1. The Numbers: 98% Open Rate vs 12% for SMS
SMS inbox overload has caused consumer engagement to plummet. Over 80% of promotional SMS in India are filtered directly into spam folders or silenced by modern smartphone operating systems.
WhatsApp, by contrast, remains the primary daily communications app for over 500 million Indian users. 80% of WhatsApp messages are opened within the first 3 minutes of receipt, and total read rates routinely exceed 95%.
2. Rich Media, Video Catalogs & One-Tap Actions
While traditional SMS restricts you to 160 plain characters and awkward bit.ly links that look suspicious to consumers, WhatsApp broadcasts support rich video demos, high-resolution product carousels, PDF invoice downloads, and native CTA buttons.
Customers can tap "Order with 1-Click" or "Pay with UPI" directly inside the thread without ever leaving WhatsApp.
3. Cost per Conversion Breakdown
Although a single SMS credit appears cheaper on paper (~₹0.15 vs ~₹0.70 for a Meta Marketing conversation in India), the cost per actual conversion tells the real story.
With SMS conversion rates averaging 0.4% and WhatsApp conversion rates averaging 3.8% to 6.2%, the effective customer acquisition cost on WhatsApp is 60% lower than traditional SMS.