing mail in your postbox to be picked up the next day. However remember that unless you have a very heavy steel mailbox like the Ft. Knox, it is easy for thieves to steal your mail in the early morning hours.
Below are pictures of the bad guys: