SMS vs Telegram Valid Numbers: Comparing Dual-Channel Reach Effectiveness for the Same Batch of Numbers

Teams engaged in overseas customer acquisition often have a batch of numbers at hand. Are they “SMS-valid” or “Telegram-valid”? Many people assume that as long as a number can receive calls and SMS, it will also have a corresponding account on Telegram. But the reality is: users shown as active in the carrier’s network may never have registered for Telegram, or even if they have, they might be inactive. Using the same batch of numbers to send ads via SMS versus via Telegram DM results in completely different reach rates, costs, and conversion paths. This article breaks down the differences between SMS-valid vs TG-valid numbers from three perspectives: detection principles, use cases, and combination strategies, helping you build a practical framework for dual-channel reach.

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Why Do We Need to Distinguish Between “SMS-Valid” and “TG-Valid” for the Same Batch of Numbers?

Carrier Reach ≠ Application-Level Activity

A mobile number marked as “normal in use” in the carrier’s database only means it can receive calls and SMS. However, whether the user has installed Telegram, created an account, or logged in recently—this information is not provided by the carrier. For example, in Indonesia, certain prefixes have good carrier signals, but Telegram penetration is relatively low. In Europe and the US, many people use virtual numbers (like Google Voice) to receive SMS, but these numbers cannot register for Telegram.

If you rely only on SMS-verified “valid numbers” to add followers on TG, the actual reachable ratio may be only 30%–50%. More critically, even if a number is registered on TG, it might be restricted by official anti-spam measures due to long-term inactivity (e.g., unable to join groups or receive DMs). Carrier reach ≠ Application-level activity — this is the fundamental reason for distinguishing between the two types of validity.

Differences in Detection Principles for the Two “Valid” Types

• SMS-valid (carrier detection): By sending an SMS or signaling verification (such as SMSC receipt, signaling interaction) to the target number, it confirms that the number can receive SMS normally on the carrier network. This detection cares only about the physical availability of the number, not whether the user uses any app.
• Telegram-valid: Using the Telegram API or protocol to detect whether the number has registered a Telegram account. Further detection can assess activity level (e.g., whether the user has been online in the last 7/15/30 days) and gender identification (determining the account owner’s gender through avatar recognition). This detection relies solely on Telegram’s own data and does not interact with carriers.

The goals of the two detection types differ: SMS-valid numbers are suitable for “broadcast” SMS marketing, while TG-valid numbers are suitable for “precise targeting” in community operations. Without differentiation, you waste your budget.

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Typical Uses and Limitations of SMS Valid Numbers

SMS is a classic channel for overseas customer acquisition, especially for high-volume notifications, verification codes, and coupon pushes. Main uses of SMS-valid numbers:

• Sending verification codes: login, registration, transaction confirmation.
• Promotional SMS: Combined with URL short links, directly drive traffic to independent websites or landing pages.
• Brand notifications: logistics updates, billing reminders, event announcements.

However, SMS reach has several limitations:

1. Delivery ≠ Open: SMS may be filtered by carriers, blocked by phone systems (e.g., iPhone’s “Unknown Sender” filter), or directly ignored by users. Based on industry experience, overseas SMS open rates are typically 10%–25%, far lower than Telegram messages.
2. Unstable international channels: Different countries have different blocking rules for international SMS. If the sender’s number is blacklisted, delivery rates drop sharply.
3. Cost inversion: Each international SMS costs $0.02–$0.08. Bulk sending is not cheap, and there is no free second touch.
4. Lack of user profiling: SMS only tells you the number is on the network; it cannot determine user age, gender, interests, etc.

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Typical Uses and Advantages of Telegram (TG) Valid Numbers

Telegram is an important user pool in high-penetration overseas markets (e.g., Russia, Ukraine, Indonesia, Brazil, Malaysia). TG-valid numbers (i.e., numbers registered with Telegram accounts) can be used for:

• Group invitations: Pull users into official product groups and continuously push content.
• DM reach: Promote products, activities, and services via bots or manual DMs.
• Community operations: Build interest-based groups to enhance engagement.

Unique advantages of TG-valid numbers:

1. High reach rate: TG messages have almost no filtering after delivery; users’ likelihood of opening push notifications is much higher than SMS, especially for rich-media content and videos.
2. Low-cost repeated touch: Once a user joins a group or becomes a contact, you can send unlimited free messages afterward.
3. Rich data dimensions: You can detect activity level (last online days), gender, and even export TG IDs for subsequent correlation analysis.

Activity Level and Gender Identification: Unique Data Dimensions of TG

TG detection not only determines whether a number is registered, but also returns:

• Activity level: Based on a specified window (e.g., 7 days, 15 days, 30 days), it indicates whether the user has been online recently. Active numbers are better for instant DMs; inactive numbers may have been abandoned but can still be invited to groups.
• Gender identification: Through avatar image recognition, tags the number with “male/female/unknown.” This is especially important for categories like women’s apparel, beauty, and maternal/child products, significantly improving conversion rates.

This data cannot be provided by SMS detection and is the core value of the TG channel in precision marketing.

DM vs Bulk Invite: Operational Differences in TG Scenarios

• DM (bot or manual): One-on-one communication, high conversion rate, but easily triggers anti-spam mechanisms (if frequency is too high or content gets reported, accounts may be banned). Suitable for high-value users.
• Group invitations: Batch add valid numbers to groups, then push unified messages within the group. As long as the group is well-managed, users can be retained long-term. The downside is slightly lower privacy; users may mute the group. Suitable for general promotion.

Recommendation: First use TG detection to filter active numbers and gender, then pull males/females into different groups, and use DMs for targeted conversion.

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Dual-Channel Reach: How to Combine “SMS + TG” into a Workflow

The weaknesses of a single channel are obvious: SMS is costly with shallow conversion; TG coverage is limited by local registration rates. A combination strategy can leverage strengths and avoid weaknesses:

1. First, use SMS detection to cover numbers on the network: Confirm numbers are carrier-viable at the lowest cost, removing empty and disconnected numbers.
2. Then, use TG detection to filter activity + gender: Perform TG detection on the SMS-valid numbers, saving significant costs from detecting invalid numbers unnecessarily.
3. Split and export:
   • SMS channel: Send to all SMS-valid numbers, but design content to “guide users to TG for rewards.”
   • TG channel: Send to TG-active and gender-matched numbers via DM or group invitation.

Example: A cross-border e-commerce company targeting Indonesian female users first uses KK-DATA’s RCS/empty number detection to filter SMS-valid numbers (~100,000 records). Then, it performs TG activity detection and gender identification on these 100,000 records, obtaining 30,000 TG-active + female-tagged numbers. It then sends TG group invitations to these 30,000 users, pushing discounts within the group. To the remaining 70,000 SMS-valid numbers, it sends an SMS: “Click the link to add TG and get a no-threshold coupon.”

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Use KK-DATA to Screen Numbers Once, Export Valid Data by Platform

To implement the above dual-channel workflow, you need a platform that can perform both SMS detection (carrier/RCS/empty number) and TG detection (registration/activity/gender). KK-DATA, as a data screening platform for customer acquisition, supports the full process of generation → screening → export, billing per record without subscription packages.

Step 1: Number Generation and Deduplication

• In the console, use the Global Number Generation module to generate target numbers by country/prefix (e.g., Indonesia +62 81…).
• After generation, numbers automatically enter the Data Deduplication Repository, cross-task deduplication avoids repeated checks. For example, if a batch of numbers was already checked before, they are automatically skipped when re-imported, saving balance.

Step 2: Execute Dual-Channel Detection and Export by Segment

• In the console, create a task and select both Carrier Detection (SMS/RCS/Empty Number) and Telegram Detection (Registration+Activity+Gender).
• You can submit multiple detections simultaneously, but it is recommended to execute step by step in the “SMS first, then TG” order (as explained above).
• After detection, filter by conditions (e.g., SMS-valid + TG-active + Gender = Female), then select CSV/TXT export. Fields can include number, TG ID, active days, etc.

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Comparison: SMS-First vs TG-First vs Dual-Channel Pass

The following table compares the three strategies from five dimensions to help make decisions based on budget and target market.

Dimension	SMS-First	TG-First	Dual-Channel Pass
Use Cases	Verification codes, notifications, low-age/low TG penetration markets	High TG penetration markets (Eastern Europe, Southeast Asia), community operations	Medium to high budget, maximizing reach and conversion
Cost Structure	Fixed unit price for sending; each touch is charged	One-time detection fee; subsequent touches almost free	Detection fee slightly higher (cumulative two detections), but conversion revenue covers cost
Data Quality	Only know number is on network, no profile	Can obtain TG registration, activity, gender	Number on network + TG registration + activity + gender, full dimensions
Conversion Cycle	Short-term (click link to convert)	Medium-term (group operations + DM warm-up)	Short-term SMS drives traffic to TG; long-term TG retains
Budget Suggestion	Suitable for small batch testing or low-value products	Suitable for businesses focusing on user retention and needing repeated touch	Suitable for medium-high AOV, clear goal acquisition campaigns

Selection advice:

• If your target market is countries with low TG penetration (e.g., some African countries), SMS-first is sufficient.
• If budget is ample and the product suits community spread (e.g., games, social apps), TG-first combined with gender filtering is recommended.
• If you want both wide coverage and deep operations, dual-channel pass is the safest.

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Frequently Asked Questions

Q: How high is the overlap ratio between SMS-valid and TG-valid numbers generally?

A: It varies greatly by country. For example, in Indonesia, a high TG penetration market, the overlap can reach 30%–50% (i.e., out of every 100 SMS-valid numbers, 30–50 have registered TG). In Europe and the US, the proportion of TG-valid among SMS-valid is likely below 20%. It is recommended to first conduct a small batch test with KK-DATA (e.g., 5,000 records) to calculate the local overlap ratio before deciding on a strategy.

Q: Is there a preferred order for detection when screening numbers with KK-DATA?

A: Yes. Recommended order: first perform carrier detection (SMS/RCS/empty number) to remove invalid numbers; then perform Telegram detection (registration, activity, gender) on the remaining numbers. This significantly reduces the cost of invalid TG detections, as TG detection unit price is usually higher than carrier detection. See real-time prices in the console.

Q: How to choose the “activity window” for TG activity detection?

A: KK-DATA supports custom windows (e.g., 7 days/15 days/30 days). For instant DMs, a 7-day window is recommended, as users who have been online in the last 7 days are more likely to see the message. For group invitations, you can relax to 30 days, because even inactive users can be pulled into groups first and then passively woken up by group pushes. You can first test on a small scale and observe activation rates.

Q: Can SMS delivery be guaranteed for numbers that pass SMS detection?

A: SMS detection only judges whether the number can receive SMS, but it cannot guarantee that the message won’t be filtered by carriers or blocked by the phone. International SMS delivery rates depend on channel quality, typically 85%–95% for correctly detected numbers. It is recommended to choose a stable international SMS provider and include short link tracking in SMS to monitor open rates. KK-DATA only provides screening, not sending; after screening, you can export numbers to connect with third-party SMS platforms.

Q: Which countries does KK-DATA support for number generation and detection?

A: It supports random number generation for 240+ countries/regions, global prefix generation, and custom CSV import. Detection covers Telegram, WhatsApp, iMessage, RCS, empty/carrier, etc. Please refer to the actual list in the console. Generation is free; screening charges per record; you pay as you go, with no subscription package.

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For more documentation, please visit KK-DATA Documentation. To experience directly, log in to Application Console, or contact customer service via Telegram: @kkdata_cc.