Category: Delivery & Postal

Japan Post: Official SMS Senders & Numbers - Is That SMS Genuine?

Sends SMS only in limited cases

Do they send SMS? (Official statements)

Japan Post's official notice lists messages in the group's name as suspicious, with one exception: SMS sent by Japan Post Trading Service Co. when a parcel could not be delivered.

Officially published senders

No official sender (number or display name) list is published.

Even for the exception (Japan Post Trading Service SMS), no official sender-number list is published.

Conversely, a message showing a listed name or number is NOT necessarily genuine: SMS sender displays can be spoofed. The safest approach is to avoid links in the message and check directly via the official app or a bookmarked official website.

Key points from official statements

A standing official warning covers suspicious emails/SMS in Japan Post's name, with the sole stated exception of absence-notice SMS from Japan Post Trading Service Co.
Japan Post officially states it does not use ".net" or ".top" in its website URLs.
Japan Post states it has deployed SPF and DKIM email domain authentication.

Legitimate domains (confirmed on the source pages)

japanpost.jp

Have a suspicious SMS at hand? Paste the message to instantly check it for common scam patterns.

Check it with the SMS Scam Checker

Sources (official pages)

Japan Post: Beware of suspicious emails and fake websites impersonating Japan Post

Primary sources verified on: 2026-08-02

Other organizations in this category

Yamato Transport Sagawa Express

How to use this list correctly (disclaimer)

A sender not on this list is NOT necessarily a scam. Companies may add or change senders without notice, and legitimate SMS may arrive from numbers or names that are not officially published.

The content reflects what was published on the official pages as of each entry's verification date. Always check the linked official pages for the latest information.