Transporting Valuables and Important Cargo
This service provides the lawful, safe, and reliable delivery of correspondence arising from commercial transactions.
Specific mail delivery service (BSP1, BSP3)
Specific mail delivery service (BSP1, BSP3)
Service Features
For Customers with These Need
- I want to transport correspondence legally and safely.
- I'd like to confirm once the delivery is complete.
- We want to deliver it the next day with complete security measures in place.
- I'm not sure if what I'm sending qualifies as a letter.
Track and manage with a double-check system combining "IT-based management" and "human-based management"!
Contact Us
We accept inquiries regarding designated postal mail services (BSP1, BSP3).
Download materials
We provide details about our services and case studies.
Service details, steps to use the service, and important notes.
Service Details
This service ensures the safe and secure delivery of business letters (correspondence) such as invoices and certificates.
Companies that prioritize compliance management
It is an effective means of transportation for our customers.
- * We offer two service lines, BSP1 (Service No. 1) and BSP3 (Service No. 3), to provide transportation options tailored to your needs.
What is a "specified postal delivery service"?
The Designated Mail Delivery Service is a business that provides high value-added services related to the transportation of mail, utilizing the ingenuity and creativity of private businesses. Our company obtained business licenses (license number 18) from the Ministry of Internal Affairs and Communications for the Designated Mail Delivery Service (Service No. 1) in January 2004 and for the Designated Mail Delivery Service (Service No. 3) in December 2004.
| Specialized mail delivery service [Service No. 1] | This service transports correspondence where the sum of the three dimensions of a single package exceeds 73 cm, or where the weight of a single package exceeds 4 kg. | ![Specialized mail delivery service [Service No. 1]](/jp/ja/sites/country/jp/files/2026-10/8c8985925b1eebb3115151f4114f8d3ea5bfb9a4e1628a2aec8d25ca59f79300/344-01.png) |
|---|---|---|
| Specialized mail delivery service [Service No. 3] | This service delivers correspondence where the shipping fee per package exceeds 800 yen (including tax). | ![Specialized mail delivery service [Service No. 3]](/jp/ja/sites/country/jp/files/2026-10/e65978681794b79c71eaf8607d17ab12a80686c4e4bc22ff3c890b7bebe81caf/344-02.png) |
| Specialized mail delivery service (BSP1) | Specialized mail delivery service (BSP3) | |
|---|---|---|
| Size and weight | Mail items where the sum of the three dimensions of a single package exceeds 73 cm but is within 170 cm, or where the weight of a single package exceeds 4 kg but is within 30 kg. | One item, up to 30kg, total dimensions (length + width + height) must be within 170cm. |
| Delivery date of your package | The day after the shipping date
| |
| Fee | Shipping costs vary depending on the delivery route and weight (size). | |
| In the case of correspondence containing personal information | We will handle this via our premium postal service. | |
| Service area | Nationwide in Japan (area limited)
| |
A letter (a document used for communication) is defined as "a document that expresses the sender's intentions or notifies (Note 2) facts (Note 3) to a specific recipient (Note 1)."
(Note 1) "Specific recipient" refers to a person specifically designated by the sender as the person who will receive the expression of intent or notification of facts.
(Note 2) "To express an intention or to notify a fact" means to express the sender's thoughts or feelings, or to convey facts such as events that have actually occurred or exist.
(Note 3) "Document" refers to paper or other tangible objects on which information that can be perceived by the senses, such as characters, symbols, and codes, is written (sending electronic records does not constitute delivery of correspondence).
Service Flow
Specialized transport materials
We offer materials tailored to your needs, such as the specially designed security cardboard box "BSP3Box" (patented), "BSP3Bag," and "BSP1 dedicated envelope."
| kinds | shape | size |
|---|---|---|
| BSP1 dedicated envelope |  | 320 x 100 x 340 mm (H) |
| BSP 3 Box SS size |  | 310 x 242 x 18 mm (H) |
| BSP 3 Box Size S |  * The photo shows size M. | 360 x 225 x 53 mm (H) |
| BSP 3 Box Size M | 360 x 255 x 106 mm (H) | |
| BSP 3 Box L size |  * Photo shows size L | 330 x 260 x 320 mm (H) |
| BSP 3 Box LL size | 510 x 330 x 230 mm (H) | |
| BSP 3 Pack |  | 380×160×450mm (H) (maximum thickness) |
Optional Services
In-hours service
Time-limited service is available (8 AM to 9 AM, 8 AM to 10 AM). *Delivery is only available to areas designated by our company as our delivery area. For details, please contact your nearest sales office.
Invoice consolidation & automated mailing service
This service allows us to bill your head office (or any other designated department) for all fares incurred at our branches and sales offices nationwide.
- * It will be necessary to agree on the method of billing and other details in advance.
Examples of documents that qualify as correspondence
| General related | Delivery slips, receipts, quotations, application forms, application forms, declaration forms, request forms, contracts, inquiry forms, response forms, consent forms, medical claim forms (medical fee statements, etc.), letters of recommendation, purchase orders, pension-related notices and declarations, tax returns, salary payment reports. |
|---|---|
| Meeting convocation notices and similar documents | Wedding invitations, business reports, etc. |
| Permits and licenses | Licenses, certificates, awards
|
| Certificates | Certificate of seal impression, tax payment certificate, family register transcript, copy of resident registration certificate, health insurance card, company registration transcript, vehicle registration certificate, resume, pay slip, industrial waste management slip, insurance policy, bank transfer certificate, export certificate, health examination result notification, fire equipment inspection report, survey report, inspection results report, product quality certificate, and documents notifying the results of such inspections, surveys, and tests. |
| Direct mail | Documents that include the recipient's name or documents that contain wording that clearly indicates they are intended for a specific recipient, such as in a purchase or use relationship, or a contractual relationship. |
◇ indicates cases judged in individual consultations at the Ministry of Internal Affairs and Communications.
- * Excerpted from the "Guidelines for Correspondence" (Ministry of Internal Affairs and Communications website), updated April 1, 2014.
FAQ
Contact Us
We accept inquiries regarding designated postal mail services (BSP1, BSP3).
Download materials
We provide details about our services and case studies.