Authentication templates
Ready-to-use otp authentication templates for WhatsApp — copy, personalize and automate with Defuser AI.
Delivers one-time passwords and login codes over WhatsApp for sign-ups, logins, and transaction verification. Gives users a faster, higher-engagement alternative to SMS codes on a channel they already trust.
Example message:
Your Defuser login code is 482913. It expires in 5 minutes. Don't share this code with anyone.
Your app or store requests an OTP when a user signs up, logs in, or verifies a transaction.
Defuser delivers the code using an Authentication-category template to the user's verified number.
The user enters the code and your system confirms it, completing the secure action.
Templates are step one. With Talksy and the no-code flow builder, Defuser fills variables from your store or CRM and sends at the right moment. Marketing templates require Meta approval — we submit them for you.
Many businesses see better delivery and read rates on WhatsApp because messages arrive in an app users actively check. Authentication templates are purpose-built by Meta for sending codes.
OTPs use WhatsApp's Authentication conversation category. Defuser's transparent calculator shows the per-conversation fee for each of 30+ countries so you can budget accurately.
Authentication templates that start a conversation must be approved by Meta. Defuser submits them for you.
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