Japan Post (Nippon Yubin Kabushiki Kaisha) is Japan's national postal operator, founded in its modern form in 2007 following the privatisation of Japan Post. With over 24,000 post offices nationwide, Japan Post is the world's largest postal network by number of outlets and handles over 18 billion pieces of mail annually. Yu-Pack domestic parcel service and EMS international service are trusted by millions of individuals and businesses in Japan and around the world. Track at japanpost.jp.
Track Japan Post Package
Track Japan Post parcels and registered letters worldwide. Get real-time status for EMS, Yu-Pack, and international airmail shipments from Japan.
Japan Post Tracking
Key facts about Japan Post
Japan Post uses UPU S10 format
2 letters + 8 digits + 1 check digit + 'JP' suffix.
EMS (Express Mail Service)
EMS (Express Mail Service) is Japan Post's fastest international service, reaching 120+ countries.
Yu-Pack is Japan's domestic
Yu-Pack is Japan's domestic parcel service with tracking at every scan point.
Japan Post delivers 365
Japan Post delivers 365 days a year, including Sundays and holidays (Yu-Pack).
Japan Post Tracking Statuses Explained
Use the last visible scan to decide whether to wait, track more closely, or escalate.
| Status | What it means | What to do next |
|---|---|---|
| Posting / Collection | The package has been posted at a Japan Post office or collected from the sender. | Monitor the next scan event. |
| En route | The package is moving to a sorting facility within Japan. | Monitor the next scan event. |
| Arrival at outward office of exchange | For international shipments, the package has arrived at Japan's export processing facility (outward office of exchange). | Monitor the next scan event. |
| Dispatch from outward office of exchange | The package has been cleared for international transport and has departed Japan's export office. | Monitor the next scan event. |
| Arrival at inward office of exchange | The package has arrived at the destination country's import processing facility. | Monitor the next scan event. |
| Item presented to import customs | Customs officials in the destination country have received the package for inspection. | Monitor the next scan event. |
Japan Post Tracking Number Formats
Identify your tracking number type before entering it into the search box above.
Japan Post domestic (Yu-Pack, etc.)
5226342241411 or 12-digit numeric
Domestic parcels use numeric-only tracking numbers, typically 11 digits.
character alphanumeric
2 uppercase letters + 9 digits + 'JP'
UPU S10 format. Common service prefixes: EN/EE (EMS), RR (Registered), LM/LX (SAL/airmail tracked), CP (parcels). CN prefix used by China Post items routed via Japan.
How to Track a Japan Post Package
Follow these steps to get real-time status on any Japan Post shipment.
Get your Japan Post tracking number from your shipping label or receipt
Open https://www.post.japanpost.jp/int/ems/delivery/index_en.html for international tracking
Go to https://www.post.japanpost.jp/int/ems/delivery/index_en.html for international tracking.
Enter the tracking number and select the origin country
View the delivery status and scan history
For EMS, you can also track on the destination country's postal website once the item arrives
Common Japan Post Tracking Problems
Expand each issue for the cause, what to do, and when to call Japan Post directly.
No tracking updates after dispatch from Japan
Cause
Once a package leaves Japan's outward office, Japan Post hands off to partner carriers abroad. Tracking updates depend on the destination country's postal service scanning the item.
What to do
Wait up to 5 business days for the first scan in the destination country. Check directly with the destination country's postal carrier if available.
Escalate when
If no update 15 business days after dispatch from Japan, contact Japan Post to initiate an inquiry.
Tracking number changes at border
Cause
Some destination country carriers assign a new tracking number when they receive the package from Japan Post, causing the Japan Post number to appear stale.
What to do
Contact the destination country's post office with the original Japan Post tracking number to obtain the local tracking reference.
Escalate when
Japan Post can investigate if requested via their inquiry form.
Package stuck 'in customs'
Cause
The package requires additional documentation, duties payment, or inspection by destination country customs.
What to do
Watch for a customs notification from the destination postal service. Provide documentation or pay duties as requested.
Escalate when
If held more than 10 business days with no customs notification, contact both Japan Post and the destination country's customs authority.
Website slow during peak seasons
Cause
High query volumes during holiday seasons and major sales events (e.g., Black Friday) can slow the Japan Post tracking portal.
What to do
Try tracking at off-peak hours. Use a third-party tracking aggregator as an alternative.
Escalate when
No escalation needed; this is a temporary system load issue.
Japan Post Shipping Services Compared
Compare Japan Post service tiers and their typical delivery windows side by side.
Service options
Yu-Pack
Domestic parcel delivery with 365-day service including Sundays
Everyday shipping 1-3 days
EMS (Express Mail Service)
International express to 120+ countries
Everyday shipping Transit times vary by route
Registered Mail
Domestic tracked letter service with signature
Everyday shipping Transit times vary by route
Click Post
Low-cost domestic tracked letter/small item service
Everyday shipping Transit times vary by route
International Airmail
Standard international letter and parcel (1-2 weeks)
Cross-border shipments 7-14 days
Japan Post Delivery Times by Service
Yu-Pack
domestic
1-3 business days
1-3 business days within Japan (depending on distance)
EMS to USA
2-5 business days
2-5 business days
EMS to Europe
2-5 business days
2-5 business days
EMS to Australia
3-6 business days
3-6 business days
International Airmail
7-14 business days
7-14 days
SAL (Economy)
Varies by route
2-6 weeks
Japan Post Tracking FAQs
Answers to the most frequently asked questions about Japan Post tracking and delivery.
01 How do I track a Japan Post EMS shipment?
Go to japanpost.jp/int/use/inquiry_en.html and enter the 13-character EMS tracking number (e.g., EW123456784JP). You can also track on the destination country's postal service website.
02 What does 'Dispatch' mean on Japan Post tracking?
Dispatch means the parcel has left Japan and is on its way to the destination country. The next update typically shows when it arrives at the destination's customs hub.
03 How long does Japan Post EMS take to reach the USA?
EMS from Japan to the USA typically takes 2-5 business days, though customs clearance may add 1-2 additional days.
04 What is Japan Post Yu-Pack?
Yu-Pack is Japan Post's domestic parcel service. It offers 1-3 day delivery within Japan, including Sundays and holidays, with full tracking.
05 Why is my Japan Post tracking not updating internationally?
Once an EMS item leaves Japan, tracking updates depend on the destination country's postal service. Some countries update tracking infrequently. Check the destination postal website as well.
06 How do I pick up an undelivered Japan Post parcel?
Japan Post leaves a notice card with a pickup slip. Bring the card and your ID to the post office listed on the card within 7 days.
Get Help from Japan Post
If the latest scan still does not make sense, contact Japan Post directly with your tracking number ready.
Support hours: Mon-Fri 8 AM-9 PM, Sat/Sun/holiday 9 AM-6 PM JST
About Japan Post
Japan Post has a history dating back to 1871 when Japan established its modern postal system. The privatisation of Japan Post began in 2007, creating Japan Post Holdings as a stock company with Japan Post, Japan Post Bank, and Japan Post Insurance as subsidiaries. Japan Post Bank (yucho) and Japan Post Insurance (kampo) make Japan Post one of Japan's largest financial conglomerates. The postal network of 24,000+ offices makes Japan Post a critical social infrastructure provider in Japan.
- Official site
- http://www.post.japanpost.jp/index.html
- Track packages
- https://trackings.post.japanpost.jp/services/srv/search/
- Support portal
- Open support →
- Network type
- National Post
- Country
- JP
- Region
- asia
- Coverage
- Japan Post delivers to all addresses in Japan, including remote islands. International EMS service covers 120+ countries, airmail covers 190+ countries, and SAL/surface covers select destinations.
- Support hours
- Mon-Fri 8 AM-9 PM, Sat/Sun/holiday 9 AM-6 PM JST
- Last verified
- Apr 6, 2026
Referenced sources