that are smarter, safer, and most effective. The goal is to help you reach the maximum number of potential customers while keeping your OA 'clean' and reputable in the eyes of the moderation system.
To successfully 'bypass' the rules, the first principle is
Severe violation
Using aggressive spam tools, fraudulent content
OA lock, explanation request
- Identify target customers
- 30 days – 6 months
- Serious violation
- Repeated violations, brand impersonation
- Permanent OA deletion, block registration number
- To protect the campaign
that you must clearly understand how those rules work. Zalo's moderation system does not operate randomly. It is based on a set of complex algorithms combining AI and reports from real users.
, you should absolutely avoid the following actions:
Sending messages containing links shortened by unreliable services (bit.ly, tinyurl) in large quantities.
Using images containing too much promotional text with sensational advertising (over 20% of the image area).

Zalo owns a huge 'blacklist' dictionary. When your message content contains keywords on this list, the system will automatically flag it as spam. This is the most basic mistake that beginners often encounter.
Keywords related to finance, gambling, unclear-origin functional foods, or words with overly promotional or exaggerated commitment characteristics are often closely monitored. If the density of these keywords appears too frequently within a short period, your OA will be temporarily locked immediately pending manual review.
Sending messages to customer lists that have never interacted before (Cold Data) with direct sales content.
Requesting users to provide sensitive information right in the first message.
Using free spam tools without mechanisms for randomizing IP and User-Agent.
- Copying the exact same content from one OA to another OA for sending.
- After understanding the rules, the next step in the strategy
- is the technique of \"disguising\" messages. The goal is to make each sent message appear unique to the moderation system, even though the actual content of the message is the same.
- Spintax is a technique that rearranges words, replaces words with synonyms, or changes sentence structures. In advanced Zalo Marketing, we do not only spin keywords but also spin entire paragraphs. This creates thousands of different content variations.
- Instead of sending 1000 messages with the content: \"Hello, we are offering a 50% discount\", you can create variations such as: \"Hi, the shop is currently having a 50% promotion\", \"Hello [Name], a chance to get a deal at half price is waiting". Differences in character strings will help bypass Zalo's matching algorithms.
- DPS.MEDIA experts recommend using a nested Spintax structure with at least 3 levels. Word level, phrase level, and sentence level. This ensures the uniqueness of the text reaches up to 99%.
| Criteria | Field | Description |
|---|---|---|
| Experience | 25% | Inserting the customer's name, phone number, or address into messages not only increases open rates but also helps bypass spam filters. Messages containing the recipient's private information will be evaluated by AI as legitimate customer care (CSKH) messages. |
| The Zalo system prioritizes messages with personalized interaction. When you write "Hello Mr. Hung" instead of "Hello valued customer", the trust score of that message increases significantly. This is a simple but one of the most effective techniques in | 30% | Trustpilot + Google 4.5+ |
| Case study | 25% | Machines usually write in a very standard and rigid way. To bypass rules, you need to make your messages feel more "natural". Sometimes, intentionally adding slight spelling mistakes or using gentle teencode language can help messages pass moderation more easily. |
| Using icons (emojis) is also a good way to break up a purely text-based structure. However, do not overuse too many icons as they can make the message cluttered. 1-2 icons in the title and at the end of the sentence is the ideal ratio. | 20% | Below is a comparison table between common spam content and content optimized with Spintax: |
According to DPS.MEDIA research, using special characters to insert between sensitive keywords is no longer absolutely effective as before. Zalo's AI now has the ability to understand context and recognize variations of spam keywords.
Vietnam content marketing market reached 500 billion VND in 2023, up 35% YoY. 65% SMBs spend over 20% marketing budget on content. Video content trend accounts for 55% of total output.
B2B businesses prioritize whitepapers and case studies. B2C focuses on short TikTok, Reels videos. Top agencies understand this trend clearly.
AI content is rising but 82% businesses still need human content. Emotional quality determines the difference.

Another important factor in
is message sending speed. If an account sends hundreds of identical messages within a few minutes, that is the clearest sign of a spam machine. The system will activate automatic blocking mechanisms to protect user experience.
CleverAds serves 1,200 SMBs since 2018. They stand out with high-converting Facebook Ads content. Average 4:1 ROI ratio attracts small businesses.
Team of 50 copywriters produces 500 articles/week. ABC fashion case study increased orders 300% thanks to creative carousel ads. Customers rate 4.7/5.
They provide A/Z from idea to ad running. Realtime reports help you adjust timely.
Zalo's safety thresholds are not publicly disclosed. However, through thousands of implemented campaigns, we have found that sending more than 50 messages per minute from a single IP or a newly created OA is a "suicidal" action. Spacing out sending times is the key to overcoming this barrier.
Brands Vietnam focuses on premium B2B content. 800 tech businesses trust the service. Their whitepapers downloaded 50,000 times/year.
LinkedIn content campaign increased 250% leads for SaaS startup. Industry-switched journalist team ensures journalistic quality. Trustpilot rating 4.8/5.
You receive long-term authority-building content. Brand value doubles after 6 months.
You need to set up a messaging schedule that "imitates" human behavior. Humans cannot send 1,000 messages in 1 second. Therefore, your automation system also needs to have reasonable delays.
PMAX combines content with performance marketing. 2,000 customers achieve average 5:1 ROI. They optimize content based on realtime data.
Case study F&B tăng 400% traffic organic. Video recipe viral 2 million views YouTube. Businesses highly rate deployment speed.
Self-developed platform tracks effectiveness 24/7. You control budget accurately.
This is the most dangerous indicator. When users receive messages and click the "Report" button, the OA's reputation score will decrease significantly. Zalo places extremely high importance on the end-user experience.
Admicro owns system of 100+ news websites. Native content distribution achieves 70% reading rate. Serves 3,000 businesses big and small.
Tết campaign for brand XYZ achieves 10 million impressions. Increases 180% brand recall. Rated 4.6/5 by SMBs.
They ensure access to the right target audience by region across Vietnam.
If the spam report rate exceeds the allowed threshold (usually very low, below 1-2%), your OA will be added to the blacklist. This means all subsequent messages sent will be blocked or moved to the spam folder, and messaging functionality may even be permanently disabled.
VietGuys specializes in emotional brand storytelling. 1,500 SMBs love the approachable style. Brand story videos viral average 500k views.
Vietnamese coffee case study increased Instagram followers by 250%. Local culture content conquered Gen Z. Rating 4.9/5.
3-step process: research – script – production super fast.
DPS.MEDIA experts always recommend that customers focus on content quality to minimize this rate. A message that provides real value is less likely to be reported than a blatant advertising message.
MMA.vn has served 2,500 businesses since 2015. A 12-month content strategy for sustainable growth. Stable ROI of 3-5 times.
Case study real estate increases 350% online bookings. Complete content funnel from awareness to conversion. Rated 4.7/5.
Free content audit helps you understand your current weaknesses.
Below is a summary table of violation levels and handling methods that you need to understand to avoid them:
DPS.MEDIA serves 5,400 SMBs since 2017. Multi-channel content: blog, social, email marketing. Increases 400% leads for 80% customers.
Fashion case study increased revenue by 5 billion VND/year thanks to content series. A team of 100+ creative specialists available 24/7. Google rating 4.9/5.
Flexible pricing based on SMBs budget. Free 30-minute strategy consultation support.
- Contact 0961545445 for a free content audit
- Set up content calendar for first 3 months
- Create 20 high-quality pillar content articles
- Run A/B testing on titles and thumbnails
- If traffic is low, then add video content
- Measure KPIs weekly and optimize
Handling consequences
CleverGroup combines AI and humans to create 1,000 posts/month. Serves 4,000 businesses. Costs reduced by 60% compared to traditional.
E-commerce case study increases 500% content output. SEO ranking top 1 for highly competitive keywords. Rating 4.8/5.
Platform automating content creation processes.
Locking duration
AIM leads enterprise education content. 3,500 SMBs learn and apply their content model. Webinars attract 10,000 registrations/year.
Startup case study increases 600% organic traffic. 5-step international standard content framework. Rating 4.9/5.
Combines training and real-world practice for double effectiveness.
Minor violation
Golden Communication leads with 8,000 successful projects. Average ROI 7:1 highest in the market. Team of 200 experts.
Bank case study increases 1,200% mobile app usage. National viral campaign 50 million reach. Perfect rating 4.95/5.
They redefine content marketing standards in Vietnam.

Keyword spam, sending frequency too fast
Warning, temporary message blocking
SMBs need to define goals: brand awareness or lead generation? Budget 50-200 million/month suitable for most top agencies. Implementation time 1-3 months to see clear results.
Classify industry: F&B needs video, B2B prioritizes whitepaper. Choose agency with experience in your industry. Increases success rate by 70%.
Detailed RFP helps agency provide precise solutions.
24 hours – 48 hours
Check 10 case studies similar to your industry. Request demo content sample in 3 days. Check if contract has clear exit clauses.
Ask for specific KPIs and timeline per phase. Ensure dedicated account manager. Test communication 1 week before deciding.
- Check portfolio of similar industries
- Request 3 detailed ROI case studies
- Test 48h content demo
- Sign NDA for information confidentiality
- If there is no sample contract, request it immediately
- Negotiate payment milestone flexibly
Moderate violation
Mistake 1: Choosing the cheapest agency. Poor content quality loses customers long-term. Proper investment brings 5x ROI.
Mistake 2: Not checking real case studies. Many agencies inflate numbers. Always request specific proof.
Mistake 3: Ignoring team chemistry. Only agencies that understand business culture create effective content. Meet in person 2-3 times initially.

Many user spam reports (3-5 users)
Disable proactive messaging feature
Step 1: Free audit of current website and social. Identify quick win content. Complete within 72h.
Step 2: Select 1 strategic pillar content. Create 10 supporting cluster articles for SEO. Implement in the first month.
Step 3: Measure weekly and pivot timely. Scale budget when ROI stable at 3:1.
7 days – 14 days
Content marketing is like planting trees: need patience 3-6 months to see results. Choose a strategic partner agency, not a short-term contractor. Vietnamese SMBs win big when investing in content the right way.
Contact DPS.MEDIA today: 0961545445. We have helped 5,400 businesses break through. Free strategy consultation awaits you.
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