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SendSMSGate VS ZelNum

Compare SendSMSGate VS ZelNum and see what are their differences

VoIPstudio
VoIPstudio is an award-winning VoIP system that offers businesses of all sizes a scalable communication solution. Itโ€™s affordable, easy-to-use, offers a full suite of PBX features, and is fully integrated for CRM. featured
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.
Contents:
  1. ยป Base Details
  2. ยป Reviews
  3. ยป Alternatives

SendSMSGate logo SendSMSGate

โœ…Send SMS Bulk and ๐Ÿ“จ๐Ÿ“จ๐Ÿ“จ Service SMS and Viber ads all over the world. ๐Ÿ’ฐCheap rices, round-the-clock support and direct contracts with mobile operators.

ZelNum logo ZelNum

Turn CSV/TXT lists into actionable segments with phone validation, carrier and HLR intelligence, messaging-app, social-account, and crypto-exchange checks, plus API workflows.
  • SendSMSGate Landing page
    Landing page //
    2021-08-04
  • ZelNum
    Image date //
    2026-07-27
  • ZelNum
    Image date //
    2026-07-27
  • ZelNum
    Image date //
    2026-07-27
  • ZelNum
    Image date //
    2026-07-27

ZelNum is a self-service bulk verification and data-quality platform for phone intelligence, messaging apps, social and consumer accounts, and crypto exchanges.

Upload CSV or TXT lists to check phone status, live activity, carrier and line type, HLR-style network signals, phone model, and duplicate or invalid records.

Run phone- and email-based account-signal checks across WhatsApp, Telegram, Facebook, TikTok, iMessage, RCS, Zalo, LINE, Viber, Instagram, LinkedIn, Snapchat, Signal, BAND, Amazon, Apple ID, and Microsoft, together with supported crypto exchanges such as Binance, KuCoin, CoinW, and HTX.

Depending on the product, workflows can include activity, account-age, username, and selected profile signals. Export structured segments for list cleaning, CRM preparation, messaging operations, community management, and data workflows.

Developers can use task-based APIs for batch submission, status monitoring, and result retrieval.

SendSMSGate

Website
sendsmsgate.com
Pricing URL
Official SendSMSGate Pricing
$ Details
-
Platforms
-
Release Date
-
Edit details

ZelNum

Website
zelnum.com
Pricing URL
Official ZelNum Pricing
$ Details
freemium $1.0 (10,000 WhatsApp number checks)
Platforms
Web REST API SaaS
Release Date
2026 May
Edit details

SendSMSGate features and specs

  • Global Reach
    SendSMSGate offers the capability to send SMS messages to almost any country in the world, ensuring broad international coverage.
  • High Delivery Rates
    The service claims to have high delivery rates due to partnerships with numerous local mobile networks.
  • API Integration
    Provides a robust API for developers to integrate SMS functionalities into their own applications seamlessly.
  • Bulk SMS
    Allows users to send bulk SMS messages, which can be beneficial for marketing campaigns and large notifications.
  • User-Friendly Interface
    Offers a straightforward and easy-to-use interface for managing SMS campaigns and viewing reports.
  • Real-Time Reporting
    Provides real-time reporting and analytics, helping users track the progress and effectiveness of their SMS campaigns.

Possible disadvantages of SendSMSGate

  • Cost
    Pricing may be higher compared to some other SMS gateway services, especially for users with low SMS volume requirements.
  • Limited Customization
    Some users might find the level of customization for messages and templates limited compared to more specialized SMS services.
  • Occasional Delays
    There might be occasional delays in message delivery due to factors beyond control, such as network congestion or international routing.
  • Support
    Customer support response times may not always meet user expectations, especially during peak hours or weekends.
  • Regulatory Compliance
    Users are responsible for ensuring compliance with local regulations regarding SMS marketing, which may be complex in different regions.

ZelNum features and specs

  • Bulk Phone Validation
    Validate, normalize and segment phone numbers from CSV or TXT files.
  • Messaging App Checks
    Check selected phone-number and account signals across WhatsApp, Telegram, Facebook, iMessage, RCS, Zalo, LINE, and Viber.
  • Carrier and HLR Lookup
    Identify carrier, country, line type, and HLR-style network signals.
  • Phone Status and Activity Checksใ€‚
    Identify active, inactive, risky, and recently active numbers where supported.
  • Social Account Checks
    Check phone- and email-based account signals across Instagram, TikTok, LinkedIn, Snapchat, Signal, BAND, Amazon, Apple ID, and Microsoft.
  • Crypto Exchange Account Checks
    Check supported phone and email account signals across Binance, KuCoin, CoinW, and HTX.
  • Email Account Checks
    Check email-based account signals across supported platforms and services.
  • Phone Model Detection
    Detect the phone brand and model associated with a mobile number where available.
  • List Cleaning and Segmentation
    Remove duplicate or invalid records and export structured result segments.
  • CSV/TXT Bulk Uploads
    Upload contact lists for batch verification, cleaning, and segmentation.
  • REST API Workflows
    Submit batch tasks, monitor processing status, retrieve results, and integrate verification into applications.

Analysis of SendSMSGate

Overall verdict

  • The overall quality of SendSMSGate can depend on individual requirements and expectations. While some users might find it suitable for their needs, others may encounter challenges. It is important to review customer feedback and potentially trial the service to determine if it matches your specific messaging needs.

Why this product is good

  • SendSMSGate offers a platform for sending SMS messages and could be considered good if it meets specific needs such as user-friendly interface, competitive pricing, and reliable delivery rates. However, user experiences can vary widely based on factors like customer service, integration capabilities, and overall satisfaction.

Recommended for

    SendSMSGate may be recommended for small to medium businesses seeking an SMS solution and individuals needing to send bulk messages efficiently. It is also suggested for those who prioritize cost-effectiveness and straightforward service implementation.

Analysis of ZelNum

Overall verdict

  • BulkChecker.io appears to be a bulk email/domain verification tool designed to help users validate large lists of email addresses to reduce bounce rates and improve deliverability, but as I don't have verified, up-to-date information on this specific service, I'd recommend researching current user reviews, checking recent uptime/accuracy reports, and testing with a small sample before committing to a larger plan.

Why this product is good

  • Bulk verification tools generally save time by processing large email lists quickly compared to manual checks
  • Such services typically help improve email deliverability by removing invalid or risky addresses before sending campaigns
  • May offer API access for integration into existing workflows or CRM systems
  • Often provide tiered pricing that can scale with list size, potentially cost-effective for growing needs

Recommended for

  • Email marketers needing to clean large subscriber lists before campaigns
  • Businesses looking to reduce bounce rates and protect sender reputation
  • Developers wanting API-based email validation integration
  • Users who should independently verify current pricing, accuracy rates, and customer support quality before relying on this specific service

Category Popularity

0-100% (relative to SendSMSGate and ZelNum)

SendSMSGate

ZelNum

Communication
100 100%
Communication
0% 0
Data Validation
0 0%
Data Validation
100% 100
SMS Marketing
100 100%
SMS Marketing
0% 0
Phone Number Validation
0 0%
Phone Number Validation
100% 100

Questions & Answers

As answered by people managing SendSMSGate and ZelNum.

Why should a person choose your product over its competitors?

ZelNum's answer:

ZelNum supports multiple verification types, usage-based pricing, downloadable result segments, and task-based API processing without requiring a subscription.

How would you describe the primary audience of your product?

ZelNum's answer:

Marketing teams, CRM operators, developers, agencies, community managers, and businesses that need to clean or enrich large contact lists.

What makes your product unique?

ZelNum's answer:

ZelNum combines phone validation, carrier lookup, WhatsApp and Telegram checks, and other account signals in one bulk CSV/TXT and API workflow.

User comments

Share your experience with using SendSMSGate and ZelNum. For example, how are they different and which one is better?
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What are some alternatives?

When comparing SendSMSGate and ZelNum, you can also consider the following products

Twilio - Brings voice and messaging to your web and mobile applications.

CheckNumber.AI - CheckNumber.AI provides professional and free WhatsApp number check online service, and provides a professional WhatsApp Number Checker API that can quickly check and detect WhatsApp number in bulk.

E-goi - Email Marketing companies, SMS Marketing, software email marketing.

Numverify - Global phone number validation and lookup API

Clearstream - Clearstream is a SMS marketing and online texting software.

Lookup by Twilio - Know the details behind every phone number

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