Compliance · Japan
RCS Compliance in Japan
A practical overview of the rules that affect RCS messaging and marketing in Japan, with a checklist before you launch.
Key Rules for RCS in Japan
RCS business messaging availability in Japan depends on operator and device support, so we confirm coverage before planning campaigns and keep SMS as a fallback; the same consent rules that apply to SMS apply to RCS.
RCS support differs widely between Asian markets and operators, so coverage should be confirmed for each country before planning a campaign.
Data Protection
The Act on the Protection of Personal Information (APPI), supervised by the Personal Information Protection Commission, applies, including rules on transfers of data outside Japan.
Keep a record of how each contact was collected, what they agreed to and when, and make it easy for them to withdraw consent.
Practical Checklist
- Verify your brand with the RCS provider and keep the sender profile accurate.
- Confirm device and operator coverage for the country and configure SMS fallback.
- Apply the same consent rules you use for SMS marketing to promotional RCS.
- Keep suggested replies meaningful and do not hide key terms inside images.
- Track opt-outs and suppress those numbers on both RCS and SMS.
Contact data
Format numbers in international E.164 format with the +81 country code, remove duplicates and invalid numbers, and keep consent records linked to each number.
Timing and Language
Japan follows the Asia/Tokyo time zone (UTC+09:00 in October 2026). The usual working week is Monday to Friday. Schedule RCS campaigns for the recipient's local daytime hours, avoid public holidays and religious observances that matter to your audience, and convert send times from IST before scheduling.
In Tokyo, customers commonly use Japanese, with English. Messages in the customer's preferred language usually perform better, but check how local-language text affects character counts (for SMS) and template approval (for WhatsApp).
Digital Habits and Channels in Japan
Japan has very high smartphone use, and LINE is the dominant messaging app, with LINE Official Accounts the standard way for brands to message customers. SMS is used mainly for authentication and reservations, and email newsletters remain more common for marketing than in many countries.
Credit cards, IC cards such as Suica and QR payments such as PayPay are common, and convenience store payment is popular for online orders. Japanese customers expect polite, precise and carefully proofread communication. New Year, Golden Week, Obon, the summer and winter bonus seasons and White Day are key commercial moments.
Japan is one of the world's largest economies, with car makers such as Toyota and Honda, electronics, machinery and a large domestic retail market, and an ageing population that is increasing demand for healthcare and home services. The consumption tax is 10%, with 8% on food. Japanese consumers expect polite, formal language and precise information, and many still use email and LINE more than SMS for marketing. The Act on Regulation of Transmission of Specified Electronic Mail requires opt-in consent and sender details for marketing messages.
Regulators, Registers and Practical Rules in Japan
Japan's Act on Specified Electronic Mail requires opt-in.
Japan's Act on Regulation of Transmission of Specified Electronic Mail requires opt-in consent for advertising email and SMS, with sender details and an opt-out in each message. LINE is the dominant messaging app, and the main operators are NTT docomo, KDDI (au), SoftBank and Rakuten Mobile.
General guidance, not legal advice. Check current rules with the regulator or a local adviser before launch.
Advertising Alongside Messaging
Advertising follows the Act against Unjustifiable Premiums and Misleading Representations; since October 2023, undisclosed stealth marketing is treated as a misleading representation.
This guide is general information, not legal advice, and reflects our understanding as of October 2026. Rules change, so we check current requirements for Japan before every launch.
Planning RCS campaigns for Japan?
We check the rules, set up sender requirements and run compliant campaigns.
RCS in Japan: FAQs
Do I need consent to send marketing RCS messages in Japan?
In most cases, yes, or at least an existing customer relationship and a clear opt-out. RCS business messaging availability in Japan depends on operator and device support, so we confirm coverage before planning campaigns and keep SMS as a fallback; the same consent rules that apply to SMS apply to RCS.
Is RCS available in Japan?
RCS business messaging availability in Japan depends on operator and device support, so we confirm coverage before planning campaigns and keep SMS as a fallback; the same consent rules that apply to SMS apply to RCS.
Can DND Teams run RCS campaigns to Japan?
Yes. We are based in Bhopal, India, and run campaigns for international markets remotely, after checking the current rules, sender requirements and coverage for Japan.
Is this legal advice?
No. This guide is general information to help you plan. Regulations change and their application depends on your business, so take local legal advice for significant campaigns.
Related Guides and Services
Other channels in Japan
RCS rules in nearby markets
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