Complete guide to Zalo activation data: analysis of the entire process of acquiring customers in Vietnam/Southeast Asia

In Vietnam, Zalo has more than 70 million monthly active users and is a national messaging application covering all aspects from personal social networking to corporate marketing. For overseas teams, cross-border e-commerce and independent website promoters, batch verification of Zalo activation data is the first step to accurately acquire customers. This article will give you a complete analysis of how to obtain and use Zalo sieve number data from the technical process, data field interpretation, pipeline construction to compliance considerations.

What is Zalo activation data? Why is it critical for customer acquisition in Vietnam/SEA?

Zalo activation data refers to using technical means to batch detect whether a mobile phone number has registered a Zalo account, and further determine its active status, gender and other information. For the marketing team facing the Vietnam and Southeast Asian markets, this data is the basis for “accurate reach”.

• Vietnam market characteristics: Zalo is the most mainstream instant messaging tool in Vietnam, with coverage far exceeding Facebook Messenger and Telegram. Whether it is B2C e-commerce notifications, B2B business negotiations, or community fission, Zalo is the core contact point.
• The value of screening numbers: Numbers that have not subscribed to Zalo cannot receive any promotional messages; numbers that have been registered but have been inactive for a long time have extremely low reach rates. Through Zalo activation detection, you can:
  • Eliminate empty numbers and canceled numbers to save every sending cost.
  • Combined with activity filtering, target recent online users to improve conversion rate.
  • Combined with gender recognition, achieve male/female targeted promotion (for example, beauty products focus on women, game products focus on men).

Therefore, Zalo activation data is the core indicator for measuring number quality and the first filter for bulk customer acquisition funnels.

How to check whether Zalo number is activated? Basic process of Zalo screening

The complete Zalo screening process can be divided into three steps: prepare numbers, select test type, submit and export results. Using professional platforms such as KK-DATA, up to 1 million numbers can be processed at one time, which is far more efficient than manual verification.

Step 1: Prepare the number to be tested (generate or upload)

There are two ways to source your number:

• Manual upload: Upload the existing list in CSV or TXT format, supporting automatic identification of country codes (such as +84 Vietnam, +66 Thailand, +62 Indonesia).

• Global Number Generation: If you lack a precise list, you can use KK-DATA’s Global Number Generation module to generate the target country number segment for free. For example:

  • Vietnam +84 mobile number range (e.g. 84-9[0-9])
  • Thailand +66
  • Indonesia +62

  The generation is completely free. You can filter by country, operator, and number segment. After generation, you can directly import the number screening task.

Step 2: Select the detection function and submit the task

In the KK-DATA console (https://app.kkdata.cc/), select the platform as Zalo, and then check the following detection items (select as needed):

• Zalo activation detection (required): Determine whether the number is registered with Zalo.
• Zalo Valid Detection: Further confirm that the account can receive messages normally (excluding inactive or restricted accounts).
• Zalo Activity Detection: Set a time window (such as 7 days / 30 days / 90 days) to filter users who have logged in recently.
• Zalo Gender Identification: Identify male, female or unknown, some accounts will have an age range.

Before submission, the console will display the estimated cost (based on the number of tests × the unit price of the corresponding platform), and the task will be run after confirmation. Note: Submission cannot be made when the balance is insufficient. You need to recharge USDT (TRC20) first, with a minimum of about 50 USDT.

Step 3: View results and export filtered data

After the task is completed, the system will send a notification (Telegram notification can be bound), and detailed reports can be viewed in the console. Exported fields include:

Field name	Sample value	Description
Phone	+8490*******	Original number
Zalo activation	1	1=activated, 0=not activated
Zalo is valid	1	1=valid, 0=invalid/restricted
Activity	7 days	Last login time window
Gender	Male	Male/Female/Unknown
uid	123456	Zalo internal user ID

支持 CSV 和 TXT 格式导出，可直接用于后续的私信推广、二次筛选或导入 CRM。

What information can Zalo filter out? Detailed explanation of core fields

Understanding the actual meaning of each field can help you formulate customer acquisition strategies more accurately.

Zalo activation/validity check - whether the number is available

• Activation: Refers to the number successfully registering a Zalo account. Unactivated numbers (showing 0) may be empty, non-Zalo users, or not yet registered.
• Valid: On the basis of activation, the account can receive messages normally.部分账号注册后长时间未使用或违反规则被封，会被标记为无效。

It is recommended to use “open and valid” as the first filter condition. This ensures that subsequent promotions will not be delivered to invalid numbers, improving reach and cost efficiency.

Zalo Activity Filter - Find recent online users

Activity can be set within a time window (such as 7 days, 30 days, 60 days). Filtering users who are “active for 7 days” means that they have logged into Zalo in the past week and have a higher probability of opening the message. For time-sensitive activities (such as limited-time offers, live broadcast notifications), it is recommended to use a shorter window. For long-term brand maintenance, this can be relaxed to 30 days or 90 days.

Zalo Gender Identification - Male/Female Targeted Screening

Gender recognition is based on comprehensive judgment based on account registration information, nicknames, avatars and other data, with a high accuracy (not 100%, but sufficient for targeted promotion). Results were classified as male, female, or unknown. For example, a beauty and skin care e-commerce company can export only “female” users, and game promotion can first filter out “male” users. Note: Gender recognition results will not include ID card-level precise age. Some accounts will come with an age range (such as 20~30 years old), which is suitable for crowd portrait analysis, but cannot be used as an independent age filtering function.

How to use “global number generation + Zalo screening number” to build a customer acquisition pipeline?

Most overseas teams face the problem of “where do the numbers come from?” KK-DATA’s Global Number Generation module can generate any country number segment for free, and then connect it in series with the Zalo Screen Number module to form an automated assembly line.

1. Generate target country number segment: On the “Number Generation” page, select a country (such as Vietnam) and generate a batch of numbers (such as 100,000 consecutive numbers) by operator or interval.
2. One-click import of screening number task: The generated number automatically enters the list to be tested, and there is no need to manually download and upload it.
3. Submit Zalo filter number: Select the test item (activation + validity + activity) and submit the task.
4. Export high-quality users: Filter the numbers with “activated = 1, valid = 1, active = 7 days” and use them directly for promotion.

此流程完全在平台内闭环，无需跳转多个工具。 Moreover, “generating” is free, and “screening numbers” are deducted on a per-item basis. Free generation is performed before paid screening, which greatly reduces the cost of trial and error.

What should you pay attention to when using Zalo to activate data? (Compliance and anti-blocking)

After obtaining Zalo activation data, how to use it safely is an issue that many teams ignore. Here are three key recommendations:

1. Data source compliance: You can only use numbers that you legally hold or are authorized by users for testing. Never purchase number lists from unknown sources to avoid legal risks.
2. Avoid repeated testing and waste of balance: If multiple tasks contain the same number, fees will be deducted for each test. KK-DATA provides data deduplication warehouse function, which can automatically filter the detected numbers.

3. Private Message Frequency Control: Even if an “active” user is detected, adding friends in batches or sending messages still needs to comply with Zalo’s official frequency limits. It is generally recommended to add no more than 50 to 100 new friends every day, control group messages to no more than 200, and rotate different accounts to reduce the risk of account closure.

What is the difference between Zalo screen number and Telegram/WhatsApp screen number? How to combine them?

In the Southeast Asian market, the distribution of users on different platforms varies significantly. The following table compares typical scenarios among the three:

Platform	Dominant market	User characteristics	Typical uses
Zalo	Vietnam (absolute advantage), part of Indonesia	Mainly young users, widely used for shopping, customer service, groups	E-commerce notifications, local life promotion
Telegram	Indonesia, Malaysia, Thailand	Encrypted groups, community operations, cryptocurrency	Community fission, private domain traffic
WhatsApp	Indonesia, Thailand, Philippines	Large-scale users, end-to-end encryption	B2C customer service, order confirmation

Combination strategy: If you focus on Vietnam, Zalo is your first choice; if you also cover Thailand+Indonesia, it is recommended to run Zalo and WhatsApp filters at the same time, match the numbers to the corresponding platforms, and then conduct private message promotion separately. KK-DATA supports the same batch number detection on multiple platforms. You can obtain the activation status of each platform with one upload to facilitate subsequent diversion.

FAQ

Question: How accurate is the Zalo activation data? Can I be 100% sure that the number has been registered?

Answer: Activation detection is based on Zalo server response judgment, which usually achieves a high accuracy rate (above 95%). However, affected by network fluctuations or number status (such as just logged out), there may be occasional misjudgments. It is recommended to combine activity detection with secondary confirmation to improve effectiveness. For particularly important lists, multiple detection points can be cross-verified (such as activated + valid + active).

Question: Can Zalo gender recognition distinguish between “male” and “female”? Is age identifiable?

Answer: Gender recognition will divide accounts into three categories: male, female and unknown, which can meet basic orientation needs. The age field is not an independent function. Some accounts in the gender recognition results will have age information (such as 20~30 years old), but not all accounts will have it. It is not recommended to be used for screening to a specific age, but as a reference for population portraits.

Question: Why do some numbers show “activated” but cannot receive messages?

Answer: This is usually because the account is in an “invalid” state (such as being restricted from logging in or logged out). Therefore, we recommend checking “Zalo Effective Detection” when filtering numbers to ensure that the exported numbers are truly reachable. Open ≠ effective, the combination of the two can provide high-quality leads.

Question: When screening numbers on KK-DATA, how many numbers can be detected at most in one task?

Answer: A maximum of about 1 million numbers can be submitted for a single task. For larger-scale requirements, you can submit in batches or contact customer service for consultation. After the test is completed, the results are permanently saved on the platform and can be exported multiple times.

Question: If I only want to check the opening status of the “Vietnam +84” number segment, is there the fastest way?

Answer: Yes. First use the global number generation function to select the Vietnamese (+84) number range to quickly generate a batch of numbers (free), then directly submit the Zalo activation detection task and select “Activate + Valid”. The entire process takes just a few minutes to generate and submit, eliminating the need to manually write a list of numbers.

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The above is the complete practical guide to opening data on Zalo. From number generation, screening, deduplication to export, KK-DATA provides a complete tool chain from zero to one. Log in to the console immediately and start your first round of Zalo screening to accurately target active users in Vietnam/Southeast Asia.

👉 Log in to the console to start screening numbers | Two-way contact customer service https://t.me/kkdata_robot | More tutorials https://docs.kkdata.cc/