SaaS & Software
Delivers one-time passwords and login codes over WhatsApp for sign-ups, logins, and transaction verification. Built for software products & subscription apps.
SaaS companies use WhatsApp to qualify trial leads, onboard users, send renewal reminders, and reduce churn with timely support.
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.
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.
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.
WhatsApp reaches users where email gets ignored, which is exactly where onboarding nudges, renewal reminders, and churn-saving messages matter most. It complements your in-app flows by re-engaging users who've drifted away from the product, across the many markets where WhatsApp is the default messenger.
Start free in minutes — no code, no credit card. Connect WhatsApp, Instagram, Messenger and TikTok in one platform.
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