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One Time Password API

One Time Password as a Service

Enhance the security of your platform by integrating our One Time Password API. One connection to generate, send and monitor all your OTPs.

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Full Flexibility in OTP Delivery

Fully configure your own OTP setup with our Business Messaging API to match your needs. Full freedom in the selection of channels & messages.

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Trusted by Brands globally

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One API to Rule Them All

One connection for all OTP channels. Pick and choose the best fits for your use cases and destinations and benefit from the best qualities of each channel.

  1. Ensure reach and deliverability with SMS and Voice

  2. Increase security with WhatsApp, Viber, or RCS

  3. Reduce costs with email OTPs

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Full Service OTP Solution via one API

We generate and validate OTP codes and take care of the setup and maintenance of the channels. Activate WhatsApp, Push, Voice, SMS, RCS, Viber or email and choose your routing priority.

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Why Choose CM.com as Your OTP Provider

Fast delivery of time-critical messages are guaranteed

Our platform is connected to 2000 operators worldwide

Rely on our ISO 27001 certified redundant platform

Benefit from our round-the-clock and in-house support

Get clear control and insights on your costs and traffic

Frequently Asked Questions About One Time Passwords

What Is a One Time Password?

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A One Time Password or OTP is a security code designed to be used for a single login attempt, to minimize the risk of fraudulent login attempts and maintain high security. It’s a string of characters or numbers automatically generated and sent to the user’s phone via SMS, Voice, or Push message.

The OTP has become the standard method worldwide of enabling a login when special circumstances apply, such as validating a new account or confirming a transaction is legitimate.

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How to Send One-Time Passwords?

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Providers like CM.com offer OTPs as a service, with a secure platform for receiving or initiating OTP requests, sending the OTP as a text or other channel, and verifying the OTP was entered correctly, so the transaction can go ahead.

The infrastructure for making use of one-time passwords integrates with your website or application using an API. This is how a site “knows” whether an entered OTP is correct or not, with safeguards like checking it’s within the time window.

What Are One Time Password Channels?

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There are several ways to send an OTP. Some give the option of receiving OTPs by email, although this tends to be less secure. Other providers even enable OTPs as voicemails, stating the PIN aloud when the customer checks the mailbox.

But by far the most common way to send OTPs is by Push or text messaging, typically an SMS or even WhatsApp message to the customer’s mobile phone.

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How Does a One Time Password Work?

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An OTP is generated automatically as a semi-random number or string of characters. There is no way to predict what the OTP will be ahead of time. OTPs are valid for a single login session or transaction, enhancing security by reducing the risk of unauthorized access even if the password is intercepted. Once used, the OTP expires, ensuring it cannot be reused for future logins or transactions.

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