LINE OA is the most powerful marketing channel for Thai businesses - over 54 million Thais use LINE daily, and your messages reach interested customers directly, without an algorithm in the way. But many businesses send broadcasts with only 10-20% open rates or worse - getting blocked by customers. This guide covers LINE OA marketing end to end - growing followers, broadcasting, converting and measuring - with techniques that will double or triple your open rate and minimize your block rate.
LINE OA Marketing in 3 Stages: Acquire, Engage, Convert
Broadcast is only the middle of LINE OA marketing - without new followers there is no one to send to, and without a way to convert you only collect opens. Plan all 3 stages:
| Stage | Goal | LINE OA Tools |
|---|---|---|
| 1. Acquire | Grow followers | QR Code, Add Friend Ads, Coupon exchange |
| 2. Engage | Increase Open & Click Rate | Rich Menu, Broadcast, Content, Chatbot |
| 3. Convert | Increase Sales & Repeat | Segmentation, Coupon, Follow-up, Loyalty |
Engagement isn't only broadcasts - a well-designed, seasonally updated Rich Menu and an AI Chatbot that answers 24/7 give customers a reason to come back to the chat even on days you send nothing.
Stage 1: Grow Your Followers
Ways to grow LINE OA followers that work:
- •QR Code + add-friend coupon - put a QR Code on tables, the counter and receipts with an offer like "Add us on LINE, get 10% off" - the most effective method
- •Add Friend Ads - LINE ads customers can add as a friend instantly, from around 3-5 THB per friend; 1,000-3,000 THB/month is enough to start
- •"Add LINE" button on your website - on every page
- •Cross-promote - share your LINE QR on Facebook, Instagram, TikTok
Target: at least 100 followers/month for small businesses and 500/month for medium businesses.
Why Customers Block Your LINE OA
Once you have followers, stage 2 is broadcasting in a way that keeps them reading - starting with what gets you blocked:
- •Too frequent - sending daily or multiple times a day annoys customers
- •Irrelevant content - sending women's product promotions to male customers
- •Only selling - every message is "Buy now! Sale!" with no value
- •Too long - messages requiring excessive scrolling without a hook
- •No personalization - identical messages to everyone
Once blocked, customers will never receive your messages again - and you won't even know they blocked you. Retaining existing followers is more important than acquiring new ones.
The Golden Rule: 80/20 Content Split
The most important broadcast rule: 80% value, 20% selling:
- •80% valuable content - tips, useful info, how-to's, behind-the-scenes, news, entertainment, plus interactive content like polls, quizzes and surveys
- •20% promotional - discounts, promotions, new products, flash sales
Example: A restaurant sends 5x/month → 4 times recipes/tips/behind-the-scenes → 1 time promotion. Customers look forward to messages because they get value, not just sales pitches.
Writing Broadcast Messages That Get Opened
How to write high open-rate messages:
- 1.Open with a hook - first 2 lines must grab attention: "Did you know? 80% of Bangkok restaurants make this mistake..."
- 2.Use emoji sparingly - 2-3 per message catches the eye without looking spammy
- 3.Keep it short - messages shouldn't exceed 500 characters. Use Rich Message or Card for longer content
- 4.Clear CTA - tell customers what to do: "Tap the link", "Reply 1 for discount", "Book today"
- 5.Create urgency - "Last day today", "Only 10 spots left", "48 hours only"
- 6.Natural language - write like chatting with a friend, not formal advertising
Best Times to Send Broadcasts
Peak LINE reading times (data from Thai businesses):
| Time | Open Rate | Best For |
|---|---|---|
| 11:00-12:00 | Highest | Restaurants (before lunch), general promotions |
| 17:00-18:00 | High | Online shops, general services (after work) |
| 20:00-21:00 | High | Lifestyle products, entertainment (relaxing at home) |
| 08:00-09:00 | Medium | News, content that requires reading |
| Mon-Tue | Higher | Business content, B2B |
| Thu-Fri | Higher | Weekend promotions, restaurants |
Never send late night (after 22:00) or early morning (before 08:00) - customers will block immediately. Test your own timing as each business has a different audience.
Recommended Frequency
Suggested broadcast frequency by business type:
| Business Type | Frequency | Reason |
|---|---|---|
| Restaurant/Café | 2-3x/week | Daily specials, promotions |
| Online Store | 1-2x/week | New products, flash sales |
| Clinic/Health | 2-4x/month | Health tips, monthly promotions |
| Service/Agency | 2-4x/month | Case studies, tips, promotions |
| Real Estate | 1-2x/month | New projects, special offers |
Message Types Ranked by Open Rate
Message types ranked by open rate (highest to lowest):
- 1.Exclusive coupons/discounts - 60-80% open rate (customers feel special)
- 2.Personal notifications - 50-70% (appointments, order status)
- 3.Valuable content - 40-60% (tips, how-to guides)
- 4.News/updates - 30-50% (new products, shop updates)
- 5.General promotions - 15-30% (sales, flash deals)
Segment Before You Send
Segmentation is the single most important broadcast factor. Targeted messages get 2-3x higher open rates than mass sends. How to segment in LINE OA:
- •Tag customers - by behavior: "purchased", "interested in product A", "VIP", "new customer"
- •Demographics - LINE OA has basic gender/age data
- •Location-based - send branch-specific promotions
- •Purchase recency - bought in last 30 days vs inactive 90+ days
Read the detailed segmentation guide: LINE OA Customer Segmentation
Stage 3: Turn Followers Into Sales
Once you have segments, use them to close sales and bring customers back:
- •Targeted coupons - discounts only for people who haven't bought yet or haven't bought in a while
- •Automatic follow-up - customers who asked but didn't buy get a follow-up message automatically
- •Loyalty program - stamp cards, VIP membership, perks for returning customers
- •LINE-only flash sales - promotions that exist only on LINE make being a follower feel worth it
- •Birthday campaigns - automatic birthday discounts
Follow-up, welcome series and birthday campaigns can run on their own with n8n, no one pressing send each time. Read more: n8n + LINE OA
KPIs to Track Every Month
The numbers that tell you whether your LINE OA marketing works - if the block rate starts climbing, check frequency and the 80/20 split first:
| KPI | Target | How to Measure |
|---|---|---|
| Follower Growth | 100-500/month | LINE OA Manager > Statistics |
| Open Rate | > 40% | Broadcast Report |
| Click Rate | > 10% | Broadcast Report (links) |
| Block Rate | < 3% | LINE OA Manager > Statistics |
| Sales from LINE | Track LINE-sourced revenue | Coupon Code / UTM Tracking |
| Customer Retention | > 60% active in 90 days | Tag + Segmentation |
How chercode Helps With LINE OA Broadcast
chercode sets up automated, targeted broadcast systems:
- •Broadcast Automation - scheduled sends by day, time, and customer segment
- •Segmentation setup - auto-tagging + behavior-based grouping
- •AI Chatbot + Broadcast - chatbot handles chats + broadcast system sends promos. Read more: LINE OA Automation
- •n8n integration - complex workflows like messaging customers inactive for 30 days. Read more: n8n guide
- •Starting at just 5,000 THB - setup + training included
Need targeted broadcasts that don't get blocked? View Automation services or get a free consultation
Frequently Asked Questions
ส่ง Broadcast LINE OA บ่อยแค่ไหนถึงจะดี?
ขึ้นอยู่กับประเภทธุรกิจ แต่หลักทั่วไปคือ ร้านอาหาร/คาเฟ่ ส่งได้ 2-3 ครั้ง/สัปดาห์ ร้านค้าออนไลน์ 1-2 ครั้ง/สัปดาห์ คลินิก/บริการ 2-4 ครั้ง/เดือน สิ่งสำคัญกว่าความถี่คือคุณภาพเนื้อหา - ถ้าทุกข้อความมีคุณค่า ส่งบ่อยได้ แต่ถ้าเป็นโปรโมชันอย่างเดียว ส่งน้อยๆ ดีกว่า ใช้กฎ 80/20 คือ 80% เนื้อหาดี 20% ขายของ
Broadcast LINE OA ฟรีไหม?
LINE OA แบบฟรีส่ง Broadcast ได้ 300 ข้อความ/เดือน (นับต่อคนต่อข้อความ เช่น ส่ง 1 ข้อความถึง 300 คน = 300 ข้อความ) ถ้าต้องการส่งมากกว่านั้นต้องอัปเกรดเป็น Basic (1,280 บาท/เดือน, 15,000 ข้อความ) หรือ Pro (1,780 บาท/เดือน, 35,000 ข้อความ) ราคายังไม่รวม VAT 7% ยิ่งมีสมาชิกเยอะ ค่าใช้จ่ายยิ่งสูง ดังนั้นการแบ่งกลุ่มส่งเฉพาะคนที่เกี่ยวข้องจะช่วยประหยัดค่าข้อความได้มาก
Arm - chercode
Full-Stack Developer & Founder
Software developer with 5+ years of experience in Web Development, AI Integration, and Automation. Specializing in Next.js, React, n8n, and LLM Integration. Founder of chercode, building systems for Thai businesses.
Portfolio
