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LINE Customer Service: The LINE Customer Support Guide [July 2023]

Román Filgueira
August 18, 2022

Are your customers LINE users? If so, you probably want to use LINE for customer service. In this article, you’ll learn all you need to know about using LINE as a support channel. We’ll also introduce you to some features that will elevate your LINE customer support to the next level.

Traditional Customer Service Channels vs LINE Customer Service

Traditionally, companies have been doing customer support over email, website chat and phone calls. Unfortunately, these channels come with some limitations, which we will discuss below.

Limitations of Traditional Customer Service Channels

Agents need contact data and context to provide a good service, but traditional support channels don’t offer them a way to overview key information like conversation history. For example, phone calls don’t leave a transcript when the conversation ends.

Website chat isn’t better, since agents can’t trace customers once they exit the website. Hence, support agents who use website chat and phone calls often need to ask the same questions repeatedly if a customer gets in touch again or the case is escalated.

Email is not an ideal channel for support: It is slow, formal and prone to scattered conversations. This is often caused by simple mistakes like customers sending inquiries from different emails or an agent forgetting to CC another decision-maker.

This image shows the limitations of traditional support channels: Lack of conversation history overview, scattered conversations and slow resolution times
Problems with using traditional support channels

But there’s more. Have you ever waited for an email update for ages, hoping for a solution to your problem? What about never-ending waits over the phone?

Traditional support channels are infamous for not setting response time expectations with customers, as they generally don’t provide information on how many people are ahead in the queue or the status of their inquiry, which frustrate customers.

As you might expect, email, website chat and phone calls are not the best way to go for businesses that prioritize quick resolution times. For responsive and efficient customer support, we recommend using an instant messaging channel like LINE.

LINE Customer Service Benefits

LINE is a regional messaging app in Asia with 182 million monthly active users. Its main markets are Japan, Thailand, Taiwan and Indonesia. As a customer service channel, it has some clear advantages over the traditional channels.

For a start, LINE gives support agents access to contacts’ conversation history in a messaging inbox. Thanks to this, they avoid repetitive questions, can make informed decisions and achieve quicker resolution times.

Messaging inboxes let agents and customers leave the conversation and return whenever they want without losing contact or conversation data. This allows for quick interactions with an added benefit both sides can communicate at their desired pace.

This image shows four reasons for LINE app customer service: You have access to chat history, both ends chat at their own pace, faster resolution times and agents can manage response time expectations
Four reasons to provide LINE customer support

Lastly, businesses can manage response time expectations by setting up automated replies when there aren’t agents available.

You shouldn’t use a regular LINE account for LINE customer support, as it is not designed for businesses with multiple support teams. Instead, we recommend a LINE Official Account, which is LINE’s business solution for customer communication.

LINE Customer Service: What You Need to Know

LINE Official Accounts are fairly different from LINE user accounts as they involve different features, messaging rules and monetization. For that reason, it’s important to get familiar with the four concepts explained in this section.

LINE Official Account Premium ID

The last thing you want is to make it hard for customers to find you in the LINE app when they need assistance. But by default, LINE Official Accounts are only searchable in the app via user ID, which is a random string of numbers and characters.

This image shows what you need to know about LINE Official Account Premium ID for LINE support.
What you should know about LINE Premium ID

To fix this, you should either verify your business or pay 12 USD / year to use a LINE Premium ID, like your company name. Therefore, your business will be easily searchable in the LINE app so customers can reach out whenever they have inquiries.

LINE Official Account Subscription Plans

Since your support team will be sending and receiving multiple LINE messages, you should know what the LINE Official Account subscription plans are to determine which one suits your needs and budget.

After creating your LINE Official Account, you’ll be put in the Free subscription plan with a monthly messaging limit of 500 messages. This may be enough for small businesses that don’t handle many monthly support inquiries.

This image shows the different plans that companies can buy for their LINE app customer service..
Choose a plan according to your LINE customer support team

Yet, businesses can’t buy additional messages while on the free plan. To circumvent this limitation, medium to large-size businesses should consider the Light or Standard subscription plans which allow you to exceed your monthly limit at additional costs.

LINE Official Account 1:1 Messaging

LINE doesn’t allow businesses to import contact lists to LINE Official Accounts. Instead, contacts must add you as a friend and send you the first message. Luckily, LINE has several tools to help Contacts start chats with businesses.

This image shows the customer service LINE rules for the LINE official account: Customers must message you first, but there is no messaging window
LINE 1:1 messaging rules for official accounts

As long as your business is on your contacts’ friend list, you’ll be able to exchange messages with them freely.

LINE Customer Service: Messaging Inboxes

LINE customer support teams need an inbox that offers messaging and contact management features according to their size. Let’s have a look at two options: the LINE Official Account Manager and a third-party inbox.

The LINE Official Account Manager has a messaging inbox with basic organizational features. Agents can mark chats as Follow Up or Resolved, or pin them for higher priority. Adding tags and comments to each customer’s profile is also possible.

In addition, it comes with an auto-reply feature that supports message formats like images, videos or coupons. You can choose the Scheduling option to trigger the message outside of business hours, or use keywords to trigger an auto-reply when a customer sends a message containing a 100% keyword match.

For example, the term Business Hours could trigger an automated reply with your business hours. Since your customers won’t know the keywords, help them by sharing the list of keywords in the chat thread when they reach out.

This image shows the different types of messaging inboxes for LINE support teams depending on their size and requirements
Types of messaging inboxes for your LINE customer service teams

The LINE Official Manager supports up to 100 admins per account. Although that’s a quite generous figure, it’s not the most suitable messaging inbox for medium to large-size businesses as you can’t assign conversations to agents.

Plus, as the number of inbound conversations increases, you’ll probably need to automate more complex processes or create tickets on a third-party platform, to name some examples.

To access advanced messaging and organizational features, you must connect the LINE Messaging API to a third-party messaging inbox like This is a great option if you plan to use LINE alongside other messaging channels.

Let’s go through some of the benefits of using as a messaging inbox for LINE customer service.

LINE Customer Service with Quick Wins

To start using LINE with as a messaging inbox, follow the next steps:

  1. Create a Line Official Account
  2. Sign up for a account
  3. Connect your LINE Official Account to

Then, give your support teams access to your Workspace. By doing so, they’ll be able to use multiple features that will improve the effectiveness and quality of their work. Let’s go through some of them.

LINE Customer Support: Answer FAQs, Route Customers and Escalate Cases’s Workflows Module is a visual workflow builder that companies use to automate repetitive support tasks while reducing agent workload. Here are some ways to use them for LINE customer service.

Create an FAQ menu that answers common support questions. The LINE Official Account Manager doesn’t come with a multiple choice question feature, but you can easily build it on Workflows with the Multiple Choice Question Step.

Create a routing Workflow that starts with a pre-chat survey to determine customers’ needs and pass them to the right team based on your routing logic i.e: By language or region. Then, use your Contact distribution logic to auto-assign them to an agent.

This image shows how to provide LINE support with a Workflow
LINE customer service: A workflow for support teams

The Shortcut Button allows agents to manually trigger Workflows from the messaging console while chatting with customers. With the press of a button, they can carry out recurrent support tasks, such as:

  • Escalate complex cases to a higher ranking agent or pass leads to the sales department
  • Create support tickets on external CRM platforms like Zendesk or Zoho without leaving the platform

Workflows offer endless customization possibilities. The examples above are just that, examples. We encourage you to build automation that best fits your support teams’ needs.

LINE Customer Support: Get Customer Feedback with CSAT Surveys

CSAT surveys measure customers’ level of satisfaction with specific interactions with your company. You can use them to determine how happy your customers are with the LINE customer service your company provides.

To create a CSAT survey, simply build an Ask a Question Step and select Rating. Survey answers can be saved on Google Sheets or a data warehouse of your choice.

This image shows a CSAT survey built with to ask for feedback after a customer support LINE conversation
Provide better LINE customer support with CSAT surveys

We suggest triggering CSAT surveys manually using the Shortcut Button to have full control over when to ask for customer feedback. Alternatively, use Conversation Closed as a Trigger to automatically send a survey after closing the conversation.

LINE Customer Support: Get an Overview of Customers’ Chat History with Contact Merge

Your business probably receives inbound conversations through other messaging channels. As a result, you’ll end up with siloed conversations across those channels.

This is less than optimal for support agents, who need to have a single, holistic view of customers’ profiles and conversation history.

This image shows's Contact Merge feature, which can be used by LINE support agents to get a holistic view of their Contacts
Merge Contacts to help your LINE customer support teams

The Contact Merge tool joins two or more customer profiles to create a single customer story. As a result, agents don’t waste time and resources working with duplicated contacts. They can also determine if a customer has reported a recurring issue from a different channel.

LINE Customer Support: Gain Access to Advanced Reports and Analytics

The Reports Module has everything managers need to supervise the effectiveness of their support team, making sure they are meeting their KPIs. This module features the following Tabs: Conversations, Users, Contacts, Messages and Logs.

This image shows's Reports Module, which can be used to track the performance of support agents
The Reports Module helps managers track the performance of their LINE support agents

With a glance, managers get insights into important metrics such as agent productivity, conversation resolution time or the number of outgoing messages.

Reports can be filtered by date range, category, team and user, so identifying long-term trends is as easy as spotting specific issues.

LINE Customer Support: Mobile App for Agents on the Go

The app comes with all the features that you find in the desktop version. It’s a pocket-size solution that allows support agents to reply to conversations wherever they are or ensure that a VIP customer gets prompt responses.

This image shows the app. With it, customer service LINE agents are able to provide customer support wherever they are
Reply to customer inquiries wherever you are with the app

To get the app, download it from the Google Play Store for Android and the Apple App Store for iOS.

You’ve made it to the end of the blog. Do you want to message your customers on LINE with the leading customer communication platform? Sign up for a account today!

Further Reading

If you’d like to learn more about customer support with other messaging channels, have a look at the following articles.

Román Filgueira
Content Writer
Román Filgueira, a University of Vigo graduate holding a Bachelor's in Foreign Languages, joined the team as a Content Writer in 2021. Román offers expert insights on best practices for using messaging apps to drive business growth.
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