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Secure authentication & transactions
OTP Verification
Enterprise-grade digital authentication with low latency, guaranteed delivery, and fallback to Voice.
The SMS platform enterprises rely on
Deliver mission-critical alerts, OTPs, and campaigns at scale - with the speed, reliability, and compliance global enterprises demand.
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99.99%
uptime
<1 second
OTP delivery
1B+
messages processesd daily
Built for enterprise-grade messaging
High delivery assurance
Direct operator connectivity, intelligent fallback, and high-throughput ensure your messages always reach customers.
Fast & reliable
Sub-second delivery for OTPs and service alerts with proven performance at enterprise scale.
Fully compliant
Automated DLT registration, template approvals, and audit-ready reporting help you stay aligned with regulations effortlessly.
Seamless integration
Lightweight APIs and SDKs connect with CRMs, ERPs, apps, and marketing platforms. A single API powers SMS, Email, and Voice.
Actionable insights
Real-time delivery reports, campaign performance insights, and ROI tracking for a clear view of outcomes.
Scalable for growth
Effortlessly handle millions of messages during festive peaks or nationwide campaigns, backed by global operator coverage.
Secure & robust infrastructure
AES-encrypted at every point, designed to meet the highest enterprise data privacy and security standards.
Advanced segmentation & targeting
Use Smart Links© and Smart Codes to segment customers by actions or inactions, and run contextual, personalised campaigns optimised in real time.
Solutions tailored for every need
Power API - Secure, high-speed SMS for transactions
Built for banks, fintechs, and all enterprises that need fast, compliant delivery at scale.
Build conversational Quick integration via JSON / XML; single API for SMS, Email, and Voicerelationships, not one-way alerts.
AES-256 encryption for PII, VAPT-certified platform
<1 second OTP delivery, throughput up to 80,000 SMS/sec
Configurable retry, expiry, and fallback including alternate channel - Voice
Real-time DLRs, webhooks, and operator-level failover routing
OTP Plus - Guaranteed OTP delivery with enterprise security
Handles 170M+ OTPs and alerts every month with <0.001% deviation from benchmarks.
Tier-III datacentres across geographies with a redundant private-cloud setup
PT / CERT-IN / OSTMM3 / OWASP certified; AES encryption at rest with customer-specific keys
20,000+ dedicated OTP TPS operating at <30% capacity for peak loads
Dedicated operator SMPP links, configurable retry policies, multi-channel fallback to Voice
Real-time interim delivery reports, latency dashboards, and historic trend analysis
24/7 monitoring with OTP-dedicated support queue
Notify One - Secure group & operational messaging
Purpose-built for internal teams, field staff, and operational alerts requiring compliance.
Group hierarchy management with multiple access levels
Web UI + API triggers for automated, event-driven notifications
VMN/longcode support with optional two-way messaging
Audit-ready logs, role-based access, and exportable reports
Supports SMS, Voice, and Email with regional language delivery
Connect One - Unified SMS & WhatsApp platform for enterprises
On-premise or cloud deployment, enabling secure communication across 200+ enterprise systems.
On-premise option for compliance-driven industries
Advanced campaign manager and file processor for personalised bulk sends
Business rule engine to automate messages from system events and schedules
Interactive two-way messaging engine with template/group management
Single integration point for SMS and WhatsApp in enterprise workflows
Global One - Two-way SMS with automation & SIM binding
Complete inbound/outbound SMS platform with automation and fraud-prevention capabilities.
Dedicated VMNs and shortcodes for high-volume reply handling
Keyword automation, auto-replies, and API-forwarding via JSON or QueryString
AES-encrypted payloads, real-time dashboards, and exportable reporting
SIM Binding for BFSI use cases: SIM swap prevention, device binding, and transaction validation
Advanced campaign management with click/open tracking and two-way analytics
Power API - Secure, high-speed SMS for transactions
Built for banks, fintechs, and all enterprises that need fast, compliant delivery at scale.
Build conversational Quick integration via JSON / XML; single API for SMS, Email, and Voicerelationships, not one-way alerts.
AES-256 encryption for PII, VAPT-certified platform
<1 second OTP delivery, throughput up to 80,000 SMS/sec
Configurable retry, expiry, and fallback including alternate channel - Voice
Real-time DLRs, webhooks, and operator-level failover routing
OTP Plus - Guaranteed OTP delivery with enterprise security
Handles 170M+ OTPs and alerts every month with <0.001% deviation from benchmarks.
Tier-III datacentres across geographies with a redundant private-cloud setup
PT / CERT-IN / OSTMM3 / OWASP certified; AES encryption at rest with customer-specific keys
20,000+ dedicated OTP TPS operating at <30% capacity for peak loads
Dedicated operator SMPP links, configurable retry policies, multi-channel fallback to Voice
Real-time interim delivery reports, latency dashboards, and historic trend analysis
24/7 monitoring with OTP-dedicated support queue
Notify One - Secure group & operational messaging
Purpose-built for internal teams, field staff, and operational alerts requiring compliance.
Group hierarchy management with multiple access levels
Web UI + API triggers for automated, event-driven notifications
VMN/longcode support with optional two-way messaging
Audit-ready logs, role-based access, and exportable reports
Supports SMS, Voice, and Email with regional language delivery
Connect One - Unified SMS & WhatsApp platform for enterprises
On-premise or cloud deployment, enabling secure communication across 200+ enterprise systems.
On-premise option for compliance-driven industries
Advanced campaign manager and file processor for personalised bulk sends
Business rule engine to automate messages from system events and schedules
Interactive two-way messaging engine with template/group management
Single integration point for SMS and WhatsApp in enterprise workflows
Global One - Two-way SMS with automation & SIM binding
Complete inbound/outbound SMS platform with automation and fraud-prevention capabilities.
Dedicated VMNs and shortcodes for high-volume reply handling
Keyword automation, auto-replies, and API-forwarding via JSON or QueryString
AES-encrypted payloads, real-time dashboards, and exportable reporting
SIM Binding for BFSI use cases: SIM swap prevention, device binding, and transaction validation
Advanced campaign management with click/open tracking and two-way analytics
Power API - Secure, high-speed SMS for transactions
Built for banks, fintechs, and all enterprises that need fast, compliant delivery at scale.
Build conversational Quick integration via JSON / XML; single API for SMS, Email, and Voicerelationships, not one-way alerts.
AES-256 encryption for PII, VAPT-certified platform
<1 second OTP delivery, throughput up to 80,000 SMS/sec
Configurable retry, expiry, and fallback including alternate channel - Voice
Real-time DLRs, webhooks, and operator-level failover routing
OTP Plus - Guaranteed OTP delivery with enterprise security
Handles 170M+ OTPs and alerts every month with <0.001% deviation from benchmarks.
Tier-III datacentres across geographies with a redundant private-cloud setup
PT / CERT-IN / OSTMM3 / OWASP certified; AES encryption at rest with customer-specific keys
20,000+ dedicated OTP TPS operating at <30% capacity for peak loads
Dedicated operator SMPP links, configurable retry policies, multi-channel fallback to Voice
Real-time interim delivery reports, latency dashboards, and historic trend analysis
24/7 monitoring with OTP-dedicated support queue
Notify One - Secure group & operational messaging
Purpose-built for internal teams, field staff, and operational alerts requiring compliance.
Group hierarchy management with multiple access levels
Web UI + API triggers for automated, event-driven notifications
VMN/longcode support with optional two-way messaging
Audit-ready logs, role-based access, and exportable reports
Supports SMS, Voice, and Email with regional language delivery
Connect One - Unified SMS & WhatsApp platform for enterprises
On-premise or cloud deployment, enabling secure communication across 200+ enterprise systems.
On-premise option for compliance-driven industries
Advanced campaign manager and file processor for personalised bulk sends
Business rule engine to automate messages from system events and schedules
Interactive two-way messaging engine with template/group management
Single integration point for SMS and WhatsApp in enterprise workflows
Global One - Two-way SMS with automation & SIM binding
Complete inbound/outbound SMS platform with automation and fraud-prevention capabilities.
Dedicated VMNs and shortcodes for high-volume reply handling
Keyword automation, auto-replies, and API-forwarding via JSON or QueryString
AES-encrypted payloads, real-time dashboards, and exportable reporting
SIM Binding for BFSI use cases: SIM swap prevention, device binding, and transaction validation
Advanced campaign management with click/open tracking and two-way analytics
Karix is proud for its unmatched scale and global capabilities
Player of choice in India across industries leaders
Powering every customer interaction
Customer engagement & retention
Promotional SMS
High-volume, personalised campaigns with segmentation and retargeting for sales, launches, and reactivation.
Information on demand
On-demand SMS queries
Customers can request real-time information such as account balances, reports, or inventory through simple SMS prompts.
Enterprise success stories
Read More Case Studies
12M+
monthly SMS interactions with customers
100+
keywords actively managed on short code 5616161
Tata Motors: Nationwide SMS campaigns for customer engagement
Karix powers Tata Motors’ customer service, lead generation, and test drive management through a robust two-way SMS solution integrated with their Siebel CRM.
Get started with Karix’s SMS Solution today
Every OTP, alert, and campaign is delivered with scale, compliance, and control. Built for mission-critical use cases where reliability is non-negotiable.
20,000+ TPS capacity
Built for scale
Regulatory compliance built in
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FAQ's
Which interfaces are supported for bulk voice campaigns?
UI portal, API, FTP or SFTP.
Can the same virtual number handle missed calls and SMS?
Yes, with configuration.
How does voice OTP differ from SMS OTP?
Voice PIN delivery as a failover for 2FA.
What languages are supported in voice broadcasts?
Multiple Indian regional languages.
What is call masking?
Bridging virtual numbers to protect privacy, with PIN and reporting options.
Can the same 10-digit Virtual number be used for both missed calls as well as SMS pull service?
Yes. With prior information, both services can be activated on the same number.
What is call patching?
During an ongoing call (outbound/inbound), call patch allows your customers to connect with your customer care executives in case they have any queries pertaining to services.
What is TTS (Text-To-Speech) service?
Text-to-speech service allows businesses to directly broadcast texts (multi-lingual) to natural-sounding speech/audio.
What are the different interfaces used to do bulk voice campaigns?
Businesses can broadcast a bulk voice campaign using the following method:-
1. User Interface/ UI portal
2. API
3. FTP / SFTP
What is a missed call solution?
Missed call service allows your customers to call on a predefined number for e.g. 10 10-digit Virtual Number or Toll-free number or DID number (landline) at zero cost. The call will get disconnected automatically post 1 or 2 rings. During a missed call you either play a plain ring or a few-second voice message.
What are the uses and benefits of the missed call solution?
- Lead generation: You can generate leads and engage your customers.
- Info on demand: Push requested information on demand post missed call via SMS/automated voice call, etc. e.g. Request for balance check or new cheque book request.
- Verify Number: You can verify the user number through a missed call, wherever the mobile number verification process is mandatory.
- Callback Services: Your customer care executives can call back the user, giving a missed call or push an automated pre-recorded voice call.
- Voting / Polling tool: Get customer feedback.
a Tanla company is a strategic growth partner to enterprises, enabling meaningful, secure, and scalable customer engagements across the most trusted and emerging communication channels. With a future-forward mindset, agile execution, and a 25+ year legacy of innovation, we drive outcomes — not just outputs.
