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In 2025, Voice OTP (One-Time Password) solutions have become a crucial part of secure digital authentication, helping businesses enhance security while ensuring seamless user experiences. Among the many providers available, FreJun stands out as the best solution due to its AI-driven voice technology, high delivery rates, and real-time authentication capabilities.
If you’re looking for the most reliable, scalable, and efficient Voice OTP providers, this guide covers the top 10 options with a focus on why FreJun is the ultimate choice.
1) FreJun
FreJun is one of India’s best voice OTP providers and caters to all types of businesses. FreJun is also a full-fledged cloud telephony solution that handles A-Z of all your communication needs. Some of the key features offered by FreJun include virtual numbers, click-to-call, autodial, AI insights, and integration with ATSs and CRMs. The platform also offers you a dedicated dashboard. This is to ensure that you can access all their services without having to switch between multiple windows. FreJun comes with a free trial plan. This lets you explore all the core capabilities of FreJun first before making a decision. FreJun offers two affordable plans to suit all budgets. Check out the full pricing details here.
Key Features:
- AI-Powered Call Analytics – Track, analyze, and improve calls.
How FreJun’s AI Enhances Business Communication
- Seamless CRM Integration – Works with Salesforce, HubSpot, and Zoho.
See How FreJun Integrates with Leading CRMs
- Call Recording & Transcription – Automatically log and store call data.
Discover How FreJun’s Call Recording Works
- Enterprise-grade security – GDPR-compliant with encryption.
- Virtual Numbers & Auto Dialing – Expand business reach globally.
Explore FreJun’s Virtual Phone Solutions
- Multi-Device Compatibility – Use on desktop, mobile, and VoIP phones.
Pricing: Standard: Begins at $14.49 per user, per month.
Professional: Starts at $16.69 per user, per month.
G2 Rating: 4.9/5 (Read Reviews)
2) SMSala
The voice OTP service provided by SMSala is suitable for businesses of all sizes and industries, including healthcare, e-commerce, insurance, and banking. The best part about SMSala is that it can deliver your OTP irrespective of the user’s location. It has a global coverage spanning 190 countries and 800 networks with best-in-class delivery rates. SMSala also offers the back-end logic required for OTP generation. This means you don’t have to worry about generating unique OTP for thousands of customers on a daily basis. The platform can also catch invalid numbers as they are entered so that your OTP is always sent to a valid number.
Key Features
- Global SMS Coverage – Send messages to over 200 countries.
- Bulk SMS Sending – Efficiently send thousands of messages at once.
- High Delivery Rate – Ensures messages reach recipients quickly.
- Two-Way Messaging – Supports customer engagement via replies.
- API Integration – Easy integration with CRM, ERP, and websites.
- Personalized Messaging – Customizable SMS templates for businesses.
- OTP & Transactional SMS – Secure authentication and alerts.
- Campaign Analytics – Real-time tracking and reporting of SMS campaigns.
- DND Filtering – Avoid sending messages to numbers on the Do Not Disturb list.
Pricing: Basic Plan- 0.017 EUR
G2 Rating– NA
3) Authkey.io
Authkey is a communication platform that offers voice, SMS, and email services to its clients. Voice OTP service is one of its core capabilities and is used by many of its customers. You can either use automated phone calls to send voice OTP directly or use it as a fallback option for your SMS OTP. They have a strong network of over 220+ carriers present in over 200 countries, thereby ensuring that your customers will receive their voice OTP from any part of the world. They have multiple pricing plans and even offer volume-based discounts, making it a great choice for all those handling large volumes of customers.
Key Features
- Omnichannel Communication – Supports SMS, Voice, Email, and WhatsApp APIs.
- Fast & Secure OTP Delivery – Ensures quick authentication for users.
- AI-Powered Routing – Optimizes message delivery for higher success rates.
- Global Reach – Send messages across multiple countries seamlessly.
- Two-Way Messaging – Enables interactive customer communication.
- Bulk Messaging – Send promotional and transactional messages at scale.
- Developer-Friendly APIs – Easy integration with applications, CRM, and websites.
Pricing: Growth Plan- 999 per month
G2 Rating– 4.9 out of 5
4) Mtalkz
Mtalkz voice OTP service helps your business by adding an additional security layer to your customer accounts. Its voice OTP caters to both national and international locations, making this a good option for all those businesses with global customers. They also have dedicated connectivity with several telecom networks to reduce delays and minimise non-delivery. And to avoid message failure, they also offer configurable re-trial attempts. You also get access to dashboard reports to ensure that you always stay on top of your customer security. Besides voice OTP service, Mtalkz also offers solutions like bulk SMS, IVR, number masking, missed call service, 2-way messaging, and international messaging.
Key Features
- Omnichannel Communication – Supports SMS, Voice, WhatsApp, Email, and RCS messaging.
- Bulk SMS & Voice Calls – Send promotional and transactional messages at scale.
- Fast & Secure OTP Delivery – Reliable authentication for user verification.
- WhatsApp Business API – Automate customer interactions on WhatsApp.
- AI-Powered Chatbots – Enhance customer engagement with automated responses.
- Real-Time Analytics & Reports – Track message delivery, open rates, and user engagement.
- Cloud-Based Messaging – Scalable, secure, and accessible from anywhere.
Pricing: Basic Plan- 999 per month
G2 Rating: 4.7 out of 5
5) Deepcall
Deepcall is a leading voice OTP service provider in India and offers an easy way to manage user verification. The platform is one of the easiest to set up, and their voice OTP service can be activated in a matter of few minutes. This means you don’t need any special equipment or a dedicated team to manage the authentication process. They also have several affordable plans catering to all budgets. They also offer an integrated solution, which ensures that you can easily manage and track all your data within the same platform. Deepcall also offers a robust analytics dashboard which gives you the flexibility to view reports whenever and wherever you want.
Key Features
- Cloud-Based Voice Solution – Enables scalable and flexible communication.
- AI-Powered Call Routing – Ensures high-quality voice calls with intelligent routing.
- Secure & Reliable Voice OTP – Fast authentication for user verification.
- IVR (Interactive Voice Response) – Automate customer interactions efficiently.
- Click-to-Call API – Seamless integration with websites and apps for instant calling.
- Call Recording & Analytics – Monitor and analyze call performance in real-time.
- Multi-Language Support – Delivers messages and calls in multiple regional languages.
- CRM & API Integration – Easily connects with business tools like CRM and ERP.
- Two-Way Voice Communication – Enables interactive conversations with customers.
Pricing: Contact Deepcall for pricing details.
G2 Rating: NA
6) SMSCountry
If your goal is to safeguard your user data and reduce the occurrence of fraud and scams, then the voice OTP services of SMSCountry can help you. They offer 100% delivery assurance with OTP converted to speech and sent over a call. They have a simple and well-documented API that enables you to send voice-based OTPs directly from your website or application in less than 30 minutes. The platform also lets you send OTPs from a custom sender ID so that your recipients know where the OTP is coming from. You can even set the length and expiry time of the OTP.
Key Features
- Bulk SMS Messaging – Send promotional and transactional messages at scale.
- Voice OTP & Calls – Secure authentication with fast voice-based OTP delivery.
- WhatsApp Business API – Automate and enhance customer engagement on WhatsApp.
- Two-Way Messaging – Enable interactive conversations with customers.
- High Delivery Rates – Optimized routing ensures reliable message delivery.
- Real-Time Tracking & Analytics – Monitor delivery status and campaign performance.
- DND & Compliance Filtering – Ensures messages are sent only to valid numbers.
Pricing: Contact SMSCountry for Pricing details.
G2 Rating: 4.8 out of 5
7) Way2smart
Way2smart is a premium voice OTP solution provider that caters predominantly to Indian customers. Many local businesses use their voice OTP services for account deletion and activation, where it is very important to ensure the authenticity of the user and to ensure that the customer data remains secure. The best part about Way2smart is their transparency. They have no setup cost, license cost, or even monthly fee. You just pay for what you use. Also, it is one of the few platforms to offer a free trial for 15 days for all registered users. This is quite useful for all those who would like to try the efficacy of the services before committing for a long time.
Key Features
- Bulk SMS Services – Send promotional and transactional messages efficiently.
- Voice OTP & Calls – Secure authentication with quick voice-based OTP delivery.
- WhatsApp Business API – Automate customer interactions on WhatsApp.
- Two-Way Messaging – Enable real-time customer engagement through SMS replies.
- High Delivery Rates – Optimized message routing ensures reliable delivery.
- Real-Time Analytics & Reports – Track SMS campaigns with live insights.
- DND & Spam Protection – Ensures compliance with regulations and filters invalid numbers.
- Multi-Language Messaging – Supports regional and global languages for better reach.
Pricing: 5000 messages- 1599
G2 Rating: NA
8) Sarv
Like FreJun, Sarv is more than a voice OTP provider. It is a full-fledged cloud telephony software that can handle most of your business communication needs. Sarv’s voice OTP solution is fully API-based, which means you can start initiating OTP calls to your customers in minimal time. Sarv has been predominantly used by call centres owing to the huge variety of features offered by them for making outbound calls. This includes voice broadcasting, host your own number, toll-free number, virtual phone number, voicemail, and click-to-call, to name a few.
Key Features
- Bulk SMS & Voice Solutions – Send promotional and transactional messages at scale.
- Voice OTP & IVR Services – Secure authentication with instant voice-based OTP delivery.
- Cloud-Based Contact Center – Manage calls, SMS, and customer interactions efficiently.
- WhatsApp Business API – Automate customer support and engagement via WhatsApp.
- Two-Way Messaging – Enable interactive conversations with customers.
- AI-Powered Call Routing – Ensures high call connectivity and voice clarity.
- Real-Time Analytics & Reports – Track campaign performance and message delivery.
- DND & Compliance Filtering – Ensures messages reach valid recipients only.
- Multi-Language Messaging – Supports regional and global languages for better outreach.
- API & CRM Integration – Easily integrates with business applications, ERP, and CRM software.
Pricing: Contact Sarv for pricing details.
G2 Rating: 5.0 out of 5
9) Salesquared
Salesquared is one of the best cloud-based voice OTP providers that lets you send thousands of voice OTP calls parallelly. Their payment model is also simple and charges you only based on your usage. No hidden fees or last-minute surprises. Salesquared offers a delivery rate of around 95%, which is one of the highest in the industry. This also means all your customers can be verified instantly without any delays or errors. In fact, Salesquared claims that their voice OTP reaches all the users in less than 7 seconds. They also have a free trial plan, giving you the option to try the platform before making any payment.
Key Features
- Bulk SMS & Voice Solutions – Send promotional, transactional, and OTP messages at scale.
- Voice OTP & IVR Services – Secure authentication with instant voice-based OTP delivery.
- Cloud Telephony Services – Manage calls and SMS communications on a single platform.
- WhatsApp Business API – Automate customer engagement via WhatsApp messaging.
- Two-Way Communication – Enable interactive conversations via SMS and voice calls.
- Click-to-Call API – Instant customer calling for improved lead conversions.
- AI-Powered Call Routing – Ensures high-quality voice connectivity with intelligent call handling.
- Real-Time Analytics & Reports – Track message delivery, call logs, and campaign performance.
- DND & Compliance Filtering – Ensures messages are sent only to valid, opt-in numbers.
Pricing: IVR API Nano- 5555 for 75 days
G2 Rating: NA
Conclusion
As we have seen in this post, several voice OTP providers have emerged in recent years, mainly to offer a compelling alternative to traditional authentication methods. Each of the platforms highlighted in this post comes with a unique set of features without compromising security measures. Whether you are a financial institution ensuring safe transactions or an e-commerce business verifying customer accounts, there is a voice-based OTP solution out there for you.
Choosing the right Voice OTP provider is essential for ensuring secure, reliable, and fast user authentication. While several providers offer OTP solutions, FreJun stands out as the best choice in 2025 due to its AI-powered instant delivery, superior security, and customizable features.
If you’re looking for a fast, secure, and scalable Voice OTP provider, FreJun is the solution you need! 🚀
Further Reading: Voice-Based OTP Authentication: Boosting Security & Convenience
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