LetterAgent
Mail physical letters by just asking your AI assistant.
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Your letter is collected, trucked to a processing plant, and run through machines that face every envelope the same direction, cancel the stamp, read the address, and spray on a barcode. It is then moved by truck or plane to the plant nearest its destination, sorted into delivery order, and handed to the carrier. Most of that happens overnight, which is why a nearby letter can arrive in two days.
Blue collection boxes are emptied on the schedule printed inside the door, usually once or twice a day. Mail dropped after the last pickup simply waits until the next one, which is the easiest way to lose a day without realizing it. Dropping your letter at a post office counter can buy you a few hours, because counter mail enters the plant stream sooner than box mail. Either way, your letter rides with the day's collection to the processing plant that serves your area, often arriving there in the evening.
The plant run happens in stages. First comes culling: non-machinable pieces, like lumpy, rigid, or oddly shaped envelopes, get pulled out for hand sorting. Then facing: machines flip every envelope so all the addresses face the same way. Then canceling: the stamp gets marked so it can't be reused, and the postmark you see on the envelope is applied at this step. Then the reading: optical character readers scan the address and spray a barcode, the Intelligent Mail barcode, onto the envelope. From this point on, machines read the barcode instead of your handwriting, which is why a clear address and a correct ZIP code matter so much. A smudged address gets kicked to a human or a video-coding station, and that's where delays start.
| Leg | What moves it |
|---|---|
| Local collection to the plant | Trucks, usually the same evening |
| Plant to plant, regional | Trucks on overnight runs |
| Plant to plant, long distance | Trucks, with air used where the delivery standard requires it |
| Plant to the delivery unit | Trucks, arriving before the carriers' morning sort |
Plants hand mail to each other overnight, which is the quiet engine of the whole system. Regional mail moves by truck; longer hauls may fly when the service standard demands it. The ground-heavy network is also why cross-country First-Class mail now runs closer to five days: the distance band is mostly trucks, and trucks take the time trucks take. Your letter may pass through two or three plants on a long trip, getting re-sorted at each one toward a finer destination.
The last sort is the clever one. Delivery point sequencing arranges letters in the exact order the carrier walks the route, so most mail arrives at the delivery unit already sequenced. The carrier merges that sequenced mail with flats and parcels, loads up, and walks. A correctly addressed letter rarely needs a human to think about it after the plant: the barcode carries the routing, the sequencing carries the order, and the carrier carries the bag. When a letter goes missing, it usually went wrong at one of the machine reads, not on the walk.
Ready to mail it? Send your letter with LetterAgent: describe it to your AI assistant, approve the exact quoted price, and it is printed and mailed.
LetterAgent is a working name. Prices include print, postage, and our service fee. US prices in USD, Canadian prices in CAD (Canadian prices exclude applicable sales tax, added at checkout). Currently in private testing.
Need help? Ask your assistant: it can check a job's status any time. If it ever can't handle something: hello@getletteragent.com