4 ms·
The cheapest rate is 'everyone gets one' which requires no sorting. The second cheapest rate is carrier route sorting, where you sort by zip+4 and also put it
by shrubble 6y ago
The cheapest rate is 'everyone gets one' which requires no sorting.
The second cheapest rate is carrier route sorting, where you sort by zip+4 and also put it in the exact order the carrier takes on that route to deliver mail. Also does not require mail sorting.