ePOST (인터넷우체국) Tracking

Please enter the ePOST (인터넷우체국) tracking number to check the latest shipping status.

http://www.epost.go.kr/

TRACK

About ePOST

ePOST refers to the official Internet Post Office channel associated with Korea Post services in the Republic of Korea. For tracking, it is best understood as the official online entry point for Korea Post domestic mail, Parcels, registered items and international postal products such as EMS, rather than a separate private courier.

Field	Verified information
Official name	ePOST; local Korean name commonly shown as 인터넷우체국; postal operator relationship: Korea Post / 우정사업본부.
Official website	https://www.epost.go.kr/
Carrier type	National postal operator service portal covering mail, Parcels, registered mail and international postal tracking functions.
Primary region	Republic of Korea for acceptance, domestic delivery and international dispatch; destination postal operators handle many overseas last-mile stages.
Tracking page	Official delivery tracking on ePOST
Parent organization	Korea Post operates under the national postal administration framework in Korea.
Founded	Not publicly confirmed here for the online channel as a separate carrier entity.
Headquarters	The online channel is tied to Korea Post administration; a separate commercial headquarters for ePOST is not publicly confirmed.

Carrier Entity Relationships

Entity

Relationship summary

ePOST

ePOST is the official Internet Post Office channel used to access Korea Post services and tracking.

View all details for canonical carrier relationship

Entity type	Official postal service portal.
Why it matters to tracking	Users may search the online portal name, the English ePOST name, Korea Post, or EMS Korea for the same shipment lifecycle.
Official evidence	The ePOST.go.kr domain provides official Internet Post Office service pages and tracking functions.

Domestic parcel, registered mail and EMS

Domestic parcel, registered mail and EMS are postal services surfaced through ePOST and operationally handled through Korea Post networks.

View all details for operated services relationship

Entity type	Postal service families.
Why it matters to tracking	The service family affects acceptance scans, compensation rules, speed expectations and whether an international S10 identifier is used.
Official evidence	Official ePOST and EMS pages publish tracking and service guidance.

International exchange office and customs

International exchange facilities and customs authorities process export and import stages before the destination postal operator performs last-mile delivery.

View all details for international network relationship

Entity type	Network and regulatory entities.
Why it matters to tracking	A scan at an exchange office or customs location does not prove final delivery, and a customs hold is not controlled by 17TRACK.
Official evidence	EMS and postal tracking pages distinguish acceptance, dispatch, arrival and delivery events.

Destination postal operators

Destination postal operators such as USPS, Royal Mail, Japan Post, Australia Post and others may become the physical custodian after import handoff.

View all details for last-mile partner relationship

Entity type	International or last-mile partners.
Why it matters to tracking	The same S10 number may continue to work on the destination post website after the parcel leaves Korea.
Official evidence	UPU postal exchange conventions and EMS partner networks use country-coded postal identifiers for cross-border visibility.

17TRACK

17TRACK aggregates available tracking events for ePOST shipments but does not transport, reroute, refund or insure Parcels.

View all details for 17TRACK relationship

Entity type	Independent multi-carrier tracking platform.
Why it matters to tracking	17TRACK helps identify carrier events across postal handoffs; operational changes must be requested from the carrier, sender or seller.
Official evidence	17TRACK API documentation describes multi-carrier tracking registration and status retrieval.

Quick Answer

To track ePOST packages, enter the postal tracking number on the official ePOST tracking page or on 17TRACK. Use the shipment tracking number from the receipt, label, shipping email or marketplace order page; an order number alone normally cannot retrieve postal scans.

User goal	Best first action
Check latest postal scan	Use the official tracking page when you know the number is issued or handled by ePOST.
Track a cross-border order	Use 17TRACK when the parcel may involve a marketplace, origin post, Korea Post, EMS and a destination postal operator.
No result appears	Remove spaces or hyphens, verify the carrier, wait for physical acceptance, and ask the seller for the postal tracking number instead of the order ID.

Pro Tip: 17TRACK is an independent tracking platform. 17TRACK can show available events, normalize carrier status categories and help with multi-carrier visibility, but 17TRACK cannot change the address, release customs, approve refunds, file insurance or schedule a delivery.

How to Track ePOST Packages

Track through the official ePOST tracking page for direct Korea Post visibility, or use 17TRACK when the shipment may involve an overseas postal handoff or a marketplace logistics partner.

Method	Steps and use case
Official tracking	1. Open the official delivery tracking page. 2. Enter the tracking number without spaces or hyphens. 3. Review acceptance, transit, customs, delivery or return events. Best for confirmed Korea Post and EMS items.
17TRACK tracking	1. Paste the tracking number into 17TRACK. 2. Let carrier recognition suggest the carrier when available. 3. Compare origin, handoff and destination events. Best for ecommerce, international postal and multi-carrier Parcels.
Sender or seller confirmation	Ask the sender for the postal tracking number, dispatch date, service name and whether the item has been physically handed to the post office. This is essential when only an order number is shown.

A tracking number is usually printed on the post office receipt, shipping label, EMS waybill, registered-mail receipt, merchant shipping email or marketplace shipment page. A merchant order number, internal reference, payment ID or delivery notice is not always accepted by ePOST tracking.

Tracking Number Formats and Examples

ePOST may show domestic Korea Post identifiers, EMS identifiers and UPU S10 international postal identifiers. Being trackable on ePOST does not always mean the number was issued by ePOST; inbound foreign postal items can keep the origin post number.

Tracking Number Format

Identifier family

Normalized pattern

Korea domestic parcel or registered identifier

Numeric postal tracking or registration number; remove spaces and hyphens before searching.

View all details for Korea domestic identifiers

Length/structure	Domestic formats are service and label dependent; official public pages may not publish a single universal consumer rule.
Issued by	Korea Post through post office counters, online labels or business shipping systems.
Typical service/use	Domestic parcel, registered mail, insured or traceable mail within Korea.
Who sees it and where	Senders see it on receipts or labels; recipients see it in seller messages, delivery notices or shipment notifications.
Tracking scope	Normally visible from acceptance through sorting, delivery attempt, delivery, pickup or return inside Korea.
Important caveat	Do not infer the exact service only from a numeric prefix unless the official receipt or label confirms the product.

EMS outbound from Korea

EA ######### KR, EM ######### KR or similar S10-style EMS identifiers.

View all details for EMS outbound identifiers

Length/structure	Two letters, nine digits including a check digit, and KR country code; example is masked, not queryable.
Issued by	Korea Post / EMS when the shipment is accepted in Korea.
Typical service/use	International EMS documents and merchandise Parcels.
Who sees it and where	Sender receipt, EMS waybill, marketplace shipping email and customs documents.
Tracking scope	Acceptance in Korea, export processing, international dispatch, import arrival, customs and destination delivery where partner data is exchanged.
Important caveat	Destination scans depend on EMS data exchange and the destination postal operator.

International parcel or registered outbound from Korea

CP ######### KR, RR ######### KR, RA ######### KR or similar S10 postal identifiers.

View all details for international postal outbound identifiers

Length/structure	UPU S10 structure: two service indicator letters, nine digits and KR as the issuing country code.
Issued by	Korea Post when the item originates in Korea.
Typical service/use	International parcel post, registered mail and traceable postal items outside the EMS product family.
Who sees it and where	Sender receipt, international postal label, ecommerce tracking email and customs declaration references.
Tracking scope	Export and import scans vary by destination post and product class; ordinary unregistered mail may have limited or no end-to-end tracking.
Important caveat	The first two letters indicate a broad postal category, not a guaranteed delivery speed.

Inbound foreign postal number handled in Korea

LX ######### CN, RV ######### JP, EE ######### Us or another S10 identifier ending with the origin country code.

View all details for inbound foreign postal identifiers

Length/structure	Two letters, nine digits and a two-letter origin country code such as CN, JP or Us.
Issued by	The origin postal operator, not ePOST.
Typical service/use	Inbound international postal packets, registered items or EMS items entering Korea.
Who sees it and where	International buyers and recipients see it on seller pages or origin-post receipts.
Tracking scope	May show origin scans, airline dispatch, Korea import processing, customs and Korea Post delivery where data is available.
Important caveat	ePOST can track some inbound numbers after handoff, but the number remains origin-post-issued.

Merchant order or marketplace reference

Order ID, seller reference or platform logistics ID; format varies by merchant.

View all details for merchant references

Length/structure	Not standardized as a postal tracking number.
Issued by	Marketplace, merchant, warehouse, freight forwarder or logistics platform.
Typical service/use	Order management, warehouse picking or customer-service lookup.
Who sees it and where	Buyer account page, invoice, checkout confirmation or seller support message.
Tracking scope	Usually not accepted by official postal tracking unless the merchant maps it to a carrier number.
Important caveat	Ask for the carrier tracking number if ePOST shows no result.

Tracking Statuses and Meanings

Tracking events for ePOST should be read as a chain of custody: label or notice, physical acceptance, sorting, export or import processing, customs, last-mile delivery, pickup, delivery exception or return.

Status Quick Lookup

Status

What it means

Electronic information received / label created

Shipment data exists, but physical handover may not have happened.

View all details for label created

Lifecycle stage	Pre-shipment.
Current responsible party	Sender, seller, warehouse or shipping partner until a postal acceptance scan appears.
What happens next	The parcel is handed to the post office or pickup network and receives an acceptance scan.
What you should do	Ask the sender whether the item has been physically dispatched if no acceptance appears after normal dispatch handling.

Accepted / received at post office

The postal network has physically accepted the item.

View all details for accepted status

Lifecycle stage	Accepted.
Current responsible party	Korea Post for domestic or Korea-origin postal items.
What happens next	Sorting, routing and transport to the next facility.
What you should do	No action unless the item later exceeds the service standard or stops moving unusually long.

In transit / departed facility

The item is moving between postal facilities or transport legs.

View all details for in transit status

Lifecycle stage	In transit.
Current responsible party	The postal operator or transport custodian holding the item at that scan stage.
What happens next	Arrival scan at a sorting center, exchange office or destination delivery unit.
What you should do	Monitor; scans may be skipped during line-haul or weekend movements.

Arrival at outward office of exchange / dispatch from outward office

An international item is being prepared for export or has left the origin postal exchange.

View all details for export exchange status

Lifecycle stage	Customs/Handover.
Current responsible party	Origin postal operator, export security and international transport partners.
What happens next	Airline or line-haul movement to the destination country.
What you should do	Wait for destination arrival; do not treat export dispatch as delivery.

Customs inspection / customs hold

Customs or security authorities are reviewing the shipment or required data.

View all details for customs status

Lifecycle stage	Customs/Handover.
Current responsible party	Customs authority, sometimes supported by the postal operator as declarant or handling agent.
What happens next	Release, request for information, tax assessment, return or seizure under local law.
What you should do	Watch for notices and provide invoices, ID or tax payment only through official channels.

Out for delivery

The destination delivery unit has assigned the item to a delivery route.

View all details for out for delivery

Lifecycle stage	Out for delivery.
Current responsible party	Local delivery post office or destination postal operator.
What happens next	Delivered scan, delivery attempt, pickup notice or exception.
What you should do	Ensure someone can receive signature-required items and check delivery instructions.

Delivered

The carrier recorded final delivery, pickup completion or delivery to an authorized location.

View all details for delivered status

Lifecycle stage	Delivered.
Current responsible party	Delivery carrier has completed its recorded delivery action.
What happens next	Proof of delivery or delivery details may be available depending on service.
What you should do	If not received, check mailbox, parcel locker, reception, household members and neighbors before escalating.

Delivery attempted / available for pickup

The carrier tried delivery or is holding the item for collection.

View all details for pickup status

Lifecycle stage	Pickup.
Current responsible party	Local post office, delivery office or collection location.
What happens next	Recipient pickup, redelivery attempt or return after the holding period.
What you should do	Follow the delivery notice and bring required ID or authorization.

Returned to sender / return processing

The item is moving back because delivery could not be completed or because customs or address rules require return.

View all details for return status

Lifecycle stage	Return.
Current responsible party	Carrier currently transporting the item back to the sender.
What happens next	Return transit, sender delivery or disposal according to postal and customs rules.
What you should do	Contact the seller or sender quickly; address changes are usually limited once return begins.

Services and Delivery Times

Delivery speed for ePOST depends on product type, acceptance time, destination, customs, airline capacity, partner handoff and local delivery conditions. Published standards are not the same as guaranteed delivery unless the specific product terms say so.

Service Comparison

Service

Best for

Domestic parcel

Domestic ecommerce, gifts and traceable parcel delivery inside Korea.

View all details for domestic parcel service

Service type	Domestic postal parcel.
Coverage	Korea domestic addresses served by the postal network.
Tracking level	Acceptance, sorting, delivery attempt, delivery or return events.
Key size/weight condition	Current limits must be checked on the official service page before shipping.
Included protection/extra service	Protection, receipt and delivery evidence vary by service and paid options.
Main limitation	Address quality, remote areas and holidays can affect delivery.

Registered mail

Traceable letters, important documents and items needing receipt evidence.

View all details for registered mail service

Service type	Registered postal mail.
Coverage	Domestic and some international lanes depending on postal product.
Tracking level	Acceptance and delivery evidence; event depth varies by route.
Key size/weight condition	Mailpiece rules and contents restrictions apply.
Included protection/extra service	Registration evidence; optional value declaration or insurance may be service-dependent.
Main limitation	Not equivalent to express parcel service.

EMS

Faster international documents and Parcels with postal express tracking.

View all details for EMS service

Service type	International postal express.
Coverage	Countries and territories supported by EMS partner networks and current service availability.
Tracking level	End-to-end EMS tracking where origin, airline and destination operators exchange events.
Key size/weight condition	Destination-specific weight, dimension and content limits apply.
Included protection/extra service	Compensation and extra services depend on EMS terms and declared contents.
Main limitation	Customs and destination-post operations can extend delivery beyond transport time.

International parcel / small packet

Cross-border postal Parcels where speed and tracking depth vary by product.

View all details for international parcel service

Service type	International postal parcel or packet.
Coverage	Destination countries supported by postal exchange agreements and active routes.
Tracking level	Registered and parcel products have more tracking than ordinary mail.
Key size/weight condition	Must comply with postal, customs and airline rules.
Included protection/extra service	Depends on registration, insurance and declared value choices.
Main limitation	Longer visibility gaps are common during export, airline transit and import customs.

Delivery Time

Service

Published delivery standard

Domestic parcel

Varies by origin, destination, acceptance cutoff, public holidays and delivery area.

View all details for domestic parcel delivery time

Business or calendar days	Check the current official domestic service guide for the applicable definition.
Guarantee status	Not a guaranteed date unless the selected service terms explicitly provide a guarantee.
Starts counting from	Physical acceptance scan, not label creation.
Main delay factors	Cutoff time, remote area, address issue, holidays, weather and missed delivery.
Official source date/validity	Use current ePOST service pages at shipment time.

EMS

Destination-dependent; official EMS pages provide country and service availability guidance.

View all details for EMS delivery time

Business or calendar days	Usually presented by postal service standards; customs and destination delivery may not follow Korean business days.
Guarantee status	Service standard is not the same as a money-back guarantee unless current EMS terms specify one.
Starts counting from	Acceptance and export processing after the item is handed to the postal network.
Main delay factors	Customs, prohibited items, destination postcode errors, flight capacity and destination-post workload.
Official source date/validity	Check EMS Korea service availability and destination conditions before mailing.

International parcel or registered mail

Varies widely by destination, transport mode and import processing.

View all details for international parcel delivery time

Business or calendar days	Destination-post definitions and customs calendars can differ.
Guarantee status	Generally an estimate or standard, not a guaranteed delivery date.
Starts counting from	Physical posting and acceptance in Korea or origin country.
Main delay factors	Export dispatch, airline uplift, import customs, taxes, returned items and limited tracking on some products.
Official source date/validity	Current official country notices and restrictions override general estimates.

Destination Country Delivery Times

Destination Country / Region

Estimated Delivery Time Range

United States

EMS 4–10 business days; postal parcel 10–30 business days; average about 12–18 days.

View all details for United States delivery

Primary Service Type	EMS, international parcel, registered packet.
Average Delivery Days	Average about 12–18 days for traceable postal Parcels under normal conditions.
Last-Mile Partner / Handoff Carrier	USPS for many postal items after import.
Customs & Clearance Tips	FDA, de minimis, address format and incomplete customs data can create holds; USPS first scan may appear after import processing.

Canada

EMS 5–12 business days; postal parcel 12–35 business days; average about 14–22 days.

View all details for Canada delivery

Primary Service Type	EMS and international postal parcel.
Average Delivery Days	Average about 14–22 days.
Last-Mile Partner / Handoff Carrier	Canada Post.
Customs & Clearance Tips	CBSA review and taxes can delay release; remote provinces extend last-mile time.

United Kingdom

EMS 4–9 business days; postal parcel 10–25 business days; average about 11–17 days.

View all details for United Kingdom delivery

Primary Service Type	EMS, parcel post, registered packet.
Average Delivery Days	Average about 11–17 days.
Last-Mile Partner / Handoff Carrier	Royal Mail or Parcelforce depending on product.
Customs & Clearance Tips	VAT and import fee payment notices can pause delivery; postcode accuracy is important.

Germany

EMS 5–11 business days; postal parcel 12–30 business days; average about 13–20 days.

View all details for Germany delivery

Primary Service Type	EMS and international postal parcel.
Average Delivery Days	Average about 13–20 days.
Last-Mile Partner / Handoff Carrier	Deutsche Post / Dhl Paket for postal handoff.
Customs & Clearance Tips	IOSS or VAT data helps ecommerce Parcels; missing invoice details can cause customs requests.

France

EMS 5–11 business days; postal parcel 12–30 business days; average about 13–21 days.

View all details for France delivery

Primary Service Type	EMS and postal parcel.
Average Delivery Days	Average about 13–21 days.
Last-Mile Partner / Handoff Carrier	La Poste / Chronopost depending on product.
Customs & Clearance Tips	EU VAT and customs declaration data affect release; delivery notices may require online payment.

Spain

EMS 6–12 business days; postal parcel 14–35 business days; average about 16–24 days.

View all details for Spain delivery

Primary Service Type	EMS, parcel post, registered mail.
Average Delivery Days	Average about 16–24 days.
Last-Mile Partner / Handoff Carrier	Correos.
Customs & Clearance Tips	Canary Islands, Ceuta and Melilla may have different customs handling from mainland Spain.

Italy

EMS 6–13 business days; postal parcel 14–40 business days; average about 17–26 days.

View all details for Italy delivery

Primary Service Type	EMS and international parcel.
Average Delivery Days	Average about 17–26 days.
Last-Mile Partner / Handoff Carrier	Poste Italiane / SDA for many postal items.
Customs & Clearance Tips	Customs data and VAT payment can be a major source of delivery gaps.

Netherlands

EMS 5–10 business days; postal parcel 10–28 business days; average about 12–18 days.

View all details for Netherlands delivery

Primary Service Type	EMS, parcel post, registered packet.
Average Delivery Days	Average about 12–18 days.
Last-Mile Partner / Handoff Carrier	PostNL.
Customs & Clearance Tips	EU import VAT data and consumer payment notices can influence handoff speed.

Japan

EMS 2–6 business days; postal parcel 6–18 business days; average about 6–10 days.

View all details for Japan delivery

Primary Service Type	EMS and international postal parcel.
Average Delivery Days	Average about 6–10 days.
Last-Mile Partner / Handoff Carrier	Japan Post.
Customs & Clearance Tips	Short-haul lane, but food, cosmetics, medicine and battery restrictions require care.

Australia

EMS 5–12 business days; postal parcel 12–35 business days; average about 14–23 days.

View all details for Australia delivery

Primary Service Type	EMS and postal parcel.
Average Delivery Days	Average about 14–23 days.
Last-Mile Partner / Handoff Carrier	Australia Post.
Customs & Clearance Tips	Biosecurity screening is strict for food, plant, animal and wooden goods.

Singapore

EMS 3–7 business days; postal parcel 7–20 business days; average about 8–13 days.

View all details for Singapore delivery

Primary Service Type	EMS and international parcel.
Average Delivery Days	Average about 8–13 days.
Last-Mile Partner / Handoff Carrier	Singapore Post.
Customs & Clearance Tips	Accurate contact number and tax declarations help consumer parcel clearance.

Hong Kong

EMS 3–7 business days; postal parcel 7–18 business days; average about 7–12 days.

View all details for Hong Kong delivery

Primary Service Type	EMS, parcel post, registered packet.
Average Delivery Days	Average about 7–12 days.
Last-Mile Partner / Handoff Carrier	Hongkong Post.
Customs & Clearance Tips	High parcel density may create short handoff gaps around peak shopping periods.

China Mainland

EMS 4–9 business days; postal parcel 8–25 business days; average about 10–16 days.

View all details for China Mainland delivery

Primary Service Type	EMS and postal parcel.
Average Delivery Days	Average about 10–16 days.
Last-Mile Partner / Handoff Carrier	China Post / EMS China for many postal handoffs.
Customs & Clearance Tips	Recipient ID, phone number, tariff category and commodity description affect clearance.

Thailand

EMS 4–9 business days; postal parcel 10–28 business days; average about 12–19 days.

View all details for Thailand delivery

Primary Service Type	EMS and postal parcel.
Average Delivery Days	Average about 12–19 days.
Last-Mile Partner / Handoff Carrier	Thailand Post.
Customs & Clearance Tips	Tax assessment and local phone contact can affect delivery appointment or pickup.

Malaysia

EMS 4–10 business days; postal parcel 10–28 business days; average about 12–20 days.

View all details for Malaysia delivery

Primary Service Type	EMS, parcel post, registered packet.
Average Delivery Days	Average about 12–20 days.
Last-Mile Partner / Handoff Carrier	Pos Malaysia.
Customs & Clearance Tips	Customs duty or sales tax notices should be handled through official postal or customs channels.

United Arab Emirates

EMS 5–11 business days; postal parcel 12–30 business days; average about 14–22 days.

View all details for United Arab Emirates delivery

Primary Service Type	EMS and postal parcel.
Average Delivery Days	Average about 14–22 days.
Last-Mile Partner / Handoff Carrier	Emirates Post or postal delivery partner.
Customs & Clearance Tips	Recipient Mobile DE DE DE DE DE DE DE DE number, Emirates ID where required and accurate invoice data reduce clearance friction.

Brazil

EMS 8–18 business days; postal parcel 20–60 business days; average about 25–40 days.

View all details for Brazil delivery

Primary Service Type	EMS and international postal parcel.
Average Delivery Days	Average about 25–40 days.
Last-Mile Partner / Handoff Carrier	Correios.
Customs & Clearance Tips	CPF or tax information, import charges and customs queues commonly drive long delays.

Mexico

EMS 7–15 business days; postal parcel 18–45 business days; average about 22–32 days.

View all details for Mexico delivery

Primary Service Type	EMS and postal parcel.
Average Delivery Days	Average about 22–32 days.
Last-Mile Partner / Handoff Carrier	Correos de México or EMS postal channel.
Customs & Clearance Tips	Import review and regional distribution can create scanning gaps after arrival.

Destination-country ranges above are planning estimates based on common postal lane behavior for Korea-origin international Parcels and EMS-like services. They are not official guarantees; actual results depend on acceptance date, service availability, customs release, prohibited-item screening, destination-post capacity and missed delivery handling.

Common Tracking Problems and Solutions

Most ePOST tracking problems come from one of four boundaries: the parcel has not been accepted, a partner has not handed it over, customs is holding it, or the last-mile carrier has a delivery issue.

Problem & Solution

Problem/status shown

Immediate action

Invalid number

Remove spaces, hyphens and copied punctuation; confirm the carrier tracking number with the sender.

View all details for invalid number

Likely cause	Order ID used instead of postal number, typo, wrong carrier or not yet registered.
Check first	Receipt, label, EMS waybill or marketplace shipping page.
When to escalate	Escalate to the seller if they cannot provide a carrier number after dispatch.
Who to contact	Sender or seller first; carrier only after a valid accepted number exists.

No tracking or label created only

Ask whether the parcel has been physically handed over; wait for the first acceptance scan.

View all details for no tracking

Likely cause	Electronic data exists but the item is still with sender, warehouse or pickup partner.
Check first	Dispatch date and pickup handoff confirmation.
When to escalate	If seller claims dispatch but no acceptance scan appears after a reasonable handling period.
Who to contact	Seller, sender or marketplace support.

Stuck in transit

Compare origin and destination tracking; check whether the last event is export, airline, customs or local delivery.

View all details for stuck in transit

Likely cause	Line-haul gap, missed scan, weekend, customs queue, remote destination or service disruption.
Check first	Latest scan location and whether it is before or after import.
When to escalate	After the official service guide or inquiry window for that product and destination is exceeded.
Who to contact	Sender for international inquiry; destination post if imported and out for delivery.

Customs hold

Watch for official tax, invoice or ID requests; do not pay through unofficial links.

View all details for customs hold

Likely cause	Tax assessment, restricted item review, missing invoice, undervaluation or recipient identification requirement.
Check first	Official customs or postal notice and seller invoice.
When to escalate	If customs requests remain unresolved or the destination post instructs you to provide documents.
Who to contact	Customs authority, destination post, sender or seller depending on the request.

Delivery failed or available for pickup

Follow the notice, arrange redelivery if offered, or collect with ID before the holding period ends.

View all details for failed delivery

Likely cause	No recipient, access issue, incomplete address, signature required or unpaid taxes.
Check first	Delivery notice, local post office location and required identification.
When to escalate	Immediately if address is wrong or the item may be returned.
Who to contact	Local delivery office or destination postal operator.

Delivered but not received

Check mailbox, parcel locker, reception, family members and neighbors, then request delivery details from the local carrier.

View all details for delivered but not received

Likely cause	Safe-place delivery, pickup by an authorized person, wrong unit, premature scan or misdelivery.
Check first	Delivery location, time, building mailroom, front desk and proof of delivery if available.
When to escalate	Escalate quickly if no one at the address has the item.
Who to contact	Local delivery carrier and sender or seller for investigation and refund options.

Lost, damaged or missing contents

Keep packaging, photos, invoice and tracking evidence; ask the sender to start the correct postal inquiry or claim.

View all details for lost or damaged shipments

Likely cause	Damage in transit, insufficient packaging, loss after last scan or customs inspection issue.
Check first	Service type, declared value, insurance, photos and official claim eligibility.
When to escalate	Within the official inquiry or claim window for the service; do not discard packaging.
Who to contact	Sender, seller and carrier claim channel; 17TRACK cannot approve compensation.

International Shipping, Customs and Carrier Handoffs

For international ePOST shipments, the tracking number may stay the same while physical custody changes from Korea Post to export processing, airline transport, destination exchange office, customs and the destination postal operator.

International Flow

Stage

What is happening

Origin acceptance

The postal operator accepts the item and creates the first physical custody scan.

View all details for origin acceptance

Physical custodian/responsible entity	Korea Post for Korea-origin items, or the foreign origin post for inbound items.
Typical tracking event	Accepted, received, posting or receipt at post office.
Can the tracking number change?	Usually no for UPU S10 postal numbers, but internal routing references may exist.
Normal visibility gap	Short gap between label creation and acceptance.
What the customer should do	Verify the sender has physically posted the parcel if no acceptance scan appears.

Export processing

The item is sorted for international dispatch and may undergo export security checks.

View all details for export processing

Physical custodian/responsible entity	Origin postal operator and export processing facility.
Typical tracking event	Arrival at outward office of exchange or dispatch from outward office of exchange.
Can the tracking number change?	Postal number normally stays the same; airline bag labels are internal.
Normal visibility gap	Several days can occur before airline uplift or destination arrival scans.
What the customer should do	Monitor and check official service alerts for lane disruptions.

Line-haul transport

The parcel travels by air or surface transport between postal exchange countries.

View all details for line-haul transport

Physical custodian/responsible entity	Airline, transport contractor and postal exchange networks.
Typical tracking event	Dispatch, departure, transport or no event until destination arrival.
Can the tracking number change?	Customer-facing S10 number usually remains unchanged.
Normal visibility gap	Visibility gap is common because bags may not be individually scanned in transit.
What the customer should do	Wait for destination-post arrival before assuming customs or delivery problems.

Import customs and destination exchange

The destination country receives, screens and clears the item before local delivery.

View all details for import customs

Physical custodian/responsible entity	Destination postal operator and customs authority.
Typical tracking event	Arrival at inward office of exchange, held by customs, released from customs.
Can the tracking number change?	Usually no for postal tracking, but a local delivery reference can be added.
Normal visibility gap	Customs and tax assessment can create unpredictable pauses.
What the customer should do	Respond only to official customs or postal notices and keep invoice evidence ready.

Last-mile delivery

The destination postal operator attempts delivery, pickup or return handling.

View all details for last-mile delivery

Physical custodian/responsible entity	Destination post or contracted last-mile delivery carrier.
Typical tracking event	Out for delivery, delivery attempted, available for pickup, delivered or returned.
Can the tracking number change?	The S10 number often remains searchable; some destination systems may display an additional local number.
Normal visibility gap	Local scans may appear after import sorting, especially during peak season.
What the customer should do	Use the destination post website for local delivery options after import scan appears.

Delivery Management and Post-shipment Options

Delivery management depends on the product, country and current custody stage. Once an international item is with a destination postal operator, the destination carrier usually controls redelivery, pickup and local delivery instructions.

Delivery Management

Option

Who can request

Redelivery or pickup after failed attempt

Recipient, where the local postal operator offers it.

View all details for redelivery or pickup

Eligibility	Available only after a failed delivery or pickup notice for eligible services.
Deadline/available stage	Before return-to-sender or holding-period expiry.
Fee	May vary by country and service; check the local carrier.
Guaranteed?	No; depends on local carrier rules and address access.
Official action link	Use the official ePOST or destination-post tracking page shown in tracking.

Address correction before posting

Sender or merchant.

View all details for address correction

Eligibility	Most reliable before the item is accepted or before the label is finalized.
Deadline/available stage	Before physical dispatch; after acceptance, rerouting options are limited.
Fee	Depends on seller policy and postal service conditions.
Guaranteed?	No once the item is already in transit.
Official action link	Contact the sender, merchant or posting post office.

Proof of delivery or receipt evidence

Sender, recipient or authorized claimant depending on service.

View all details for proof of delivery

Eligibility	Available for tracked, registered or signature-related services where evidence is captured.
Deadline/available stage	After a delivery or pickup event is recorded.
Fee	May depend on service and document request method.
Guaranteed?	Only if the service includes or supports proof data.
Official action link	Use official tracking or customer-service inquiry routes.

Lost, Damaged, Claims, Insurance and Refunds

A tracking inquiry, missing-item investigation, insurance claim, postage refund and ecommerce refund are different processes. For international postal items, the sender often has the strongest filing position because the sender purchased the service and holds the original mailing receipt.

Claims and Refunds

Process

Use when

Tracking inquiry

Use when scans stop, delivery is late or a handoff is unclear.

View all details for tracking inquiry

Who files	Sender, recipient or seller, depending on service and country.
Earliest/latest filing time	Use the current official inquiry windows for the selected service.
Required evidence	Tracking number, mailing date, sender and recipient address, service name and latest scan.
Possible outcome	Location update, delivery confirmation, request for more data or claim referral.
Official link	Official customer-service and tracking pages.

Damage or missing contents claim

Use when the parcel arrives damaged or contents are missing.

View all details for damage claim

Who files	Usually the sender or authorized claimant, depending on postal rules.
Earliest/latest filing time	Current official claim deadlines depend on product and destination; verify before filing.
Required evidence	Photos, packaging, contents, invoice, declared value, receipt and tracking record.
Possible outcome	Compensation, denial, inspection request or request for additional evidence.
Official link	Official postal claim or customer-service channel.

Ecommerce seller refund

Use when the purchase agreement, marketplace policy or seller guarantee applies.

View all details for ecommerce refund

Who files	Buyer requests from seller or marketplace; seller may separately claim from carrier.
Earliest/latest filing time	Marketplace dispute windows and seller policies apply.
Required evidence	Order ID, tracking number, delivery issue description, photos and communication records.
Possible outcome	Refund, replacement, denial or seller investigation.
Official link	Marketplace or seller support page, not 17TRACK.

Shipping Restrictions and Special Handling

Postal restrictions affect tracking because prohibited, restricted, hazardous or poorly declared goods can be stopped before export, held by customs, returned or disposed of under law. Always check the current official rules before mailing.

Shipping Restrictions

Customer Service

Contact the party that controls the current stage. The sender or seller handles pre-acceptance and purchase refunds; ePOST or Korea Post handles Korea postal events; customs handles clearance requirements; the destination postal operator handles local delivery after import.

Customer Service

Channel

Verified contact/link

Official tracking

ePOST delivery tracking

View all details for official tracking channel

Best for	Checking official postal events and confirming whether the item has been accepted or delivered.
Region/language	Korea-focused official service; Korean language pages are primary.
Hours and time zone	Online tracking is generally self-service; customer-support hours should be checked on the official site.
Information to prepare	Tracking number, sender name, recipient name, posting date and service type.
Important limitation	Tracking page cannot resolve customs taxes or seller refunds.

EMS Korea

EMS Korea official service

View all details for EMS Korea channel

Best for	International EMS service availability, tracking and EMS-specific inquiries.
Region/language	Korea-origin international EMS; Korean and selected English service pages may be available.
Hours and time zone	Check official EMS pages for current support availability.
Information to prepare	EMS number, posting receipt, destination country, contents description and declared value.
Important limitation	Destination customs and last-mile delivery are controlled by destination authorities and postal partners.

Post office locator

ePOST official website

View all details for post office locator

Best for	Finding local post office services, pickup locations and in-person posting support.
Region/language	Republic of Korea; Korean language support is primary.
Hours and time zone	Location-specific hours vary; verify before visiting.
Information to prepare	Tracking number, ID, delivery notice, address and phone number.
Important limitation	A local post office may not control an item still overseas or held by customs.

Ecommerce and Business Tracking

Merchants should separate consumer order tracking from carrier tracking. ePOST official tracking is useful for single Korea Post items, while 17TRACK API is better for multi-carrier ecommerce visibility, carrier recognition, standardized statuses and exception monitoring.

Developer/API Comparison

Option

Provider

Official consumer tracking

ePOST

View all details for official consumer tracking

Carrier coverage	Korea Post and postal items supported by official tracking.
Primary use	Single-shipment lookup and official event confirmation.
Authentication	Public webpage lookup; separate public tracking API authentication is not confirmed here.
Tracking/batch/webhook capability	Consumer page is not designed as a multi-carrier batch webhook system.
Current developer documentation	Current public official tracking API documentation not confirmed.
Migration/deprecation note	Do not copy legacy unofficial endpoints; use only current official developer documentation if granted.

Multi-carrier tracking API

17TRACK

View all details for 17TRACK API

Carrier coverage	Multi-carrier tracking coverage, including postal and ecommerce logistics carriers where supported.
Primary use	Bulk registration, normalized tracking visibility and WISMO support workflows.
Authentication	17token header with an API key.
Tracking/batch/webhook capability	API registration and tracking workflows are documented by 17TRACK; webhook use depends on the subscribed product and integration setup.
Current developer documentation	17TRACK API documentation
Migration/deprecation note	Use the current documented version and avoid older examples from third-party blogs.

FAQ

1. How do I track my ePOST package?

Enter the tracking number on the official ePOST tracking page or use 17TRACK when the shipment may involve international postal handoffs.

2. Where can I find the ePOST tracking number?

The tracking number is usually on the post office receipt, shipping label, EMS waybill, merchant shipping email or marketplace shipment page.

3. What does a tracking number look like?

International postal numbers often use the S10 pattern of two letters, nine digits and a country code such as EA ######### KR, while domestic identifiers may be numeric and service-dependent.

4. Why does ePOST show no tracking update?

No update usually means the item has not been physically accepted, is between scan points, is waiting for export or import processing, or is with a partner that has not sent a new event.

5. When will the first ePOST tracking event appear?

The first reliable event normally appears after physical acceptance by the postal network, not merely when the sender creates a label or order record.

6. How long does ePOST delivery take?

Delivery time depends on domestic or international service, destination, customs, cutoff time and local delivery conditions; published standards are not guarantees unless the service terms say so.

7. What should I do if ePOST delivery failed?

Follow the delivery notice, check pickup or redelivery instructions, bring required identification and act before the holding period ends.

8. What if ePOST says delivered but I did not receive it?

Check mailbox, parcel locker, reception, household members and neighbors first, then ask the local delivery carrier or sender for delivery details or proof where available.

9. How do I report a lost or damaged ePOST shipment?

Keep the packaging, photos, invoice, receipt and tracking number, then ask the sender or authorized claimant to start the official inquiry or claim process.

10. How do I contact ePOST customer service?

Use the official ePOST website, EMS Korea service pages or the local post office channel shown by tracking, and prepare the tracking number, posting date, addresses and service name.

11. Can ePOST track an inbound foreign postal number?

ePOST may show inbound tracking after Korea Post receives partner data or physical custody, but the number can still be issued by the foreign origin post.

12. Does an S10 number ending in KR mean ePOST issued it?

An S10 number ending in KR generally indicates Korea as the issuing postal country, but the exact service should be confirmed on the receipt or official tracking result.

13. What happens at an international exchange office for ePOST shipments?

An international exchange office sorts, dispatches, receives or transfers postal items between countries; it is not the same as final customs release or last-mile delivery.

14. Can the ePOST tracking number change after handoff?

UPU S10 postal numbers usually remain the customer-facing identifier, but a destination postal operator may add an internal local delivery reference.

15. Can businesses track ePOST shipments through an API?

A current public official ePOST tracking API is not confirmed here, but businesses can use the 17TRACK API for multi-carrier tracking workflows where supported.

16. Why does customs hold a international package?

Customs may hold a package for taxes, invoice verification, recipient ID, restricted goods review or inspection, and only customs or the authorized postal handling channel can resolve that requirement.

Tracking API

// 1. Official ePOST tracking API
// Current public official tracking API not confirmed.
// Use the official website for consumer tracking:
// https://service.epost.go.kr/iservice/usr/trace/usrtrc001k01.jsp

// 2. 17TRACK API
// Register a   tracking number.
// CARRIER_CODE could not be publicly confirmed here; keep CARRIER_CODE as a placeholder
// unless your 17TRACK carrier list or account documentation provides the exact code.

curl -X POST "https://api.17track.net/track/v2.4/register" \
  -H "17token: YourKey" \
  -H "Content-Type: application/json" \
  -d '[
    {
      "number": "TRACKING_NUMBER",
      "carrier": "CARRIER_CODE"
    }
  ]'