Pre-Campaign Number Screening Checklist for the US Market: A Complete Number Verification Tutorial

When preparing outbound marketing campaigns targeting the US market—whether for community growth, direct messaging, or independent site traffic—the quality of your phone number data is the key determinant of ROI. If you have a batch of US mobile numbers and send messages or dial them directly, invalid numbers, unregistered platform accounts, or flagged number ranges can lead to account bans and wasted costs.

This article provides a practical pre-campaign number screening checklist for the US market, covering detection steps for Telegram and WhatsApp numbers, activity level assessment, and data cleaning essentials for the North American market. It helps you filter out invalid data before launching your campaign and precisely reach real users.

What is Number Data Cleaning Before a US Market Campaign?

Number data cleaning, also known as number screening, refers to the process of batch-verifying and filtering your phone number list before formal marketing. For the US market (+1 area code), the core objectives of cleaning include:

Filter out invalid and disconnected numbers: Avoid sending messages to non-existent numbers and wasting prepaid balances.
Detect platform registration status: Confirm whether a number has a Telegram or WhatsApp account, keeping only numbers with accounts.
Identify activity level: Determine if a user has been online recently, targeting only active accounts to improve response rates and conversion.
Avoid duplicate detection: Deduplicate numbers across tasks to prevent being charged multiple times for the same number.

A screening checklist organizes the above detection items by priority into an inspection process, ensuring every prepaid credit is spent on users who may convert.

Why is the Screening Checklist for the North American Market Different from Other Regions?

The North American market (USA + Canada) differs significantly from other regions in terms of number resources, carrier regulations, and platform user density. Therefore, your checklist must be adjusted accordingly.

Characteristics of North American Number Resources

The US primarily uses the +1 area code, with abundant number resources and a wide variety of carriers (e.g., AT&T, Verizon, T-Mobile). Compared to Southeast Asia or Europe, the invalid number rate is relatively low, but the proportion of numbers flagged as virtual operators (e.g., Google Voice, TextNow) is higher. These virtual numbers often cannot receive verification SMS or platform registration messages normally.

Therefore, when generating or importing US numbers, you should pre-filter by number range to exclude known virtual operator identifiers. Using the platform’s global number generation feature, selecting the US and specifying the number prefix, can effectively reduce initial “dirty data”.

Differences in User Platform Preference and Activity

In North America, WhatsApp user density is far lower than in India, Southeast Asia, or South America. Many US users are more accustomed to iMessage or native SMS, while Telegram has higher penetration in crypto communities and tech teams. Therefore, you cannot assume all US numbers are active WhatsApp users.

In the checklist, it is particularly reasonable for the US market to first detect Telegram registration status, then detect WhatsApp registration and activity. A recommended approach is: use “TG registered” detection to filter basic valid numbers, then separately detect activity on both platforms, and choose the appropriate channel based on results.

Detection Type	Use Case	North America Priority
TG Registered	Verify if a number has a Telegram account	★★★★★
TG Active	Filter Telegram users recently online	★★★★☆
WhatsApp Valid	Detect if a number has a WhatsApp account	★★★★☆
WhatsApp Active	Determine if a WhatsApp user has been active recently	★★★☆☆
RCS / Carrier Detection	Exclude virtual operator numbers	★★★★☆

How to Prepare a Clean US Number List?

Before submitting formal screening tasks, spending time organizing your number list can significantly improve screening efficiency and save costs.

Step 1: Number Generation or Import

If you don’t have existing target numbers, use the platform’s global number generation feature. Select the country as “United States”, enter the number prefix (e.g., +1 213, +1 310 for Los Angeles area codes), and generate random numbers in bulk. This generation is completely free; charges only apply when you run screening tasks.

If you have your own number list, you can import it via custom CSV format, and the platform will automatically recognize the format.

Step 2: Data Deduplication

After uploading numbers, use the data deduplication repository feature. This automatically identifies which numbers in the current list have already been detected in historical tasks under the same account. Deduplication prevents you from being charged multiple times for the same number, especially useful for studios or agencies frequently processing the same seed users.

Step 3: Number Format Standardization

The standard format for US numbers is +1 [area code] [7-digit number], e.g., +14155551212. It’s best to unify them to E.164 format before importing to avoid detection failures due to format errors. The platform usually handles common formats automatically, but a manual check doesn’t hurt.

Must-Check TG/WA Number Checklist Items Before a US Marketing Campaign

Below is an actionable number screening checklist tailored for the US market. It is recommended to follow the items in order.

Checklist Tip

When performing cross-platform detection, start with lower-cost detection types, such as “TG Registered” or “TG Valid”. Only after confirming a number is registered on a platform should you invest higher costs to detect its activity or gender. This “shallow to deep” strategy maximizes balance savings.

TG Number Check: From Registration to Activity

TG Registered Detection (Registration Check)
- Check if the number has a Telegram account. This is the most basic screening and the lowest cost step. Output fields: whether registered, TGID can be exported.
- Usage: Filter numbers with Telegram accounts for subsequent community invitations or private messages.
TG Valid Detection
- Based on registration, confirm if the account can still receive messages normally. Some accounts that haven’t logged in for a long time may be recycled.
TG Activity Detection
- Supports specifying windows of 7 days, 15 days, 30 days, etc. The shorter the window, the more active the users filtered, but the smaller the number of qualifying numbers.
- North America Scenario Suggestion: If budget is limited, prioritize the 30-day activity window to cover more people; if pursuing high-quality leads, use the 7-day window.
- Activity detection also returns the last online timestamp, helping you further analyze user behavior.
Gender Identification (Optional)
- Determines user gender via avatar recognition. Useful for marketing targeting specific demographics (e.g., women’s fashion, men’s gaming). Note: Gender identification is based on image algorithms and has a certain accuracy rate; do not treat it as absolute evidence.

WhatsApp Number Check: Validity + WSID Export

WhatsApp Valid Number Detection
- Verify if the number has a WhatsApp account. This operation typically costs less than activity detection and is the foundation for subsequent actions.
- Output fields: Whether it is valid, WSID can be exported.
WSID Export
- WSID (WhatsApp Session ID) is a unique identifier linking a number to a WhatsApp session. After exporting WSID, you can use compliant WhatsApp API tools to send one-to-one messages without manually entering the number each time. This is key data for scalable WhatsApp marketing.
Activity Detection (Optional)
- Some users detect WhatsApp online status to judge activity. However, for the North American market, the cost-effectiveness of WhatsApp activity detection may be lower than directly detecting iMessage or RCS; choose based on actual needs.

Key Actions After Executing the Checklist

After completing all inspection tasks, you should obtain filtering results from multiple platforms.

Export and Categorization

The platform supports exporting detection results in CSV or TXT format. It is recommended to export by category:

tg_active_7days: Telegram users active in the past 7 days
wa_valid_all: All numbers with WhatsApp accounts
wa_active_with_wsid: Active numbers with exported WSID

Data Deduplication Repository Management

It is recommended to import the exported results back into the data deduplication repository. This way, when you import the same number list next time, the system will automatically recognize which numbers have already been detected and will not charge you again, directly referencing historical detection results. For studios that regularly clean the same batch of seed users, this step saves significant costs in the long run.

How to Monitor Cost and Efficiency During Checklist Execution?

Before submitting large-scale tasks, monitoring costs is crucial to avoid overspending.

Cost Control Reminder

Before submitting a detection task for more than 50,000 US numbers, be sure to check the real-time unit price and estimated cost on the console. It is recommended to submit tasks in batches based on your budget—e.g., 10,000 numbers per batch—and submit the next batch after completion. If your balance is insufficient, the task cannot be submitted; you need to recharge via USDT (TRC20) first.

Estimated Cost Feature

On the task submission page, the system automatically displays the estimated cost based on the selected detection types and number quantity. This number updates in real time as task type and quantity change, giving you a clear picture before charges are applied.

Task Status Tracking

After submitting a task, you can view the real-time status on the console (queuing, screening, completed). The platform will send a Telegram notification when the task is complete, so you don’t need to manually refresh the page.

Balance Management

The platform uses a pay-per-detection model with no subscription plans. Recharge is via USDT (TRC20), with a minimum of approximately 50 USDT. It is recommended to estimate one month’s consumption based on historical task usage and recharge in a lump sum to avoid frequent recharges disrupting your workflow.

Frequently Asked Questions

Q: Why must number cleaning (screening) be done before a US market campaign?

A: Directly dialing or sending messages to numbers increases the risk of your account being flagged or banned. Additionally, invalid numbers waste prepaid credits. Screening helps filter out invalid, disconnected, or unregistered numbers, ensuring your marketing budget is spent on users who may convert. This is fundamental data preparation for overseas customer acquisition.

Q: For US market screening, must I detect both Telegram and WhatsApp platforms?

A: Not necessarily. If your marketing channel only uses WhatsApp, you can just run WhatsApp screening. However, considering that a significant portion of North American users use both platforms, and less competitive platforms may have lower acquisition costs, it is recommended to detect both and then choose the platform with higher activity for focused promotion, adjusting your checklist flexibly.

Q: What’s the difference between TG activity detection windows of 7 days, 15 days, and 30 days?

A: The activity window indicates whether the account has been online or performed actions within the past 7, 15, or 30 days. A smaller window (e.g., 7 days) filters more active users but yields fewer qualifying numbers; a larger window (e.g., 30 days) yields more qualifying numbers but with potentially lower average activity. For precise North American marketing, start with “TG Registered” to validate basic numbers, then choose a short-term activity detection based on budget.

Q: Can I detect TG and WA in one task?

A: Yes. When submitting a task, you can select multiple detection types. The system will simultaneously screen numbers for Telegram and WhatsApp. This is highly efficient for users preparing cross-platform marketing campaigns and is a key step in creating a comprehensive screening checklist.

Q: What is the exported WSID used for after screening?

A: WSID (WhatsApp Session ID) is a key identifier linking a WhatsApp account to a phone number. After exporting WSID, you can use compliant WhatsApp API tools to precisely deliver one-to-one messages or template messages to filtered valid users, avoiding invalid pushes to non-existent numbers.

Start cleaning your US number list now. Log in to the console, select the checklist that matches your marketing goals, and complete number cleaning before your formal campaign to ensure every dollar is spent on valid users.

👉 Log in to the console to start screening
If you encounter any issues during use, you can contact customer service via Telegram: https://t.me/kkdata_robot
For detailed operation guides and billing instructions, refer to: Official Documentation and Official Billing Page

Pre-Campaign Number Screening Checklist for the US Market: A Complete Tutorial on Number Verification

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