Why Customers Block Your LINE OA: Broadcast Mistakes to Avoid
- Why do customers block a LINE OA?
- What broadcast mistakes cause blocks?
- How often should you broadcast?
- How do you segment your audience?
- What should a welcome message say?
- What makes a message worth reading?
- When should you send?
- How do you track blocks?
- What about message limits and cost?
- What should you do if blocks rise?
- What mistakes should you avoid besides broadcasting?
- How does DAB handle this?
- Want help planning your LINE OA messages?
- FAQ
Customers commonly block a LINE Official Account because messages arrive too often, are irrelevant to them, sound pushy or come at the wrong time. Reduce blocks by setting expectations in a welcome message, segmenting your audience, sending fewer and more useful broadcasts, choosing sensible send times and checking block numbers after each campaign.
A LINE Official Account is valuable because customers invite you into a personal chat app. Blocks are the signal that you overstepped. Unlike an email unsubscribe, a block removes you from the chat completely, and you cannot message that person again unless they unblock you. This guide explains the common broadcast mistakes and how to fix them.
Key takeaways - A block means the customer wants no more messages from you. Treat the number as a quality signal. - Set expectations in a welcome message: what you will send and how often. - Segment your audience so each person receives messages that matter to them. - Send fewer, more useful messages instead of frequent promotions. - Check blocks after each broadcast and adjust.
Why do customers block a LINE OA?
People block when the account stops being useful. The usual reasons:
- They receive too many messages.
- The messages do not relate to them.
- Every message is a sales pitch.
- The tone feels pushy or impersonal.
- Messages arrive late at night or at awkward times.
- They did not expect messages in the first place.
- They had a service problem that was never answered.
What broadcast mistakes cause blocks?
| Mistake | Why it hurts | Fix |
|---|---|---|
| Sending to everyone | Most of the message is irrelevant to most people | Segment by interest, purchase history or behaviour |
| Broadcasting too often | Messages feel like spam | Set a realistic schedule and stick to it |
| Only promotions | The account has no value between sales | Mix in tips, updates, how-tos and service information |
| No welcome message | New friends do not know what to expect | Explain what you send and how often |
| Late-night or odd-hour sends | Notifications interrupt people | Send at times your customers are likely to read them |
| Long, cluttered messages | People do not read them | One message, one idea, one call to action |
| One huge image with tiny text | Hard to read on a phone | Use short text and clear buttons |
| Repeating the same promotion | Feels pushy and tiresome | Change the angle or stop when it has run its course |
| Ignoring replies | People feel they are talking to a wall | Reply to chats and questions promptly |
| Using broadcast for customer service | Public-feeling messages for private issues | Use one-to-one chat for support |
How often should you broadcast?
There is no correct number. The right frequency depends on your business, your content and your audience. Start with a schedule you can keep, and watch the block numbers and the replies after each message. If blocks rise, reduce frequency or improve relevance. A café that shares one useful menu update a week has a different rhythm from an online store with daily deals, and customers will tell you through their behaviour.
How do you segment your audience?
LINE Official Account Manager lets you send targeted broadcasts filtered by estimated attributes such as gender, age, area and OS, by chat tags you add, or by saved audiences. A targeted broadcast needs a minimum target reach, so very small segments may not be sendable. Useful segments:
- New friends and returning customers
- Customers by product or service interest
- Customers by location, such as branch area
- Customers who recently bought, and those who have not for a while
- Customers who clicked a previous message
Even a simple split into two or three groups is better than one message to everybody.
What should a welcome message say?
A good welcome message does four things: thanks the person, says who you are, sets expectations and invites a first action. Example in Thai, with placeholders to adapt:
สวัสดีครับ/ค่ะ ขอบคุณที่เพิ่มเพื่อนกับ [ชื่อร้านหรือบริษัท] เราจะส่งข่าวสารเกี่ยวกับ [หัวข้อ] ประมาณ [ความถี่] หากมีคำถาม พิมพ์ทักมาได้เลยครับ/ค่ะ
In English: "Thank you for adding [business name]. We will send news about [topic] about [frequency]. If you have a question, just message us."
Set a frequency you will actually keep.
What makes a message worth reading?
Messages are more likely to be welcome when they carry something of value:
- Useful information, such as opening hours, delivery updates or how-to tips
- An offer that is genuine and relevant to that person
- Order, booking or appointment updates
- New products or services the person has shown interest in
- A reason to start a chat, such as a question or a poll
Keep each message to one idea. Use a clear call to action, such as a button to view the product or book.
When should you send?
Avoid very late night and very early morning. Think about when your customers are likely to read messages: for many, that is around meal breaks and early evening, but test your own audience rather than assuming. Avoid sending during important local holidays unless the message is relevant to them.
How do you track blocks?
LINE Official Account Manager's insights show friend counts, including how many friends were added and how many have blocked you. Do this after each broadcast:
- Note the friend count and blocked count before sending.
- Send the message.
- Check the numbers again after a day or two.
- Record the message topic, audience and time.
- Look for patterns, such as particular topics or send times that increase blocks.
What about message limits and cost?
LINE Official Account plans include a monthly message allowance that varies by plan, from a small free allowance up to larger paid ones, and broadcasts count against it for each recipient. One-to-one chat replies, auto-responses and the greeting message do not count; check LINE for Business for current plan prices and allowances. This is another reason to segment: sending only to people who will care uses your allowance better.
What should you do if blocks rise?
- Check what you sent before the rise: topic, timing, frequency.
- Pause the least relevant broadcasts.
- Segment your next message more tightly.
- Review your welcome message and your reply speed.
- Ask a few customers, informally, what they want to see.
- Test a different frequency for a few weeks.
Not every block can be avoided. People block accounts for many reasons, including cleaning up their friend list. Aim to reduce avoidable blocks.
What mistakes should you avoid besides broadcasting?
- Adding people to your account without their knowledge
- Neglecting chat replies
- Leaving the rich menu and auto-replies out of date
- Using the same promotional image for weeks
- Sending messages that do not match your brand voice
For the wider picture of what a LINE OA can do, read how LINE OA marketing boosts a business and why online sellers need LINE OA.
How does DAB handle this?
DAB offers LINE Official Account services and has 18+ years of experience in digital marketing in Bangkok. Our LINE OA services for business cover planning how the account, replies and broadcasts work together.
Want help planning your LINE OA messages?
If your broadcasts are leading to blocks or few replies, contact DAB through LINE or our contact page. Learn more about our LINE OA services for business.
FAQ
Can I see who blocked my LINE OA?
No. You can see how many accounts have blocked you, but LINE does not show who they are.
How often is too often for LINE broadcasts?
There is no fixed number. If blocks rise or replies fall after you increase frequency, you are sending too often for that audience.
Can I message someone who blocked me?
No. A blocked account cannot receive your messages unless the person unblocks you.
Should I send promotions every time?
No. Mix promotions with useful information, updates and reasons to chat. Accounts that only sell are more likely to be blocked.
What time is best to send a LINE broadcast?
It depends on your customers. Avoid very late or very early hours, test a few times, and compare opens, replies and blocks.