Twilio is a cloud communications platform that enables users to make and receive calls, send and receive messages, and more using APIs.
Varies based on usage
Best 2Factor Alternatives ranked by AI · updated Aug 2026
2Factor is an Indian messaging and verification service focused on OTP delivery, SMS APIs, voice calls, and transactional notifications. It is aimed at developers and businesses that need reliable authentication and event-driven messaging.
Top 6 2Factor alternatives
MySMSMantra is an India-focused online service for sending promotional and transactional SMS campaigns. It is aimed at businesses, agencies, and developers needing...
Pros
- Supports promotional and transactional SMS workflows for Indian recipients
- Offers bulk-sending tools alongside API access
- Generally better suited to India-specific sender and compliance requirements than global platforms
Cons
- Less globally extensive than Twilio or Gupshup
- Developer tooling and integrations are narrower than larger CPaaS providers
- Pricing and feature availability depend heavily on message category and registration requirements
Usage-based; pricing varies by SMS type and volume
3
Exotel
Exotel
Exotel is a cloud telephony platform for business calling, IVR, contact centers, and automated outbound communication. It primarily serves businesses in India...
Pros
- Strong fit for Indian business telephony deployments
- Provides IVR, call flows, APIs, and contact-center capabilities
- More extensible than a basic broadcast-only service
Cons
- More complex to configure than a dedicated broadcast dashboard
- Availability and pricing are market-specific
- May require technical resources for advanced automation
4
MSG91
MSG91
MSG91 is a communications platform for businesses sending SMS, voice, email, and WhatsApp messages. It combines campaign tools, APIs, templates, verification flows,...
Pros
- Broader channel coverage than MySMSMantra, including WhatsApp and voice
- Strong India-focused tools for OTP, sender IDs, and messaging compliance
- More mature API, dashboard, and automation capabilities
Cons
- Can be more complex to configure than a basic bulk-SMS service
- International rates vary substantially by destination
- Some advanced features require separate setup or paid plans
Usage-based; pricing varies by country and volume
5
Gupshup
Gupshup
Gupshup is a conversational engagement platform offering SMS, WhatsApp, voice, and other messaging APIs. It targets developers and enterprises building notifications, chatbots,...
Pros
- Much broader omnichannel coverage than MySMSMantra
- Strong APIs and chatbot capabilities for developer-led projects
- Well suited to high-volume enterprise messaging in India
Cons
- More enterprise-oriented and less simple for occasional bulk SMS
- Pricing is less transparent than many self-service SMS tools
- Requires more technical work for advanced conversational workflows
Usage-based; pricing varies by channel and country
6
Fast2SMS
Fast2SMS
Fast2SMS is an Indian bulk messaging service for promotional SMS, transactional SMS, OTPs, and related communication APIs. It targets small businesses, developers,...
Pros
- More accessible for small Indian businesses and one-off campaigns
- Provides both dashboard-based sending and API access
- Supports common promotional, transactional, and OTP workflows
Cons
- Fewer enterprise integrations and channels than MSG91 or Gupshup
- Campaign and automation depth is more limited than full CPaaS platforms
- International capabilities are narrower than Twilio's
Usage-based; rates vary by SMS category and volume
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