- The support personnel of Coldcard and KeepKey weren’t sure exactly and couldn’t provide me with the correct information.
I couldn't find anything for KeepKey, but here's a "
tweet from Coldcard" that mentions they support shipping to P.O. Boxes on their Coinkite store.
For what it's worth, I'm glad Trezor finally partnered with a new shipping company to make this possible
[it wasn't possible a few months back].