Can I drop off a package here 10x -10x 8in at 3am on a Sunday morning? Marked priority express? Even if it goes out Monday I wanna know it will be safe to leave there before my flight

If you are using the airport post office, they have a self service kiosk and it is open during this time period. Credit/debit cards only. Use their Express priority boxes. You will get a receipt and they have a night drop bin just across from the kiosk.

U can do whatever u wish to do.... Think... The place is closed, where do you plan on dropping off the package, with whom & do YOU want a receipt to track the packag???

Wow thank you guys🙏🏼❤️