Practical Guide to Telegram Agency Screening Services: How to Eliminate Zombie Accounts Through Professional Screening?

In cross-border marketing, zombie accounts (those without Telegram, long-term inactive, or fake registered accounts) are a "black hole" devouring corporate marketing resources—sending promotions to them not only yields zero conversions but also drives up customer acquisition costs, disrupts operational decisions, and even triggers platform compliance risks. Telegram agency screening services, as a professional account screening solution, can accurately identify and eliminate various types of zombie accounts through standardized processes and technical means, outputting a "clean" list of valid users for businesses. More importantly, Telegram agency screening is not a standalone tool; it deeply synergizes with ITG Global Filtering to break through data dimension limitations, comprehensively cleaning zombie accounts from three dimensions: "account status," "active behavior," and "authenticity." This enables businesses to bid farewell to "invalid outreach" and precisely direct marketing resources toward real, active users, making it a core practical tool for eliminating zombie accounts in cross-border operations.

I. Identifying Types of Zombie Accounts: The Prerequisite for Precise Elimination

Before initiating Telegram agency screening, it's essential to first clarify the characteristics of the three common types of zombie accounts in cross-border scenarios, setting clear goals for subsequent screening:

• "Not Activated/Deactivated" Zombie Accounts: Refers to accounts that have never registered for Telegram or were actively deactivated after registration. These accounts constitute 30%-40% of invalid data in corporate phone number databases. Sending messages to them directly wastes SMS and data costs.

• "Long-Term Dormant" Zombie Accounts: Accounts that have activated Telegram but have no login activity, message interactions, or group participation records in the past 90 days. Although these accounts show as "activated," user activity is extremely low, with marketing conversion rates typically below 0.5%.

• "Fake Registered" Zombie Accounts: Accounts generated through bulk registration tools or virtual devices, characterized by "multiple accounts registered from the same IP," "abnormal registration device information," and "no real user behavior trails." These accounts not only have no conversion value but may also be exploited by malicious actors, associating the brand with sending non-compliant information.

Statistics from a Southeast Asian number database of a cross-border e-commerce company show that the combined proportion of the above three types of zombie accounts reaches 52%. Without elimination through Telegram agency screening, this would waste over 40,000 RMB in marketing costs monthly and severely drag down overall conversion efficiency.

II. Practical Process for Eliminating Zombie Accounts with Telegram Agency Screening: Four Steps to Achieve Account "Purification"

Step 1: Raw Data Preprocessing – Clearing "Data Obstacles" for Screening
Raw number data provided by companies often suffers from format chaos (e.g., missing country codes, numbers containing special characters) and high duplication. Preprocessing via the Telegram agency screening service is needed first to optimize data quality:

• Format Standardization: The system automatically validates number formats using regular expressions, e.g., adding the country code to 85298765432 to make it +85298765432, or removing spaces and dashes from +1 234-567-8901, ensuring numbers comply with Telegram query standards.

• Duplicate Data Deduplication: Uses hash algorithms to compute unique identifiers for each number, automatically deleting duplicates after comparison. For example, from 100,000 European numbers provided by a company, 18,000 duplicates were removed after deduplication, avoiding wasted resources in subsequent screening.

• Invalid Format Removal: Directly filters out invalid data such as "abnormal number length (e.g., less than 8 or more than 15 digits)" or "containing letters/symbols (e.g., 12345abc)," initially improving data purity.

After preprocessing, the Telegram agency screening service outputs a "Data Preprocessing Report," detailing the specific quantity and proportion of format errors and duplicate data, providing a clear data foundation for the subsequent screening stages.

Step 2: Initial Account Status Screening – Eliminating "Not Activated/Deactivated" Zombie Accounts
This is the core step where the Telegram agency screening service eliminates zombie accounts, achieved by interfacing with the Telegram official API for accurate identification:

• Real-time Status Query: The system sends number verification requests to Telegram's official servers, obtains real-time account status, and directly marks numbers as "Not Activated" or "Deactivated," categorizing them into the zombie account list.

• Batch Processing Optimization: For million-level number datasets, the service employs a "batched concurrent query" strategy, processing 10,000 - 50,000 numbers per batch to avoid API rate limiting due to excessive single requests, ensuring screening efficiency. For instance, screening 500,000 Southeast Asian numbers typically takes only 4-6 hours to complete the initial status screening.

• Categorized Result Output: After initial screening, numbers are divided into two categories: "Valid Accounts (Activated)" and "Zombie Accounts (Not Activated/Deactivated)." Valid accounts proceed to the next stage, while zombie accounts are used to generate a "Zombie Account List," noting the specific status and reason for elimination.

A cross-border education institution, through this step, eliminated 32,000 "Not Activated/Deactivated" zombie accounts from 80,000 numbers. The proportion of valid accounts dropped from the initial 100% to 60%, significantly reducing无效 workload for subsequent activity screening.

Step 3: Active Behavior Refined Screening – Clearing "Long-Term Dormant" Zombie Accounts
Account status alone cannot distinguish between "active" and "dormant" accounts. The Telegram agency screening service needs to incorporate active behavior data for further filtering, requiring synergy with ITG Global Filtering to supplement behavioral dimension data:

• Activity Indicator Setting: Uses ITG Global Filtering to obtain four core types of data: "Login frequency in the last 30 days," "Number of messages sent/received," "Group interaction records," and "Channel follow activity." Sets activity standards like "High Active (login ≥5 times/week, message interaction ≥10 times/month)," "Medium Active (login 3-4 times/week, message interaction 5-9 times/month)," "Low Active (login 1-2 times/week, message interaction 1-4 times/month)," and "Dormant (login <1 time/month, no message interaction)."

• Data Cross-Validation: The Telegram agency screening service cross-references the behavioral data from ITG Global Filtering with account status data. For example, if an account is "Activated" but ITG Global Filtering data shows "no login in the past 90 days," it is classified as a "Long-Term Dormant" zombie account and eliminated.

• Industry-Specific Adjustment: Definitions of "active" vary by industry. For instance, the cross-border gaming industry might need "High Active" users (to ensure click-throughs for game promotions), while cross-border e-commerce might accept "Medium Active" users (as promotional info might still convert). The Telegram agency screening service allows adjustment of activity indicator thresholds based on industry needs.

A cross-border gaming company, through this step, eliminated 15,000 "Long-Term Dormant" zombie accounts from 48,000 valid accounts. Subsequently, the click-through rate for game promotion links increased from 1.1% to 3.8%.

Step 4: Authenticity Verification – Excluding "Fake Registered" Zombie Accounts
Fake accounts are difficult to identify completely through status and activity data alone. The Telegram agency screening service needs to collaborate with ITG Global Filtering to verify account authenticity through multiple dimensions:

• Device and IP Verification: ITG Global Filtering obtains account registration device models and IP address information. The Telegram agency screening service analyzes "number of accounts registered per device" (flagging as abnormal if over 5) and "consistency between IP address location and number location" (e.g., flagging an Indonesian number with a US IP as abnormal).

• Behavior Trail Analysis: Fake accounts typically lack real user behavior. ITG Global Filtering can identify abnormal behaviors like "no proactive actions after registration (e.g., not following channels, not joining groups)" or "message content consisting of meaningless characters." The Telegram agency screening service uses this to判定 fake zombie accounts.

• Compliance Information Matching: Interfaces with third-party identity verification databases (requiring user authorization) to verify if the identity information bound to the account is real, excluding accounts "registered using fake identities."

A cross-border social App, through this step, eliminated 8,000 fake zombie accounts from 32,000 valid accounts. Subsequent real conversion rates for user invitation registrations increased by 2.5 times, and no further platform compliance warnings due to fake accounts occurred.

III. Synergistic Advantages of Telegram Agency Screening + ITG Global Filtering: Making Zombie Account Elimination More Thorough

• Complementary Data Dimensions, Avoiding "Missed Screening": Telegram agency screening focuses on account status and basic activity data, while ITG Global Filtering supplements in-depth data like "Device IP," "Behavior Trails," and "Compliance Information." Their combination enables comprehensive screening from "surface status" to "deep characteristics." For example, a cross-border e-commerce company achieved only a 45% zombie account elimination rate using Telegram screening alone; after adding ITG Global Filtering, the rate increased to 68%, significantly improving valid account purity.

• Dynamic Update Mechanism, Ensuring "Long-Term Purification": User activity changes over time; some "Medium Active" accounts may gradually become "Dormant." ITG Global Filtering can track account behavior data in real-time, and the Telegram agency screening service periodically (e.g., monthly) re-screens based on the updated data, refreshing the zombie account list. A cross-border SaaS company, through "monthly update screening," ensures the zombie account proportion in its number database remains below 15%, enabling持续 precise allocation of marketing resources.

• Compliance Risk Control, Ensuring "Zero Violations" in the Elimination Process: Cross-border screening must comply with target market data regulations. ITG Global Filtering has built-in compliance templates for 20+ global regions, automatically verifying the screening process of the Telegram agency screening service. For instance, in the EU market, it ensures only screening accounts that have signed "Marketing Authorization"; in Southeast Asian markets, it avoids collecting sensitive user identity information, ensuring legal compliance while eliminating zombie accounts.
  
  

IV. Practical Case Studies: Actual Effects of Eliminating Zombie Accounts with Telegram Agency Screening

Case 1: Cross-Border E-commerce Company (Target Market: Indonesia, Southeast Asia)

• Pain Point: The company held 150,000 Indonesian user numbers. Previously sending new product promotion messages to all numbers resulted in only a 28% reach rate and 0.7% conversion rate. Preliminary investigation revealed massive resource waste due to zombie accounts.

• Practical Steps:

  1. Provided 150,000 raw numbers to the Telegram agency screening service for format standardization and deduplication, eliminating 9,000 duplicate/invalid format entries.

  2. Initial Account Status Screening: Eliminated 52,000 "Not Activated/Deactivated" zombie accounts, leaving 89,000 valid accounts.

  3. Synergized with ITG Global Filtering for Active Behavior Refined Screening: Eliminated 31,000 accounts with "No activity in the past 90 days," leaving 58,000 active accounts.

  4. Authenticity Verification: Eliminated 6,000 fake accounts identified by "multiple accounts registered per device,"最终输出 52,000纯净有效账号.

• Result: Sending promotions to the 52,000 valid accounts achieved a 91% reach rate and a 5.3% conversion rate. Monthly new orders doubled compared to before, and marketing costs decreased by 42%.

Case 2: Cross-Border Education Institution (Target Market: UK, Europe)

• Pain Point: The institution had 100,000 UK user numbers for course promotion but received few inquiries and many complaints. The core issue was sending messages to zombie accounts, causing user annoyance.

• Practical Steps:

  1. Telegram agency screening service preprocessed 100,000 numbers, eliminating 7,000 duplicates.

  2. Initial Account Status Screening: Eliminated 38,000 "Not Activated/Deactivated" accounts, leaving 55,000 valid accounts.

  3. Combined with ITG Global Filtering activity data, eliminated 19,000 "Low Active/Dormant" accounts, leaving 36,000 active accounts.

  4. Compliance Verification: Ensured all 36,000 accounts had signed "Course Marketing Authorization," eliminating compliance risks.

• Result: Pushing course information to the 36,000 active accounts increased inquiries by 3.8 times, reduced complaints by 80%, and achieved an 8.2% course registration conversion rate, far exceeding the industry average.
  
  

V. Conclusion

In cross-border operations, eliminating zombie accounts is the crucial first step to enhancing marketing efficiency. The Telegram agency screening service, through its standardized practical process of "Preprocessing - Initial Screening - Refined Screening - Verification," combined with the synergistic advantages of ITG Global Filtering, can comprehensively, efficiently, and compliantly clean various types of zombie accounts, outputting a pure list of valid users for businesses. For expanding businesses, mastering the practical application of Telegram agency screening services not only reduces marketing resource waste but also enables subsequent operational decisions to be based on real user data, laying a solid foundation for the sustainable growth of cross-border operations. Whether in cross-border e-commerce, education, or the SaaS industry, Telegram agency screening services will become a core tool for eliminating zombie accounts and achieving precision marketing.