I wanted a way to track letters sent via First Class mail. USPS doesn’t provide this directly, a la parcel tracking, but it does scan those letters — all of them — and the data is available, but you have to wire everything up yourself, jumping through a few hoops along the way.
I wanted a way to track letters sent via First Class mail. USPS doesn’t provide this directly, a la parcel tracking, but it does scan those letters — all of them — and the data is available, but you have to wire everything up yourself, jumping through a few hoops along the way.