Japan Market Insights
LINE Marketing in Japan: Build a Useful Relationship After the Add

Illustrative image generated with AI.
Start with the reason someone added you
A customer adds your business on LINE. That does not necessarily mean they want frequent sales messages. They may want a coupon for today, a convenient booking link or an answer to one question.
For foreign businesses entering Japan, understanding that initial expectation is more useful than treating every new contact as an enthusiastic fan. The practical question is: what should become easier for this person after adding the account?
What LINE and LINE Official Accounts do
LINE is an app used for messaging, calls and other services. Businesses can use LINE Official Accounts to communicate with people who add them as “friends.”
Available functions include message delivery, chat, coupons, shop cards and a rich menu at the bottom of the chat screen. The menu can provide access to external pages such as a website or booking service.
These are capabilities, not a complete customer strategy. Personalized messages based on purchase history require the appropriate data, setup and operations; opening an account does not create that system automatically.
You are communicating inside a messaging environment
Consider someone opening their phone between tasks to check personal messages. A business update appears in that same app. Their attention and expectations may differ from the moment when they deliberately browse a social feed.
Notifications and habits vary, so there is no single experience shared by all users. Still, the comparison encourages a useful discipline: ask what job each message does for the recipient.
A message can help someone choose a product, use something they own or find a practical answer. A succession of generic “Buy now” requests may provide little reason to keep opening the conversation.
Keep the promise made at sign-up
If someone adds the account for an in-store coupon, explain what they can expect afterward. Will they receive new-product announcements, care tips or help with appointments?
Make the opening message consistent with that explanation. Avoid using a narrow incentive to introduce an unrelated stream of promotion.
For a product that needs a little instruction, a short usage guide may be useful after purchase. For a shop, clear opening hours, directions or a booking destination may be a better first task. Choose one useful job before activating every feature.
Support the conversation you invite
A Japanese-language chat entry point creates an expectation about what happens next. If a customer asks whether an order can arrive by the weekend, an automatic product list does not resolve the question.
Explain the hours you can respond, a realistic reply timeframe and any alternative contact route. You do not need to promise immediate support at all times.
Plan who will handle questions and how they will resolve them. Good wording at the entrance is weakened if the conversation cannot be completed afterward.
Measure usefulness and decide whether LINE is a priority
People can block an Official Account. A block does not reveal one universal reason: messages may be too frequent, irrelevant, or simply no longer needed.
Look beyond the total friend count. Review engagement and whether customers complete the intended action, such as a booking or purchase. Compare changes with the content and timing of your messages without assuming that one movement proves a cause.
LINE need not be every foreign company’s first investment. Ask whether you have a reason to stay in contact, an entry point for attracting relevant users and the capacity to operate in Japanese. A business-to-business buying process may be better served by email or another channel.
Start with a real task that becomes easier. Earn the next interaction by making the current one useful.
About the author
Junko Adachi is the founder and CEO of Anatano PR, a marketing and branding consultancy in Japan. Before founding the company, she worked in marketing at Gucci, Chaumet (part of LVMH) and Yellowfin Japan. She now supports B2C and B2B businesses with marketing and brand development.
Discuss your Japan marketing
Looking for practical support with positioning, customer communication or marketing in Japan? Email info@anatano-pr.com with your company website, product and current challenge. Learn more about Anatano PR and our Japan market support.
Further reading
For the website foundations behind these ideas, see Why Your Japanese Website Isn’t Winning Customers. Explore more Japan Market Insights.