LINE Business channel overview

Learn about starting a conversation in your LINE Business channel and its limitations

Written By Frieda Yip (Super Administrator)

Updated at March 21st, 2025

What is LINE Business?

LINE Business is a messaging platform that allows businesses to communicate with customers directly through the LINE app. Businesses can use LINE Business to provide customer support, send promotional messages, and automate conversations.

 

Starting a conversation

To start a conversation, your customer must send a message first by adding your LINE Business account as a friend. 

Customers can find and add your LINE Business account in two ways:

  • QR code: Generate and share a scannable QR code to let customers add your account easily.
  • Link: Share a direct link to your LINE Business account for customers to click and connect.

Both the QR code and link can be created in LINE Business Manager.
 

Supported message type

Messages you can send

You can send the following message types through LINE Business in SleekFlow:

  • Plain text message: Max 1,800 characters
  • Documents: Max file size 16MB
  • Multimedia (images, videos): Max file size 16MB
  • Voice notes: Max file size 16MB
  • Payment links (SleekFlow Payment feature required)
  • Product messages from SleekFlow Product Catalog
  • Emojis
     

Messages you can receive

You can receive the following message types:

  • Plain text messages (Text formatting, such as bold and italic, is not supported)
  • Images
  • Voice notes
  • Emojis

 

Unsupported message type

LINE Business does not support receiving the following message types:

  • Location messages
  • Stickers
  • Contact messages

 

Message/conversation limitations

Conversation window

Unlike other messaging platforms, LINE Business does not impose a conversation window limit. You can send and receive messages at any time without restrictions.

 

Message recall and editing

  • Messages cannot be recalled or edited on SleekFlow after sending.
  • Messages cannot be deleted on SleekFlow after receiving.
  • Customers can delete messages in their LINE Business app, but this will not affect messages displayed on SleekFlow.

 

Message cost

LINE Business offers different pricing plans based on usage:

  • Free plan: Includes 500 free messages per month
  • Additional messages: Charged based on the pricing tier set by LINE Business

     
  • You can upgrade their account to enjoy higher message volume. For more details on pricing, refer to the LINE’s pricing page.