Lock for security and verification purposes

Verify users on the app they already know and love

You shouldn’t have to choose between security and conversions or delivering a positive UX to your customers. In some countries, messaging apps like WhatsApp are extremely popular for communication.  

With WhatsApp Authentication, you can offer your customers the choice of receiving an OTP in the app they’re already familiar with. With end-to-end encryption, secure delivery, and global compliance, we help you keep your customers happy and their accounts secure. 

Step up your security with these WhatsApp OTP benefits

Using WhatsApp as a verification channel can bring great benefits to your business and your customers.
  • Verify over a secure channel

    Build trust with customers by sending OTP messages from a branded and authentic business account accompanied by a green badge with a verified check. WhatsApp also ensures that only the end user can view the delivered message (end-to-end encryption), which helps reduce potential spam and fraud attacks.

  • Get up and running in no time

    Integrate easily, use ready-to-go authentication message templates, and go live instantly. With Sinch, we also make it much easier for you to scale and use fallback verification methods like SMS or Flash Call if necessary.

  • Measure your success

    Get Delivered and Read receipts for all messages plus additional analytics.

  • Better UX

    Make the authentication process seamless and more convenient for your customers on a reliable channel that they use regularly.

WhatsApp OTP handset
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Ensure a best-in-class authentication experience

The digital landscape has increased the number of touchpoints a customer has during their journey​. With the increase of fraud and security threats, authentication is key to keep your customers’ information secure. You can prevent attacks by enforcing OTP verification at different stages of the customer journey.   

The WhatsApp Business API encrypts all messages, so that only the customer can view the message. This makes WhatsApp a more reliable channel to send OTPs on and decreases the chance of bad actors getting access to both a password and an OTP. In some markets, WhatsApp OTP can help you reduce your messaging costs. Reach out to us for more information and pricing and double up on security today!

Account signup and onboarding

Confirm users have their mobile devices to authenticate them during registration.

Account recovery

Forgot your password? No problem! Get an OTP to get back into your account.

Transaction and transfer approvals

Verify transactions or monetary transfers quickly and easily to add security while minimizing drop off.

and access to services

Use mobile devices for two-factor (2FA) and simplified one-factor authentication (1FA).

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Start sending OTP over WhatsApp today

Sinch makes it easy for you to get up and running to send OTP with WhatsApp. How to get started? 

  • Set up a Meta Business Manager account 
  • Sign up for a Sinch Dashboard account and set up Conversation API 
  • Submit your Authentication message templates to WhatsApp for approval. 

And off you go! As a longtime Meta partner and Business Service Provider, Sinch can help you every step of the way. Reach out to us and we’ll be happy to help and onboard you!  

If you want to pair WhatsApp with other scalable multi-factor authentication solutions, check out Verification API, a single API for verification, built with conversion in mind! 

Interested in using WhatsApp as a messaging channel to engage with your customers beyond just authentication? No problem! You can submit other message templates during Step 3 above or later for approval if you want to send promotions, transaction notifications, and appointment reminders, or engage in customer support with your end users! Learn more about message template categories in our WhatsApp business messaging guide.

The Sinch advantage

  • We're a 2FA leader

    Sinch is a world-class leader in 2FA, offering multiple verification methods depending on your needs, including SMS, Phone Call, Flash Call, Data Verification – and now WhatsApp!

  • We’re a WhatsApp Business Solution Provider

    We’re a WhatsApp Business Solution Provider, which means we partner and work closely with Meta to ensure we’re setting you up for success when it comes to using WhatsApp Business API.  

  • We have 600+ direct carrier connections

    Get access to an extensive network of 600+ direct carrier connections along with deep carrier integrations and investments in number intelligence, ensuring superior coverage and high quality.  

  • We value security and compliance

    We take security seriously and have put in place sophisticated measures to ensure end-to-end security and that data is protected – we are ISO 27001 certified and GDPR compliant. 

  • We are trusted with customer communications

    3,000+ enterprise customers globally, including 8 of 10 of the largest U.S. tech companies, trust us with their customer communications.

Person looking at phone by computer on WhatsApp
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hand holding a mobile phone with channel icons

Get started with WhatsApp OTP

customer receiving a rich message