LetterTrack Tracking
Please enter the LetterTrack tracking number to check the latest shipping status.
About Letter Track
Letter Track is a software service for adding USPS Informed Visibility mail-tracking barcodes to United States First-Class letter mail, flat mail, and qualifying bubble mailers. USPS transports and scans the mailpiece; Letter Track creates the barcode, captures available scans, and presents tracking information to senders and recipients.
| Verified field | Information |
|---|---|
| Official name | Letter Track |
| Official website | https://www.letter-track.com/ |
| Carrier type | Mail-tracking software service; USPS remains the postal operator. |
| Primary region | United States First-Class letter and flat mail flows. |
| Tracking page | Letter Track website and account tracking screen |
Carrier Entity Relationships
| Entity | Relationship |
|---|---|
| Letter Track | Letter Track provides software that prints an Intelligent Mail Barcode and captures USPS scan events for participating mailpieces. |
| USPS Informed Visibility | USPS Informed Visibility supplies the postal visibility system whose barcode scans are used by Letter Track for tracking. |
| USPS | USPS accepts, processes, transports, scans, and delivers the physical mailpiece. |
| 17TRACK | 17TRACK is an independent tracking platform and does not operate Letter Track or USPS transportation. |
Quick Answer
Use the Letter Track tracking screen or 17TRACK with the barcode identifier printed above the recipient address. Letter Track tracking is intended for USPS mailpieces prepared through Letter Track; an order number or marketplace reference is not the barcode. If no event appears, check that the barcode was printed correctly, the mailpiece entered USPS processing, and the identifier was entered without typing errors.
How to Track Letter Track Packages
Letter Track tracking is created by the sender when the sender imports addresses or enters them manually, prints the Letter Track barcode, applies regular postage, and places the mailpiece into the USPS network.
| Path | Steps |
|---|---|
| Letter Track account | Sign in, open the searchable tracking screen, and search by recipient address, date range, internal reference, or order number. |
| 17TRACK | Enter the Letter Track-generated tracking identifier in 17TRACK and review the available USPS-related events. |
| Sender workflow | Import or enter addresses, print the barcode on an envelope or label, apply regular postage, then use a mailbox pickup, USPS drop box, or Post Office drop-off. |
The tracking identifier is normally supplied by the sender’s Letter Track account or tracking email. A marketplace order number, customer reference, postage receipt number, and address are different identifiers. A newly printed barcode may have no event until USPS processing produces a scan. Recipients should ask the sender for the barcode; senders should verify the address, print quality, postage, and mailing handoff.
Tracking Number Formats and Examples
Letter Track uses a USPS Intelligent Mail Barcode above the address block. The supplied Letter Track pages describe the barcode function but do not publish a single public text-length pattern or a complete human-readable example. Do not infer a service from an unverified prefix; use the Letter Track account or 17TRACK’s carrier recognition.
Tracking Number Format
| Identifier family | Normalized pattern |
|---|---|
| Letter Track-generated USPS Intelligent Mail Barcode | Barcode data printed above the address; use the exact identifier supplied by the Letter Track account or email. |
| Recipient address search | Address text, rather than a parcel-style tracking number, can be used in Letter Track’s searchable dashboard. |
| Internal reference or order number | Merchant-entered reference used to find a mailpiece in Letter Track; it is not necessarily issued by USPS. |
An Intelligent Mail Barcode is not automatically the same thing as a USPS package tracking number. Letter Track’s documented use is machineable First-Class letter, flat, and bubble mail tracking. Letter mail must be less than 6 by 11.5 inches, no more than one-quarter inch thick, and under 4 ounces. Flat mail may be up to 12 by 15 inches, no more than three-quarters inch thick, and under 13 ounces. Bubble mailers qualify according to their size, thickness, and weight.
Tracking Statuses and Meanings
Letter Track’s pages specifically describe Out for Delivery and Delivered in Mailbox. Other displayed events represent USPS barcode scans captured by Letter Track and should be interpreted as visibility events, not proof that Letter Track physically handled the mail.
Status Quick Lookup
| Status | Lifecycle stage |
|---|---|
| No scan or no event | Pre-processing visibility is absent; the barcode may not yet have been scanned or may have been entered incorrectly. |
| In transit / USPS facility scan | USPS processing has generated a visibility event while the mailpiece moves through the postal system. |
| Out for Delivery | The mailpiece has reached the destination Post Office and is being placed on a USPS postal truck for delivery. |
| Delivered in Mailbox | Letter Track says this event indicates that a postal truck containing the addressed mailpiece traveled past the mailbox at the recorded date and time. |
| Exception or return indication | Review the event detail and contact the sender or USPS for the physical-mail issue; Letter Track does not control delivery resolution. |
Services and Delivery Times
Letter Track’s documented service is domestic USPS First-Class mail visibility for letters, flats, and qualifying bubble mailers. The site gives a 3 to 5 business-day delivery expectation for First-Class mail; it is an estimate rather than a delivery guarantee.
Service Comparison
| Service | Best for |
|---|---|
| First-Class letter tracking | Machineable envelopes under 4 ounces with regular postage and a Letter Track barcode. |
| First-Class flat tracking | Large envelopes under 13 ounces and within the published flat dimensions. |
| First-Class bubble mail tracking | Qualifying lightweight bubble mailers that fit the letter or flat specifications. |
Delivery Time
| Service | Published delivery standard |
|---|---|
| USPS First-Class letter, flat, or qualifying bubble mail | 3 to 5 business days; the Letter Track page presents this as an expected delivery time, not a guarantee. |
Destination Country Delivery Times
| Destination Country / Region | Primary service type |
|---|---|
| United States domestic destinations | USPS First-Class letter, flat, or qualifying bubble mail; published expectation is 3 to 5 business days. |
| International destinations | Letter Track’s supplied public pages describe a United States domestic First-Class workflow rather than an international service schedule. |
Delivery can be affected by USPS processing volume, weekends, holidays, address quality, weather, service interruptions, machineability, and local delivery conditions. A scan timestamp is a visibility event; it is not a promise of arrival at a particular hour.
Common Tracking Problems and Solutions
Start with the identifier and the latest scan, then separate a tracking-display problem from a physical USPS delivery problem. The sender generally has the best access to the Letter Track dashboard and mailing records.
Problem & Solution
| Problem/status shown | Check first |
|---|---|
| Invalid or empty result | Confirm that the Letter Track barcode identifier, rather than an order number, was entered; ask the sender to search by address or reference. |
| No update after mailing | Confirm barcode print quality, postage, mailing date, and whether the item entered USPS processing; then contact Letter Track support for a dashboard issue. |
| Long transit gap | Allow for USPS scan gaps and processing volume; the sender should retain the mailing record and review the latest event. |
| Delivered in Mailbox but missing | Check the mailbox, household members, building staff, neighbors, and the delivery time; the recipient should contact USPS and the sender. |
| Damaged, lost, or returned mail | Photograph the item and packaging, preserve evidence, notify the sender, and use the applicable USPS or merchant resolution process. |
International Shipping, Customs and Carrier Handoffs
The supplied Letter Track pages describe a domestic USPS First-Class letter and flat-mail workflow. They do not describe Letter Track-operated international line-haul, customs processing, or destination-country handoffs.
| Stage | Responsibility described by the official pages |
|---|---|
| Domestic USPS processing | USPS processes and scans the Letter Track mailpiece after the sender deposits it into the postal network. |
| International transport or customs | No Letter Track international customs or handoff workflow is described on the supplied official pages; do not treat Letter Track visibility as customs clearance. |
Customer Service
For a Letter Track dashboard, barcode, import, or email issue, contact Letter Track. For physical delivery, mailbox access, or USPS handling, the sender or recipient should also use USPS support.
Customer Service
| Channel | Verified contact/link |
|---|---|
| General inquiries | info@letter-track.com |
| Technical support | support@letter-track.com |
| Website and account | Letter Track Contact Us |
Prepare the barcode identifier, sender and recipient addresses, mailing date, service type, latest scan, account email, and a clear description of the issue. Do not send payment-card details by email. Letter Track cannot decide USPS delivery claims or replace the physical mailpiece.
FAQ
Basic FAQs
Enter the Letter Track-generated identifier in the Letter Track dashboard or 17TRACK to view available USPS scan events.
Ask the sender or check the Letter Track tracking email and account record; the identifier is associated with the barcode printed above the address.
It is an Intelligent Mail Barcode printed above the recipient address on the envelope or label.
The first event appears when USPS generates a scan captured by Letter Track; printing a label alone does not prove physical acceptance.
A scan may not yet be available, the barcode may be unreadable, or the mailpiece may not have entered USPS processing; ask the sender to verify the dashboard record.
Letter Track states that USPS First-Class mail generally reaches the recipient in 3 to 5 business days, subject to postal conditions.
Review the latest event, verify the address, and ask the sender to contact Letter Track while the recipient contacts USPS about physical delivery.
Check the mailbox, household members, building staff, and neighbors, then contact USPS and the sender with the event time.
Letter Track supplies tracking visibility; a loss or damage resolution must be handled through the applicable USPS or merchant process.
Use info@letter-track.com for inquiries or support@letter-track.com for technical support.
Expert FAQs
No; Letter Track provides tracking software and USPS operates the physical postal delivery network.
Letter Track describes it as the time when a geo-enabled USPS delivery vehicle carrying the addressed mailpiece traveled past the mailbox.
Letter Track tracking requires its Intelligent Mail Barcode; regular postage is still applied separately to the prepared mailpiece.
The documented letter limits are less than 6 by 11.5 inches, no more than one-quarter inch thick, and under 4 ounces.
The documented flat limits are up to 12 by 15 inches, no more than three-quarters inch thick, and under 13 ounces.
Yes; Letter Track describes imports from platforms including Amazon, eBay, Etsy, TCGPlayer, Shopify, ShipStation, and ShippingEasy, along with manual address entry.
Yes; the Letter Track tracking screen supports searches using an internal reference and order number field, although that reference is separate from the USPS barcode.
The supplied public Letter Track pages describe an account dashboard, imports, and email notifications; API credentials and endpoints are not part of that published workflow.
Tracking API
// Letter Track public pages describe dashboard tracking and imports.
// Current public official Letter Track API endpoint is not documented on those pages.
// 17TRACK API: independent multi-carrier tracking
POST https://api.17track.net/track/v2.4/register
Headers:
17token: YourKey
Content-Type: application/json
Body:
[
{
"number": "TRACKING_NUMBER",
"carrier": "CARRIER_CODE"
}
]
// Verify the current 17TRACK carrier code in the documentation before production use.
// 17TRACK cannot alter delivery, approve claims, or issue refunds.
Sources & References
- Letter Track — USPS First Class Mail tracking on Letter mail and Flat mail. Letter Track
- USPS Letter Mail Tracking. Letter Track
- USPS Flat Mail Tracking. Letter Track
- USPS Bubble Mail Tracking. Letter Track
- USPS Informed Visibility Mail Tracking software for mass letter mailings. Letter Track
- USPS Regular Mail tracking — Pricing. Letter Track
- Letter Track — Contact Us. Letter Track
- 17TRACK API documentation. 17TRACK
17TRACK is an independent tracking platform and is not affiliated with Letter Track.
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