Why Is Your Customer Acquisition Cost So High? Master Batch Number Screening to Eliminate Interference from Invalid Users

In the fiercely competitive landscape of cross-border marketing, the rising customer acquisition cost has become a common pain point for enterprises. Many companies are trapped in the dilemma of "investing 100,000 yuan but failing to gain 1,000 targeted customers". The root cause is not the disappearance of traffic dividends, but that most enterprises ignore the core value of batch number screening, wasting a large amount of resources on invalid users. Proper batch number screening can eliminate empty numbers, disconnected numbers, and low-intent accounts from the source, ensuring that marketing resources accurately reach the target customer group; ignoring batch number screening, no matter how high-quality the content or how precise the channels are, will lead to inefficient conversion due to interference from invalid users, pushing up the customer acquisition cost. Enterprises that achieve low-cost and high-conversion all regard batch number screening as a preliminary link in customer acquisition, using a scientific screening system to pave the way for efficient customer acquisition and ensuring that every marketing investment generates tangible value.

I. The Culprit of High Customer Acquisition Cost: Invalid Numbers, a "Black Hole" Devouring Marketing Resources

Many enterprises attribute their customer acquisition predicament to "expensive traffic" but never examine the quality of their number pools. Extensive customer acquisition without batch number screening turns invalid numbers into a "black hole" that devours resources, mainly reflected in three aspects:
  • Shocking Proportion of Invalid Numbers, Persistently Low Reach Rate: Among user numbers obtained through extensive traffic channels, invalid numbers such as empty numbers, disconnected numbers, and unregistered accounts often account for more than 60%. Blindly sending messages without batch number screening will result in a large number of marketing messages "sinking into the sea". A cross-border clothing enterprise once sent new product promotions to 100,000 numbers, and due to the lack of screening, the actual reach rate to real users was less than 25%, doubling the customer acquisition cost.
  • Interference from Low-Intent Users, Greatly Reducing Conversion Efficiency: Low-intent users mixed in the number pool will not only fail to convert but also file complaints due to frequent receipt of irrelevant information, affecting account weight. Without precise stratification through batch number screening, enterprises can only send messages in a "one-size-fits-all" manner, which fails to impress high-intent users and harasses low-intent users, further reducing conversion efficiency.
  • High-Risk Accounts Trigger Penalties, Wasting Previous Investments: Some numbers are marked as high-risk accounts by platforms due to violations. Sending messages to such accounts is likely to trigger risk control, resulting in restricted or even banned marketing accounts. Batch number screening can identify risk characteristics in advance, while enterprises that skip this step often lose accumulated customer resources due to account issues, increasing additional customer acquisition costs.

II. Core Value of Batch Number Screening: Reducing Customer Acquisition Cost from the Source

Batch number screening is not simply "eliminating invalid numbers", but a comprehensive screening system covering "validity, security, and intent". Its core value runs through the entire customer acquisition process and directly determines the customer acquisition cost and conversion efficiency:
  • Improving Resource Utilization, Reducing Unit Customer Acquisition Cost: By eliminating invalid accounts through batch number screening, marketing resources are concentrated on real users, and the input-output ratio of marketing per user can be increased by more than 3 times. After introducing batch number screening, a cross-border e-commerce enterprise in Shenzhen streamlined 100,000 numbers to 30,000 valid numbers, directly reducing the customer acquisition cost by 58%.
  • Accurately Locating High-Intent Customer Groups, Improving Conversion Efficiency: Batch number screening can combine user region, consumption habits, historical interaction and other data to screen out high-intent customer groups. For example, for 3C product enterprises, screening numbers with "inquiry records for electronic products in the past 30 days + North American region" can increase the push conversion rate by 4-6 times compared with unscreened numbers.
  • Ensuring Marketing Security, Avoiding Additional Losses: Batch number screening can identify the characteristics of high-risk accounts in advance, such as violation complaint records and high-frequency complaint labels, helping enterprises avoid the risk control red line of the platform and preventing customer loss and re-acquisition costs caused by account bans.

III. Shortcomings of Traditional Screening: Manual Operation Cannot Support Large-Scale Customer Acquisition Needs

After some enterprises realize the importance of screening, they try to screen numbers manually. However, in the face of large-scale customer acquisition needs, the shortcomings of traditional methods have become increasingly obvious:
  • Extremely Low Efficiency, Unable to Keep Up with the Rhythm of Customer Acquisition: Manually making test calls or checking number status one by one, a person can only complete the screening of hundreds of numbers a day. Faced with number pools of tens of thousands or even hundreds of thousands, it is completely inadequate. A home furnishing enterprise once organized a 5-person team to screen 50,000 numbers, which took two weeks to complete, missing the best marketing window.
  • Single Dimension, Insufficient Screening Accuracy: Manual screening can only determine whether a number is valid, and cannot comprehensively evaluate the intent based on multi-dimensional data such as user behavior data and consumption capacity, which easily misses high-quality users who are "high-intent but not yet interactive" and mistakenly retains interfering accounts that are "seemingly valid but low-intent".
  • High Error Rate, Poor Data Reliability: Manual screening relies on subjective judgment, which may misjudge valid users who are "temporarily disconnected but active for a long time" and ignore the "hidden characteristics of high-risk accounts", leading to large fluctuations in subsequent marketing effects and failing to form a stable customer acquisition system.

IV. Core Dimensions of Batch Number Screening: Building a Precise Screening System

Efficient batch number screening requires building a three-dimensional screening system around "validity, security, and intent" to ensure that the screened number pool has both high quality and high value:
  • Validity Screening: Eliminating "Dead Numbers" to Lay a Solid Foundation for Reach: As the basic link of batch number screening, it quickly identifies invalid numbers such as empty numbers, disconnected numbers, and unregistered accounts by connecting to real-time operator data and platform interfaces, ensuring that all accounts in the number pool are real and reachable, laying the foundation for subsequent marketing.
  • Security Screening: Avoiding Risks to Ensure Marketing Security: Focus on detecting whether the number has violation complaint records, whether it is marked as a "spam account" by the platform, and whether it is associated with high-risk devices and other characteristics, and completely eliminate high-risk accounts to avoid platform penalties caused by sending messages to such accounts and ensure the stable operation of marketing accounts.
  • Intent Screening: Targeting High-Potential Users to Improve Conversion Efficiency: Combine user historical interaction data, browsing records, consumption preferences and other dimensions, set screening conditions such as "active consultation in the past 15 days", "browsed product detail pages", and "followed similar brands", accurately target high-intent customer groups, and make marketing content directly hit the pain points of needs.

V. Practical Steps: Building a Low-Cost Customer Acquisition System with Batch Number Screening

Enterprises can build an efficient customer acquisition system in accordance with the closed-loop process of "number collection - batch screening - precise marketing - review and optimization" combined with professional tools. The specific steps are as follows:
  • Step 1: Collect Numbers Through Multiple Channels and Establish an Initial Number Pool: Collect user numbers through official website forms, social media drainage, industry exhibitions and other channels, ensure the compliance of number sources, and record the number acquisition scenarios to provide basic labels for subsequent batch number screening.
  • Step 2: Conduct Full-Dimensional Batch Screening and Streamline High-Quality Number Pools: Import the initial number pool into professional screening tools, launch full-dimensional screening of "validity + security + intent", eliminate invalid, high-risk and low-intent accounts, and form a precise number pool. For example, a 3C enterprise streamlined 80,000 initial numbers to 23,000 high-value numbers through screening.
  • Step 3: Customize Content by Layer and Achieve Precise Reach and Conversion: According to the user labels after batch number screening, such as region, consumption capacity, and intent level, customize differentiated marketing content. Push "limited-time discounts + exclusive customer service" to high-intent users, and push "product cases + value interpretation" to potential users to increase the probability of interaction and conversion.
  • Step 4: Data Review and Optimize Screening Strategies: Combine marketing data and screening reports to analyze the conversion of user groups under different screening conditions, and optimize the dimensions and thresholds of the next batch number screening to make the screening system more in line with business needs and form a closed-loop optimization.

VI. Case Verification: Batch Number Screening Cuts Customer Acquisition Cost by Half

A cross-border beauty enterprise in Guangzhou was once trapped in the predicament of high customer acquisition cost. After introducing the batch number screening system, it achieved a performance reversal. The specific process and results are as follows:
  • Previous Dilemma: Investing 80,000 yuan per month in WhatsApp marketing, but only converting more than 200 customers, with a unit customer acquisition cost as high as 400 yuan and extremely low marketing efficiency.
  • Core Actions: - Batch number screening: Conduct full-dimensional screening of 120,000 initial numbers through professional tools, eliminate 92,000 invalid and high-risk numbers, and retain 28,000 high-intent valid numbers.
  • - Precise marketing: Customize localized marketing content based on the screened labels of "Southeast Asian region + women aged 25-35 + browsed beauty products in the past 30 days".
Final Results: The marketing reach rate increased from 22% to 85%, the number of converted customers per month increased to more than 800, the unit customer acquisition cost dropped to 100 yuan, and the customer acquisition efficiency increased by 3 times.
Case Conclusion: This case fully proves that batch number screening is the core method to reduce customer acquisition cost from the source.

VII. Supported by Professional Tools: ITG Global Screening Makes Batch Number Screening More Efficient and Accurate

Efficient batch number screening is inseparable from the support of professional tools. As a number screening tool, ITG Global Screening has become the first choice for enterprises to reduce customer acquisition cost with its three core advantages. The specific advantages are as follows:
  • Batch Efficient Processing, Breaking Through Efficiency Bottlenecks: Support batch detection of 100,000-level numbers. The full-dimensional screening of 100,000 numbers can be completed in only 15 minutes, with efficiency hundreds of times that of manual work, perfectly adapting to large-scale customer acquisition needs.
  • Multi-Dimensional Precise Screening, Targeting High-Value Customer Groups: It has 12 screening dimensions, which can not only accurately identify invalid numbers such as empty numbers and high-risk accounts, but also mark high-intent users through data such as "login frequency, interaction keywords, and consumption preferences". After screening, it outputs a clearly classified report, directly supporting precise marketing.
  • Security and Compliance Guarantee, Avoiding Operational Risks: Strictly abide by data compliance rules, only analyze through public data, and do not obtain users' private information; bank-level encryption technology is adopted for data transmission, which not only avoids platform risks caused by non-compliant detection but also ensures the security of enterprises' number resources.
  • Core Value of the Tool: With the help of ITG Global Screening, enterprises can quickly build high-quality number pools, upgrading batch number screening from "time-consuming and labor-intensive" to "efficient and precise", providing strong support for low-cost customer acquisition.

VIII. Conclusion: Batch Number Screening Opens a New Path for Low-Cost Customer Acquisition

In the current situation where customer acquisition cost continues to rise, "precision" is the core key to reducing costs, and batch number screening is the first line of defense to achieve precise customer acquisition. Ignoring batch number screening, enterprises will only fall into a vicious circle of high cost and low conversion due to interference from invalid users; doing a good job in batch number screening can ensure that marketing resources accurately reach the target customer group, maximizing the value of every investment.
For cross-border enterprises, whether through WhatsApp, email or SMS marketing, batch number screening should be regarded as a core preliminary link. With the help of professional tools such as ITG Global Screening, build a scientific batch number screening system, eliminate interference from invalid users from the source, and only then can enterprises achieve low-cost and high-conversion in the fierce market competition, making customer acquisition no longer a burden but a strong driving force for performance growth.

ITG Global ScreeningIt is a world-leading number screening platform that combinesGlobal mobile phone number segment selection, number generation, deduplication, comparison and other functions. It supports global customersBulk numbers from 236 countriesFiltering and testing services, currently supportedMore than 40 social and apps, such as:

whatsapp/line, twitter, facebook, Instagram, LinkedIn, Viber, zalo, Binance, signal, skype, DISCORD, Amazon, Microsoft, Truemoney, Snapchat, kakao, Wish, GoogleVoice, Botim, MoMo, TikTok, GCash, Fantuan, Airbnb, Cash, VKontakte, Band, Mint, Paytm, VNPay, Moj, DHL, Okx, MasterCard, ICICBank, Bybwait.

The platform has several features, includingOpen filtering, active filtering, interactive filtering, gender filtering, avatar filtering, age filtering, online filtering, accurate filtering, duration filtering, power-on filtering, empty number filtering, mobile device filteringwait.

Platform providesSelf-sieve mode, sieve mode, fine-sieve mode and custom mode, to meet the needs of different users.

Its advantage lies in the integration of major social and applications around the world, providing one-stop, real-time and efficient number screening services to help you achieve global digital development.

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