Reliable SMS API for Fast, Secure SMS Verification Codes
Protect your users, reduce drop-offs, and secure your digital ecosystem with lightning-fast OTP delivery. Our high-deliverability SMS API is engineered to ensure your SMS verification code reaches your users instantly, every single time — regardless of their global location or mobile carrier.
The Hidden Cost of Poor OTP Delivery
Many businesses underestimate the financial impact of a subpar authentication process. Using a cheap or unreliable API for SMS messaging often leads to latency issues where messages take several minutes to arrive or fail to deliver entirely. When an SMS OTP code fails to arrive within the first 15 seconds:
30% of users will abandon the sign-up or login process entirely.
Support tickets surge as users repeatedly click "resend code," overwhelming your helpdesk.
Security risks increase if users resort to less secure fallback methods.
We solve this problem at the infrastructure level. By maintaining direct, Tier-1 connections with global mobile network operators (MNOs), we eliminate the middlemen that cause delays.
Why Choose Our API for SMS Messaging?
Building secure, scalable authentication shouldn't be a bottleneck for your software engineers. We provide a robust, modern API for SMS messaging designed specifically for high-priority transactional alerts and identity verification.
Global Reach with Local Reliability
Bypass international network congestion with our intelligent, direct carrier connections. This ensures your SMS OTP code arrives in seconds, whether your users are sitting in an office in Kuala Lumpur or traveling across the globe. Our intelligent routing dynamically selects the fastest telecom path to the handset.
Intelligent Omnichannel Fallback & AI Automation
Attempt a WhatsApp SMS verification first to leverage encrypted rich media. If the user doesn't have WhatsApp active, our system instantly triggers a fallback to a standard SMS code, ensuring a 99.9% delivery rate. Your customer service AI chatbots can independently trigger an OTP too.
Bank-Grade Security & Compliance
Encrypted transit and strict data privacy compliance mean you can safely verify users without compromising sensitive data. We support SOC2 compliance standards, end-to-end encryption for API payloads, and automatic redaction of message content in logs.
Seamless Ecosystem Integration
Plug the verification flow directly into your existing architecture. It pairs perfectly with broader communication workflows, easily syncing with your CRM, identity management providers (like Auth0 or Okta), and internal support dashboards.
Own It Yourself
Build your company brand by leveraging our ready-for-integration SMS API.
💬 WhatsApp Us
Enterprise-Grade Use Cases: Secure Every Platform
Consumers today expect the same frictionless, invisible security they experience with the world's leading tech giants. Utilize our SMS messaging API to build custom authentication flows for:
Two-Factor Authentication (2FA) & MFA
Password theft is at an all-time high. Send secure login prompts that look and feel just like a Google verification code SMS. Protect user accounts, employee portals, and internal databases from unauthorized access with instantly generated, time-sensitive cryptographic tokens.
App Onboarding and Social Logins
Launching a new mobile application? Guarantee a smooth signup process. Our API flawlessly handles high-volume user onboarding, matching the speed and reliability of a WeChat SMS verification or a standard WhatsApp SMS verification.
Transaction Authorization & Fintech Operations
Add a critical, mandatory layer of security to fintech platforms, crypto exchanges, and e-commerce checkouts. Force users to verify their identity before approving password resets, profile changes, large fund transfers, or new payee additions.
Healthcare & Secure Patient Portals
Ensure compliance with strict data protection regulations by requiring patients to verify their identity via SMS before accessing sensitive medical records, booking appointments online, or communicating with telehealth professionals.
Technical Superiority & Rapid Deployment
We know developers hate clunky documentation, legacy SOAP protocols, and opaque error codes. That's why the Yaeris Console REST API is lightweight, intuitive, deeply documented, and ready to deploy in a matter of minutes.
Modern RESTful Architecture & Template-Based Security
To ensure uncompromising security, rapid delivery, and compliance with telecom regulations, our system utilizes a strict template-based approach. You simply create an SMS template in the Yaeris Console, get it approved by an admin, and the API will automatically generate and securely insert the one-time password into the {otp} placeholder of your message. Authentication is straightforward — include your API key in the Authorization header as a Bearer token.
curl -X POST https://app.abc.com/api/otp/send \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_API_TOKEN" \
-d '{"phone": "60123456789", "template_id": 1}'Note on Formatting: To guarantee delivery routing, phone numbers must use the E.164 format strictly without the + prefix — e.g. a Malaysian mobile number must be submitted as 60123456789.
Intelligent Responses & Transparent Credit Pricing
Our SMS messaging API doesn't just push messages blindly; it returns rich, actionable data in a standard JSON format. A successful 200 OK response provides the generated otp_code, the exact expires_at timestamp, a unique message_id, and your real-time credit ledger (credits_deducted / credits_remaining). Domestic Malaysian numbers deduct 1.0 credit per SMS; all other international country codes deduct 3.0 credits.
// Example: Successful 200 OK Response
{
"status": "success",
"otp_code": "482916",
"expires_at": "2026-03-15T12:05:00+00:00",
"message_id": "MSG_ABC_123",
"credits_deducted": 1.0,
"credits_remaining": 99.0
}Comprehensive Error Handling & Built-In Rate Limiting
Forget generic failure messages. The Yaeris Console API provides detailed, developer-friendly HTTP status codes to streamline your application's error handling and UI logic:
402 Payment Required
Accurately alerts your system of insufficient balances by returning both credits_required and credits_available, allowing your application to automatically trigger low-balance warnings before service halts.
422 Unprocessable Entity
Immediately informs you if your payload is missing a required parameter or if your specified template_id is currently unapproved or pending.
429 Too Many Requests
We protect your budget from malicious SMS toll fraud and bot attacks at the network level. Our API enforces a strict rate limit of one OTP request every 30 seconds per phone number, and a maximum of 10 requests per minute per tenant.
502 Bad Gateway
Provides immediate feedback if SMS delivery fails at the downstream telecom carrier level, allowing you to instantly trigger fallback authentication methods.
Maximize Deliverability: Best Practices for SMS OTP
To get the absolute best results when you verify your users, we recommend following these industry best practices, all of which are supported natively by our platform:
Implement Validity Periods
OTPs should not last forever. Use our validity_period parameter to automatically expire a message at the carrier level if a phone is turned off, ensuring a stale code isn't delivered hours later.
Include Security Warnings
Always include text like "Do not share this code with anyone, including our staff" within the payload to protect your users from social engineering and phishing attacks.
Monitor Conversion Metrics
Use our analytics dashboard to track the ratio of "Codes Sent" versus "Codes Successfully Verified" in your app to identify UI bottlenecks in your authentication flow.
Choose the Plan That Fits Your Business Needs
5,000 Credits
US$0.0572/credit
- ✓ Malaysia number = 1 credit
- ✓ International number = 3 credits
- ✓ Fast OTP deliverability
- ✓ Set own OTP template
- ✓ Direct delivery from carrier
- ✓ RESTful Architecture
- ✓ Template-Based Security
- ✓ Access to SMS API Dashboard
- ✓ SMS API Report
- ✓ No Expiry Date
- ✓ Comprehensive Error Handling
- ✓ Built-in Rate Limit
- ✓ SMS OTP Template Approval Required
10,000 Credits
US$0.0515/credit
- ✓ Malaysia number = 1 credit
- ✓ International number = 3 credits
- ✓ Fast OTP deliverability
- ✓ Set own OTP template
- ✓ Direct delivery from carrier
- ✓ RESTful Architecture
- ✓ Template-Based Security
- ✓ Access to SMS API Dashboard
- ✓ SMS API Report
- ✓ No Expiry Date
- ✓ Comprehensive Error Handling
- ✓ Built-in Rate Limit
- ✓ SMS OTP Template Approval Required
50,000 Credits
US$0.04286/credit
- ✓ Malaysia number = 1 credit
- ✓ International number = 3 credits
- ✓ Fast OTP deliverability
- ✓ Set own OTP template
- ✓ Direct delivery from carrier
- ✓ RESTful Architecture
- ✓ Template-Based Security
- ✓ Access to SMS API Dashboard
- ✓ SMS API Report
- ✓ No Expiry Date
- ✓ Comprehensive Error Handling
- ✓ Built-in Rate Limit
- ✓ SMS OTP Template Approval Required
Use SMS API To Send OTP Messages
Most of our worldwide clients use our services.
There's More Ways to Verify
Besides SMS API for OTP code, you can also choose to use WhatsApp API to verify instead. We provide SMS and WhatsApp seamless ecosystem integration.
Frequently Asked Questions
How long does it take for an SMS verification code to arrive?
Our average global delivery time is under 3 seconds. Because we segment promotional marketing traffic away from transactional traffic, your OTPs are pushed to the very front of the carrier queue to ensure immediate delivery.
Can I use this API for marketing and promotional blasts?
While this specific API endpoint is heavily optimized for transactional alerts and OTPs, we do offer comprehensive messaging solutions for marketing. If you are looking to send promotional campaigns, you can utilize our bulk messaging endpoints or our integrated WhatsApp blasting services to reach your audience effectively.
How do I pay for the SMS API usage?
We operate on a transparent, pay-as-you-go model. There are no hidden monthly licensing fees or mandatory minimum contracts for standard usage. You only pay for the messages you successfully send. For high-volume enterprise clients processing millions of verifications, we offer customized bulk volume pricing tiers.
Do you support local number formatting?
Yes. Our API includes built-in number parsing and validation. Even if your user types their number as 012-345-6789 or +60123456789, our system automatically sanitizes and formats the destination number to E.164 international standards before attempting delivery, drastically reducing failed sends due to user typos.
Is it possible to test the API for free?
Absolutely. We provide a sandbox environment and complimentary testing credits when you create a developer account. You can test payloads, simulate webhooks, and evaluate delivery speeds before entering a credit card.
Testimonials
Our clients work closely with us, and we always strive to give everyone a great experience — even when something needs troubleshooting, we follow through until it's resolved.
“Yaeris transformed our content workflow overnight. Their AI-powered keyword research and CMS publishing cut our article production time by over 60%, and the real-time dashboard gives us instant visibility into campaign performance. Highly recommended for any Malaysian marketing team!”
“We engaged Yaeris to automate our digital ad creation and reporting. Within weeks, our ad copy generation went from days to minutes, and the consolidated Google Sheet dashboard provides live insights that keep our Singapore office agile. A game-changer for productivity!”
“Yaeris's AI agent revamped our monthly analytics process. Automating data consolidation and generating actionable recommendations saved us 80% of report-prep time. Their tailored solution helped our leadership make faster, data-driven decisions.”
“As a SEO manager, I juggle content creation, SEO research, and client outreach. Yaeris's no-code automation tools handle everything from backlink checks to cold email campaigns, freeing me to focus on strategy. My turnaround time has never been better!”
“Yaeris helped us integrate AI-driven dataset matching with automated outreach, boosting our lead conversion by 35%. Their seamless implementation and ongoing support made adoption across our Selangor offices effortless.”
“Their WhatsApp Marketing helps us to reach our intended audience in 24 hours.”
“Their response time is very fast. They are very attentive to us. They are also very transparent with us.”
“Even though sometimes there is a technical problem occurs, they still try to solve the problem within a certain timeframe and revert back to us.”
Ready to Secure Your Application and Boost Conversions?
Stop losing valuable users and revenue to slow, unreliable OTP deliveries. Integrate the fastest, most reliable SMS API on the market.
💬 Talk to Our Technical Sales Team