Thailand Post is the national postal operator of Thailand, providing postal, parcel and logistics services through a nationwide network of post offices, mail centers and delivery operations. Its roots extend to Thailand's first official postal services in the nineteenth century, while the present Thailand Post Company Limited was established in 2003 following the restructuring of the Communications Authority of Thailand.
For people sending goods within Thailand, one of the carrier's main options is Domestic EMS, an express service for urgent documents and packages. Thailand Post currently accepts Domestic EMS items weighing up to 30 kg, subject to its size conditions, and provides Track & Trace monitoring throughout the delivery process. The service is available through post offices across Thailand.
Thailand Post also offers economical and specialized delivery options. eCo-Post is a lower-cost domestic service for eligible items weighing up to 10 kg and includes shipment-status checking from origin to destination. Other services shown in Thailand Post's official tracking system include domestic registered mail and LogisPost, giving customers options for correspondence, smaller merchandise and larger shipments depending on their needs.
For recipients, package tracking is especially useful when waiting for online purchases or time-sensitive deliveries. Thailand Post records shipment events as an item is accepted, processed, transported and sent to its destination. These updates allow customers to Track a package without relying only on a delivery estimate and can help identify when a shipment has reached a delivery office or has already been delivered.
How to Track Thailand Post packages
To Track a Thailand Post package with 4Tracking, enter the tracking number in the tracking field and start the search. 4Tracking can show available Thailand Post shipment events on the same universal tracking platform used for packages carried by many other postal and logistics companies.
You can also use Thailand Post's official Track & Trace service. Enter the shipment number printed on the postal receipt or supplied by the sender. Thailand Post's tracking system supports services including Domestic EMS, domestic registered mail, eCo-Post, domestic LogisPost and several other eligible postal products.
Tracking normally begins after Thailand Post accepts the shipment and registers its barcode in the postal system. If an online store has provided a number but no Tracking information appears yet, confirm with the seller that the package has actually been handed to Thailand Post. The carrier's own guidance recommends asking the company or seller for the postal barcode when an online purchase sent by EMS has not arrived as expected.
Thailand Post tracking number formats
Thailand Post's official Track & Trace page asks customers to enter a 13-character shipment number. Official examples displayed by Thailand Post include EF582568151TH, EA666458151TH and RG453678925TH.
These examples follow a format of two letters, nine digits and the two-letter ending TH, giving 13 characters in total. Thailand Post uses different opening letters for different postal items, so it is better to copy the complete tracking number exactly rather than assume that every package must start with the same prefix.
For example, an identifier in the form EF582568151TH can be entered directly for package tracking. If the number is rejected, check every letter and digit carefully, especially characters that can look similar. Also make sure you are entering the postal shipment number rather than an online-shop order number, payment reference or receipt number that is unrelated to the parcel barcode.
Thailand Post delivery times within Thailand
Delivery time depends on the service and route. Thailand Post publishes specific standards for Domestic EMS shipments accepted before 16:00. Items accepted after that cut-off are treated for delivery-standard purposes as if they were posted on the following day.
For Domestic EMS sent between Bangkok and its metropolitan area, which includes Nonthaburi, Pathum Thani and Samut Prakan, the published standard is within 1 business day after posting. EMS shipments whose origin and destination are within the same geographical region also have a standard of 1 business day after posting.
Thailand Post also lists 1 business day for Domestic EMS moving between Bangkok or its metropolitan area and another region. For shipments moving between different regions outside the Bangkok metropolitan category, the standard is 2 business days after posting.
Some destinations require additional time. Thailand Post adds one business day for destinations in Mae Hong Son Province, Wiang Haeng District in Chiang Mai and Wiang Kaen District in Chiang Rai. Remote areas and islands may require an additional two business days. Emergency conditions or natural disasters can also cause delivery to take longer than the normal published standard.
These EMS examples should not automatically be applied to registered mail, eCo-Post, LogisPost or every other Thailand Post product. Different services can have different handling and delivery standards, so recipients should use Tracking together with the service information supplied when the item was posted.
How to contact Thailand Post about shipment issues
If package tracking has stopped updating, the expected delivery period has passed or you need help interpreting a shipment status, Thailand Post's main customer-service channel is the THP Contact Center 1545. The official contact page states that the center handles general information, shipment Tracking inquiries and service complaints.
The published hours for the 1545 contact center are 08:00–18:00 Monday through Friday and 09:00–17:00 on Saturdays, Sundays, national holidays and compensatory holidays. Thailand Post also provides an online inquiry form through its website where customers can submit their contact details and shipment-related questions for follow-up.
You can also ask for assistance at a Thailand Post office. If the package was purchased from an online shop or marketplace, contact the seller or sender as well. The sender normally has the original postal receipt and tracking number and can confirm when and where the package was accepted or assist with a formal shipment inquiry when necessary.
Frequently asked questions about Thailand Post package tracking issues
Why is my Thailand Post Tracking not updating?
A shipment may not show information immediately if it has not yet been accepted or registered in Thailand Post's system. Verify the 13-character tracking number and ask the sender whether the parcel has physically been handed over. If updates stop for an unusually long period or the published delivery standard has passed, contact THP Contact Center 1545.
What does a Thailand Post tracking number look like?
Thailand Post's official Track & Trace system uses 13-character shipment numbers. Examples published on the official tracking page include EF582568151TH, EA666458151TH and RG453678925TH. The opening letters can vary, so always use the complete number provided for your shipment.
Why does my Thailand Post tracking number end in TH?
The official examples issued by Thailand Post use 13-character identifiers ending in TH, such as EF582568151TH. Do not change or remove the ending when entering the number for package tracking.
How long does Domestic EMS take within Thailand?
Thailand Post's current standards specify one business day after posting for Bangkok metropolitan shipments, same-region shipments and shipments between Bangkok or its metropolitan area and another region. Cross-region shipments generally have a two-business-day standard. Remote areas and specified northern destinations can require additional business days.
Why is my Thailand Post EMS package later than the normal delivery standard?
Check whether the parcel was posted after the 16:00 cut-off, because Thailand Post treats later acceptance as posting on the following day for delivery-standard calculations. Remote locations, islands, emergencies and natural disasters can also extend delivery beyond the normal standard.
Can I Track eCo-Post and registered mail shipments?
Yes. Thailand Post's official tracking system lists domestic registered mail and eCo-Post among the services supported for shipment-status checking. Enter the valid postal tracking number on 4Tracking or through Thailand Post's Track & Trace service.
What should I do if an online purchase has no Thailand Post tracking information?
Contact the seller and ask them to confirm the Thailand Post barcode and whether the parcel has already been posted. Thailand Post's official guidance specifically recommends obtaining the 13-character barcode from the seller or company when checking an online purchase sent through its postal network.
Who should I contact if my Thailand Post package appears lost?
First review the latest Tracking events and verify the shipment number with the sender. You can then contact THP Contact Center at 1545, submit an inquiry through Thailand Post's official website or visit a post office. For purchases, also inform the seller or sender because they hold the original posting documentation and may need to take part in the inquiry.
Monthly Delivery Performance for Thailand Post – August 2026
Our comprehensive monthly delivery report for Thailand Post in August 2026 is based exclusively on shipments confirmed as delivered, detailing the fastest, average, and slowest transit times from origin to destination. Shipments still in transit are excluded to ensure accurate and reliable insights.
| From | To | Delivery Time |
|---|---|---|
 THAThailand |  UnknownUnknown |
|
 JPNJapan | THA Thailand |
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| THA Thailand | JPN Japan |
|
 KORSouth Korea | THA Thailand |
|
| THA Thailand |  TWNTaiwan |
|
| THA Thailand |  AUSAustralia |
|
 CHNChina | THA Thailand |
|
| THA Thailand |  SGPSingapore |
|
| THA Thailand |  GBRUnited Kingdom |
|
| THA Thailand | KOR South Korea |
|
| THA Thailand |  CANCanada |
|
| THA Thailand |  BGRBulgaria |
|
| THA Thailand |  SAUSaudi Arabia |
|
| THA Thailand |  HKGHong Kong |
|
| THA Thailand |  POLPoland |
|