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The parcel becomes undeliverable until someone can identify it. Without a label, the carrier cannot tell where it goes or who sent it, so the parcel is usually set aside for manual handling and may be returned to the sender or held at a depot. An address note inside the box is the best rescue.
Labels come off more often than senders expect. A label stuck to a dusty box, a damp parcel, or a stretchy mailer can peel away in sorting machines, and once it is gone the barcode goes with it. The parcel is not lost in the sense of vanishing, but it cannot move forward on its own, and every day it sits unidentified is a day the recipient waits.
Sometimes, if the parcel can be matched another way. Sorting staff may find a second label, a customs form, or a marking on the box that points to the destination. If the sender's address is written on the box itself, staff may return the parcel to the sender rather than delivering it, since the sender is the only address they can confirm. Delivery to the intended recipient without a label is rare, because guessing the destination risks sending someone's parcel to the wrong person.
If the tracking record shows the parcel was scanned at a depot and then stopped moving, a lost label is one possible cause, though a missed scan or a depot backlog can look the same. The sender should contact the carrier with the tracking number and describe the parcel, including its size, weight, and contents, so staff can try to match it to an unlabelled item in the depot.
Put a second copy of the destination address inside the parcel, on top of the contents, before you seal it. A simple sheet with the recipient's name and full address, plus your own name and return address, gives sorting staff something to work with if the outer label comes off. Staff who open an unlabelled parcel for identification will find that sheet first, and it can turn a dead-end parcel into a delivered one.
This trick costs nothing and takes seconds, yet most senders never do it. It also helps if the outer box is damaged and the label is torn rather than fully lost. Keep the inside note plain and legible, and do not rely on an invoice alone: an invoice may list a billing address that differs from the shipping address.
| Identification on the parcel | What happens if the label falls off |
|---|---|
| Nothing else on the box | Parcel held as unidentified; may be returned or held at a depot |
| Sender address written on the box | Parcel can often be returned to the sender |
| Address note inside the box | Staff can identify the recipient and forward the parcel |
| Second label on another side | Parcel keeps moving on the spare label |
Stick the label to a flat, clean, dry surface, not over a seam, a flap edge, or a curved mailer. Labels stuck across a box flap peel when the flap flexes, and labels on dusty or damp cardboard lose grip fast. Press the whole label down firmly, including the corners, and cover it with a strip of clear packing tape if you want extra hold. Keep the tape flat and smooth, since wrinkles and glare can confuse barcode scanners.
For plastic mailers, use a label pouch or tape the label down fully around all four edges, since smooth plastic gives adhesive little to grip. Avoid reusing a box with old labels still on it, and remove or black out old barcodes, so scanners do not read the wrong label if yours comes loose.
Contact the carrier promptly with the tracking number, a description of the parcel, and the destination address. If the parcel is at a depot, staff may be able to match it from your description and apply a new label. The recipient should also watch for a delivery notice or a depot pickup message, since a re-labelled parcel sometimes arrives under a new tracking event that looks unfamiliar.
If the parcel cannot be matched, it may eventually be treated as undeliverable and returned to the sender, or held for a period and then disposed of under the carrier's unclaimed-parcel rules. That is the worst outcome, and it is exactly what an inside address note prevents. When you ship anything you cannot afford to lose, the inside note is cheap insurance.
LetterAgent provides Canada Post Xpresspost shipping labels in Canada, with a flat rate and a 5 kg maximum. You ask your AI assistant, get a per-label quote, approve the exact price, and pay once through Stripe to receive the label PDF. Print the label clearly, fix it flat on the box, and slip an address note inside before you seal it.
Ready to ship it? Get a shipping label with LetterAgent: describe it to your AI assistant, approve the exact quoted price, and get your label.
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