Conversational modules
Programmable Channels
Platform functionality
Business segments
Industry verticals
Department
Our services
Solutions for telecoms
See why leading telecoms around the world choose Infobip to transform their network
Create new B2B revenue streams with our omnichannel communications platform
Telecom core & security
Secure your network from SMS and Voice fraud with our firewall that protects 120+ operators
Ensure all A2P SMS traffic is properly charged and eliminate revenue leakage with our SMS Firewall
Community & Resources
Knowledge hub
Title
Send secure SMS one-time passcodes (OTP) with a trusted service provider
SMS OTP is a reliable and effective solution to enhance privacy and security while simplifying access to your platform or data.
What is SMS OTP, and why should you use it?
SMS OTP (One-Time Password or One-Time PIN) is a security mechanism that sends a unique, time-sensitive code via SMS. It is used as a part of a two-factor authentication (2FA) system to verify a user’s identity during login or sensitive transactions.
Implementing 2FA is crucial in many industries to comply with data protection and security requirements, and SMS is one of the simplest and most cost-effective ways to do that.
Security first
Secure your platform with Infobip’s SMS OTP service—reliable, fast, and strong encryption to keep OTPs confidential. We ensure security without disrupting the user experience, and customize OTP messages to align with your brand.
Global reach and reliability
Providing global coverage and highly reliable OTP message delivery. With our SMS OTP service, messages are sent promptly, guaranteeing security and peace of mind across all regions.
Scalability for enterprises
It scales effortlessly with your business, from startups to global enterprises. With flexible pricing and strong security, our solutions grow with you.
Compliance and data privacy
As a leading SMS OTP provider, we ensure full compliance with global data privacy regulations, including GDPR. We prioritize secure and responsible management of your customer data.
Benefits of Infobip’s SMS OTP service
Strengthen security and enhance user experience with SMS solutions. Get started today and discover how our trusted SMS OTP service can protect your business.
Integrate with ease
Integrate Infobip’s SMS OTP service with your existing systems using our user-friendly SMS API and SDKs. Enjoy smooth adoption with minimal disruption to your operations.
Create a personalized OTP experience
Customize your OTP messages with Infobip to match your brand’s identity, from code length to expiration time and sender ID. Ensure every OTP not only secures transactions but also strengthens your brand presence.
Gain actionable insights with advanced analytics
Track the performance of your OTP SMS service with Infobip’s advanced analytics and reporting tools. Gain valuable knowledge to optimize authentication and make informed decisions to enhance your platform’s security.
Reach users anywhere with Multi-Channel delivery
Infobip offers multi-channel OTP delivery via SMS, WhatsApp, email, and push notifications. This flexibility allows users to choose their preferred method, ensuring convenience and security without compromise.
See what our customers have achieved with our SMS OTP service
We are very satisfied with Infobip’s delivery rates that are over 97%, and that is why they are our main provider of SMS solution for one-time pin delivery. OTP delivery is a crucial part of our business and because of high delivery rates and technical support we value our cooperation with the company very much.
Romain Pichard
Product Owner, Yousign
Case studies
Spoon Radio: 80% reduction in subscriber sign-up churn with an optimized 2FA Authentication solution from Infobip
-
80%
reduction in subscriber churn
Bukalapak: Increasing client account security with two-factor authentication
-
4-5%
increase in delivery rates
Kakao: Increasing new user conversion rate to more than 90% with reliable one-time PIN delivery
-
90%
increase in new-user conversion rate
Leanpay: 20% month-on-month growth in registered users with two-factor authentication
-
20%
month-on-month registered user growth
{{title}}
-
{{meta.stats[0].number}}
{{meta.stats[0].content}} -
{{meta.stats[1].number}}
{{meta.stats[1].content}} -
{{meta.stats[2].number}}
{{meta.stats[2].content}}
Examples of SMS OTP use cases in other industries
Public services
Authenticating personnel accessing critical systems (e.g. police and fire departments or emergency response teams).
Delivery services
Verifying personnel and ensuring secure package handling.
Educational institutions
Securing access to student portals, course registrations, and academic resources.
Hotels and airlines
Enhancing security during online bookings, reservation changes, and loyalty program interactions.
How does SMS OTP verification work?
User enters the phone number
User receives the PIN
User enters the PIN
The number is verified
How to choose an SMS OTP provider
Choosing the right SMS OTP provider is crucial for ensuring security and reliability of the authentication process. Let’s explore the key criteria you should consider before deciding:
Deliverability and speed
Look for providers that offer guarantees in delivering SMS messages promptly to customers. Delays in OTP delivery can impact user experience and security.
Security features
Evaluate the encryption methods used by the provider. Strong encryption ensures that OTPs remain confidential during transmission. Consider data protection mechanisms, such as secure storage of phone numbers and OTPs. Ensure the provider complies with relevant regulations (e.g., GDPR, CCPA) to safeguard user privacy.
Integration
Assess how easily the SMS OTP solution integrates with your existing systems. A seamless integration process minimizes disruptions and saves time. Check if the provider offers APIs or SDKs for smooth implementation.
Pricing
Compare costs among different providers, considering initial setup fees and ongoing charges. However, note that a lower price might mean lower-quality SMS routes, which could lead to OTPs not being delivered. Scalability is essential—ensure the pricing model aligns with your expected growth.
Industry recognition
Our OTP SMS service received widespread recognition within the industry, being awarded for its reliability, security, and global reach. As a trusted provider, these awards reinforce our devotion to providing top-tier security solutions that businesses can rely on.
SOC 2 Type 2 compliant
Mobile Ecosystem Forum certified
Prevent delays in account activation with instant OTP delivery
Ensure messages reach customers within seconds.
Common questions about SMS OTP
It enhances user experience by providing a simple and familiar method of authentication. Users don’t need to install additional apps or configure settings to receive OTPs. The quick and direct nature of SMS ensures that users can easily and securely complete transactions or access accounts without unnecessary delays.
Common use cases include securing online banking transactions, protecting e-commerce accounts during registration and high-value purchases, verifying identities on social media platforms, and authenticating users for digital services like streaming and messaging apps.
Global reach is crucial because it ensures that OTP messages can be reliably delivered to users anywhere in the world. For businesses with a global customer base, it’s important that users in different regions receive their OTPs promptly and securely, regardless of their location or local telecom infrastructure.
While SMS OTP is one of the most widely used 2FA methods, it does have certain drawbacks compared to other, more advanced authentication methods. However, these can be mitigated by working with a reliable SMS OTP provider. Let’s explore this in more detail:
Vulnerability to fraud:
Bad actors can intercept SMS messages, making SMS OTP susceptible to fraud (most often in the form of smishing, or SMS pumping).
Solution: Choose an SMS OTP provider with advanced anti-fraud solutions. At Infobip, we use an SMS firewall to protect customers against smishing attacks and a solution called Signals to block fraudulent OTP traffic automatically.
Connection quality and delays:
SMS delivery relies on mobile communication channels, which may have low signal quality. Delays in receiving SMS can render the OTP invalid if it expires before reaching the user.
Solution: Choose an SMS OTP provider with direct operator connections (quality routing).
Gateway downtime:
Organizations rely on external SMS gateways for OTP delivery. Malfunctions or downtime in these gateways can disrupt the authentication process.
Solution: Choose an SMS OTP provider with the least downtime.
Two-factor authentication (2FA) is a security feature that requires a user to prove their identity before being granted access to an account or performing an action. SMS OTP is a form of 2FA that uses SMS as a channel for sending and receiving OTP codes.
Besides on SMS, you can send OTPs on other channels, like:
While SMS OTPs are less secure than app-based tokens or biometric verification, they are more convenient and easier to implement. In terms of security, the main difference is that apps can generate codes locally on a device, while SMS OTP depends on the security of the connection between the mobile operator and the SMS provider.
Ultimately, the choice depends on your needs and the desired level of security. However, SMS that goes through quality routes and is protected by anti-fraud solutions will be enough for most use cases. You can also combine multiple methods of 2FA along with SMS.