LINE Official Account Marketing in Japan: Setup, Messaging and Costs

This matters because email open rates in Japan can be weak, and social posts get buried. LINE sits on almost every phone. If you have ever struggled to reach past customers or to turn one-time buyers into regulars, LINE is the channel to fix that. Here is how to set it up, what it costs and what to send.

Key Takeaways

• LY Corporation, which runs LINE, reports about 100 million monthly users in Japan as of the end of March 2026, based on its own figures.
• A LINE Official Account in Japan has three plans: Communication (free, 200 messages), Light (5,000 yen, 5,000 messages) and Standard (15,000 yen, 30,000 messages), with prices excluding tax.
• From October 1, 2026, extra messages on the Standard plan cost 3 yen each up to 200,000 a month and 2.5 yen each beyond that.
• Chat replies, auto-replies and greeting messages do not count toward your message limit. Broadcasts do.
• Grow friends with in-store QR codes, website buttons, packaging inserts and ads, then reward them with coupons and useful content.
• Japan has rules on stealth marketing, data privacy and online selling, so check compliance with a local professional.

What Is a LINE Official Account?

LINE is to Japan what WhatsApp is to many other countries, but it does much more. People use it to chat, call, read news, pay and follow brands. A LINE Official Account (sometimes still called by its old name, LINE@) is the business version.

When a customer adds your account as a friend, you can:

• Send broadcast messages to all friends or to selected groups
• Chat one-on-one to answer questions
• Show a rich menu, a fixed button panel at the bottom of the chat that links to your shop, booking page or FAQs
• Issue coupons and digital shop cards (loyalty stamp cards)
• Run step messages, an automated sequence that goes out over days after someone adds you
• Run surveys and offer membership features

LY Corporation's own business site says LINE reaches around 100 million monthly users, based on internal data as of March 2026. That reach is why LINE is often the first channel Japanese shoppers expect a brand to offer after its website.

Why LINE Matters for Foreign Brands in Japan

Japanese consumers are loyal once they trust a brand, but earning that trust is slow. They read reviews, compare carefully and expect polite, accurate communication. LINE helps in three ways.

It feels personal. A message on LINE sits next to messages from friends and family. A warm, well-timed note feels more like a shop owner checking in than an ad.

It drives repeat purchases. Restock reminders, member coupons and new product news bring past buyers back, which is where most profit lives.

It supports service. Many customers prefer to ask a quick question in chat rather than call or email. Fast, polite answers build the trust Japan rewards.

If you are still figuring out your overall approach, our guide on how to market a foreign brand in Japan covers culture, channels and trust in more depth.

How to Set Up a LINE Official Account in Japan

Setup is free and fairly quick. The work is in getting it right for Japanese customers.

Step 1: Create the account

1. Create a LINE Business ID using an email address or an existing LINE account.
2. Open LINE Official Account Manager, the web dashboard, and create a new account.
3. Choose Japan as the service country, since plans, prices and some features differ by country. LINE accounts in Thailand or Taiwan, for example, follow their own local pricing.
4. Enter your business name, category and contact details.

Step 2: Decide on verification

There are three account types:

• Unverified account. Anyone can open one, individual or company. Most core features work.
• Verified account. After LINE reviews your business, you get a badge (green in Japan) and your account can appear in LINE search. This builds trust.
• Premium account. A special status that LINE grants to selected accounts, typically larger brands. You cannot simply buy it.

Verification review looks at your business details and website. Foreign brands without a Japanese address, website or local partner may find the review harder, so many work through a Japanese entity, distributor or agency. Review criteria change, so check LINE's current guidelines before you apply.

Step 3: Build the profile in natural Japanese

• A clear profile image (your logo) and cover image
• A short, polite description of who you are and what friends receive
• Business hours, website and shop links
• A greeting message that thanks new friends and offers a welcome coupon or useful tip

Write all of this in natural Japanese. Machine translation reads as careless in Japan, and careless reads as untrustworthy. Our copy is written by native speakers for exactly this reason.

Step 4: Set up the rich menu

The rich menu is your always-on storefront inside the chat. A simple six-button layout works well:

1. Shop now
2. Member coupon
3. New arrivals
4. How to use (guides or videos)
5. FAQ and shipping
6. Chat with us

Step 5: Connect your systems

If you want automation, connect your account to the Messaging API. This lets your online store, CRM or booking system send personalized messages, such as order confirmations or restock alerts. It is also how AI chat assistants plug into LINE.

LINE Official Account Japan Pricing in 2026

Here is the Japanese pricing as of late 2026, based on LY Corporation's published plans. Prices exclude tax and there is no setup fee.

• Communication plan: 0 yen per month, 200 free messages. You cannot send more once you hit the limit.
• Light plan: 5,000 yen per month, 5,000 messages. You cannot buy extra messages.
• Standard plan: 15,000 yen per month, 30,000 messages. You can send extra messages for a fee.

From October 1, 2026, LY Corporation changed the extra message price on the Standard plan to 3 yen per message for up to 200,000 extra messages a month, and 2.5 yen per message beyond that. The company also announced a new monthly cap on extra messages, with higher limits available through its certified sales partners. A separate price change for Premium IDs (a paid option that gives you a custom account ID) was announced for December 2026.

LINE changes its pricing from time to time, so always check the official plan page before you budget.

How messages are counted

This trips up many brands. Your message count equals the number of messages sent multiplied by the number of people who receive them. One broadcast to 10,000 friends uses 10,000 messages.

What counts:

• Broadcasts to all friends
• Segmented messages to selected groups
• Step messages
• Push, multicast, broadcast and narrowcast sends through the Messaging API

What does not count:

• One-on-one chat replies
• Auto-replies
• Greeting messages to new friends
• Reply messages through the Messaging API

Which plan should you pick?

A simple rule: count how many messages you will send each month (friends times messages per friend). Up to 200, use the free plan. Up to 5,000, use Light. Above that, use Standard. For example, 3,000 friends who get four broadcasts a month equals 12,000 messages, so you need the Standard plan. Use segmentation to send fewer, more relevant messages and keep costs down.

How to Grow LINE Friends

An account with no friends sends nothing. Growing friends is the real work.

Owned channels

• Add a "Add us on LINE" button to your website, product pages and order confirmation page
• Print a QR code on packaging, receipts and shipping inserts with a clear reason to add you, like "10% off your next order"
• Mention LINE at pop-up shops, events and in-store displays

Marketplace and partner channels

If you sell on Rakuten or Amazon Japan, inserts in your packages can bring buyers into your own LINE list, which you control. Check each marketplace's rules on inserts and off-platform contact first. Our comparison of Rakuten vs Amazon Japan covers how each platform works for foreign sellers.

Paid friend ads

LY Corporation's ad platform offers ad formats designed to add friends to your account, often billed per new friend. This can be a fast way to build a list, but the quality of friends matters. Target people similar to your buyers, not everyone.

Give a real reason to stay

People block accounts that spam them. Before you send any message, ask: "Would I want this?" Members-only coupons, early access, restock alerts and useful tips keep blocks low.

What to Send: Messaging That Works in Japan

Japanese customers expect polite, clear and useful messages. Here is a monthly rhythm many brands use:

1. Welcome message (automatic): Thanks, a welcome coupon and a link to the rich menu.
2. Step messages over the first two weeks: How to use the product, customer stories you have permission to share, and a reminder of the welcome coupon.
3. Two to four broadcasts a month: New arrivals, seasonal campaigns, limited offers.
4. Triggered messages: Restock alerts, order updates and review requests through the Messaging API.

Sample broadcast structure

• A short seasonal greeting (Japan values seasonal touches, such as cherry blossom season or year-end thanks)
• One clear message, such as a new product or limited coupon
• One image or card-type message
• One button with a clear action

Timing tips

• Avoid very early mornings and late nights
• Align campaigns with Japanese seasons and events like Golden Week, summer, Black Friday and year-end
• Test send times with small segments before sending to everyone

Using AI and Automation on LINE

Replying to every chat by hand gets hard as you grow, especially across time zones. That is where automation helps.

Through the Messaging API, an AI assistant can answer common questions in natural Japanese, recommend products, check order status and hand tricky cases to a human. Our AI implementation service sets up a multilingual AI employee that works across LINE, WhatsApp, Zalo and WeChat, so customers get fast, polite answers at any hour while your team handles the conversations that need a person.

A few rules for AI on LINE:

• Keep the tone polite and on brand
• Always offer a way to reach a human
• Never let AI make claims about health, safety or results that your product cannot back up
• Review conversations weekly to improve answers

Rules and Compliance to Know

Japan has clear rules that affect LINE marketing. This is not legal advice, and laws change, so confirm the details with a Japanese legal professional.

• Stealth marketing rules. Since October 1, 2023, Japan's rules on misleading representations treat advertising that hides the fact it is an ad (often called "stealth marketing") as a violation. If you pay creators or partners to promote your LINE account or products, the ad must be clearly disclosed.
• Misleading claims. Japan regulates exaggerated or misleading claims about quality and price, including fake "limited time" discounts.
• Personal data. Japan's Act on the Protection of Personal Information governs how you collect and use customer data, including data passed through the Messaging API. Be clear about what you collect and why.
• Online selling disclosures. If you sell online to Japanese consumers, Japan's Act on Specified Commercial Transactions requires certain seller information and terms to be shown.
• Health and beauty claims. Cosmetics, supplements and health products face strict rules on what you can say.

Common Mistakes Foreign Brands Make on LINE

1. Treating LINE like email blasts. Too many messages lead to blocks. Fewer, better messages win.
2. Machine translated Japanese. It damages trust instantly.
3. No reason to add you. "Follow us" is not enough. Offer a coupon, early access or useful content.
4. Ignoring the chat. Slow or missing replies feel rude in Japan.
5. Not using segments. Sending everything to everyone wastes messages and money.
6. Forgetting the rich menu. It is free, always visible and drives clicks every day.

Get Your LINE Official Account Working for You

A LINE Official Account in Japan can become your most loyal sales channel, but only if it is set up in natural Japanese, grown with real incentives and run with polite, useful messages. Our team handles setup, verification support, rich menus, message plans and AI chat across LINE, so you are not guessing in a market that rewards care.

If you want a LINE plan built for your brand, book a free strategy call and we will map out your setup, your first messages and how to grow your friend list in Japan.