Most items automatically reject a PO box delivery so they're just shit out of luck.
There is a hack for this.
My local post master taught me this, and it works.
For example:
To send something straight to a P.O. Box, this usually is how mail is labeled.
Joe Smith
P.O. Box 153
Anytown, USA
90210
**IF YOU DO THIS INSTEAD**
Joe Smith
101 East Town Street (<——the actual physical street address of your post office)
Unit 153
Anytown, USA
90210
*every* carrier will deliver.
The hack? Giving the physical street address and the P.O. Box number as a ‘unit’ number, spoofs the system into seeing the address as an apartment instead of a P.O. Box.
I’ve had DHL, Fed Ex, UPS, EMS, and USPS packages from couriers & sellers that refuse to deliver to P.O. Boxes, all walk the packages right up to the counter and leave them with the clerk. I have the smallest P.O. Box size you can rent. Anything that doesn’t fit, just gets stored behind the counter until I pick it up.
Hope this helps!