One-Time Password (OTP) Verification

Elevate your business protection with Esendex’s SMS OTP Verification Service.

Esendex OTP Verification service is trusted by some of the largest global brands

What is OTP Verification via SMS?

OTP verification secures online accounts or transactions by requiring users to enter a unique code sent to their mobile phone via SMS. This authentication method is useful in many industries, from online banking to e-commerce, where secure authentication is essential.

When an OTP is sent through SMS and verified, it provides an additional layer of security by confirming that the person attempting to access the account or complete the transaction is the legitimate account holder.

Advanced Features of Esendex OTP Verification

Customized Sender IDs

Our customized sender ID feature allows you to personalize SMS messages with your company name. Instead of getting a generic message and code, your customers will be reminded of your branding each time they interact with your app or website. This will create a more professional and trustworthy image for your business when your customers receive your communication.

Delivery Receipts

With our delivery receipt feature, you will be notified each time your SMS message has successfully reached your customer’s inbox. This will clear up any speculation by clearly confirming your message’s destination.

Time-based One-Time Passwords (TOTP)

Time-based one-time passwords present an additional layer of security by expiring after a set period. When your customers attempt to sign in or complete the transaction, they will only have a short time to use the one-time password sent to their phone.

If they don’t make it in time, they must request a new OTP to complete their action. This will prevent cyber criminals from accessing the code later and authenticating themselves as customer fraudulently.

Benefits of SMS OTP Verification

SMS OTP Verification has several benefits that can help your business grow:


SMS OTP verification is a secure method of protecting data, accounts, and transactions. Since they can only be used once and are time-bound, it’s more difficult for accounts to be hacked or fraudulent transactions to be completed.


SMS OTP verification is the most reliable method of authentication. It’s one of the only ways to ensure the user can access a system or account, reducing the risk of fraud and unauthorized access to critical information.

Easy Implementation

This system is easy to implement even without technical skills or a specialized department. It typically only requires finding a suitable provider and following simple steps to integrate their API with your website or app. Once you’ve activated the service, your customers will be ready to receive authentication codes.


SMS OTP verification is a user-friendly method of securing digital transactions. Users only need their mobile phone and a valid SIM card to receive the OTP, making it a convenient way to keep their online accounts secure.

Reduces Password Fatigue

SMS OTP verification helps to reduce password fatigue by eliminating the need for users to remember complex passwords or security questions. Since OTPs are sent directly to the user’s phone, and they can simply copy and paste a code for each account.

Improves Customer Experience

SMS OTP verification makes it easier for customers to access their accounts and complete secure transactions, improving the overall customer experience. Your customers are much more likely to be satisfied with this system in place and trust your brand for account security.

Getting started with OTP Verification via SMS with Esendex

At Esendex, getting started with our OTP verification service is as easy as:

  1. Signing up for an Esendex account. If you don’t have one already, reach out to our team of experts here.
  2. Determine which SMS package will best suit your needs.
  3. Integrate our API into your app or website.
  4. Enable OTP verification through SMS in your Esendex account settings.
  5. Start using our OTP verification service through SMS to secure your online accounts and transactions.

Let’s start sending, together.