Best Practices
In this article, we explore the rules and principles that minimize the probability of your WhatsApp account being blocked.
In the first part, we’ll briefly outline the key recommendations. Further details are provided below if you need them.
Part 1: Essentials
Number Age
- The longer a number has been registered with WhatsApp, the more resistant it is to blocking.
- A newly registered number is immediately considered “suspicious.”
✅ Recommendations:
- Warm up the number: send and receive messages, media, and real interactions for several days before linking it to the unofficial API (see document: Number Warming Process).
- Very important: do not scan the QR code immediately after registering a new number. Wait at least a day or more.
Spam Complaints
This is the most common reason numbers are blocked on WhatsApp.
✅ Recommendations:
- Make your recipients message you first. Add a “Contact us on WhatsApp” button or use pre-filled WhatsApp links.
- In your first message, ask a question so customers are more likely to reply.
- Add an opt-out option like: “Type STOP to stop receiving our messages.”
- Personalize messages (e.g., Hi %client_name%!).
⚠️ Remember: the first thing the recipient sees is the Block button. Make sure they have no reason to press it.
Suspicious Bulk Activity
WhatsApp algorithms flag sudden, unnatural activity.
✅ Recommendations:
- Don’t send more than 2 messages per minute, 6 hours per day, or more than 3 consecutive days of heavy sending.
- Gradually increase activity: don’t create multiple groups or message unknown numbers all at once.
Response Rate
WhatsApp favors accounts that look like real conversations.
✅ Recommendations:
- Aim for at least 30 replies per 100 messages sent (30%).
- Encourage customers to save your number in their contacts.
- Always balance sent vs. received messages.
Part 2: Details
Key Principles
The closer your communication resembles real human conversations, the safer your account will be.
❌ A real person would not:
- Send hundreds of messages per minute.
- Constantly message strangers, especially with links.
- Send identical texts to everyone.
- Speak impersonally without names.
- Send messages at perfectly equal intervals (e.g., every 5 seconds).
✅ A real person would:
- Respond to messages, use emojis, typing indicators, voice notes, and reactions.
Starting the Conversation
- Safest approach: let customers message you first.
- Use “Contact us on WhatsApp” buttons and pre-filled greeting links in ads and websites.
Loyal Audience
- Message contacts who already know your business.
- Ask customers to save your number in their contacts. This boosts your reputation in WhatsApp’s system.
Avoiding Spam
- Don’t blast cold contacts with promotions.
- Always personalize and vary your text.
- Don’t include links in the first message.
- If you must, only send safe HTTPS links.
Just 5–10 “Block” reports on first contact is often enough to get your number banned.
Human-like Behavior
- Always reply to customers.
- Use real behaviors: read receipts, “typing…”, “recording audio…”, emoji reactions.
- Don’t repeatedly contact people who never reply.
- Spread messages naturally throughout the day, not 24/7.
Technical Recommendations
- New numbers must be warmed up before using them at scale.
- Virtual numbers (eSIM, VoIP) are at higher risk and need even more warming (see Number Warming Process ).
- Do not scan the QR code right after registering a number.
- Limit sending to 6–12 messages per minute.
If Your Number Gets Blocked
- Wazzap cannot unblock numbers — this is 100% controlled by WhatsApp.
- If recovery fails, you can connect a new number to your Wazzap channel at no extra cost.
- Always apply warming and best practices when onboarding a new number.
⚠️ Final Note
Even when following all recommendations, there is always a risk of blocking when using the unofficial WhatsApp API.
That’s why Wazzap invented key features to minimize this risk:
✅ By combining these tools with the best practices outlined here, you can dramatically extend the lifetime of your WhatsApp numbers and operate at scale with greater confidence.