Can you get tracking information for USPS First Class Service Levels?

First Class Letter Mail gets a tracking code and a barcode, but no tracking information. This is because USPS does not provide tracking events for First Class Letter Mail in transit. You can enable the delivery_confirmation string (at an extra cost) for your First Class Letter Mail shipments.

First Class Parcel Mail gets full tracking. It is also eligible for “delivery_confirmation.”

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