How is WhatsApp marketing different from SMS, and do I still need SMS?
The short answer
WhatsApp wins on almost every metric that matters in India, near-95% open rates versus 20-25% for email and far higher engagement than SMS, plus rich media (images, catalogs, buttons) that plain SMS can't do. Keep SMS as a fallback channel only, for the sliver of customers without WhatsApp or for OTP/critical transactional alerts where deliverability has to be guaranteed independent of any app. For a D2C brand in India in 2026, WhatsApp should be your primary messaging channel and SMS the backup, not the other way around.
A quick summary to orient you. The real value is below: the resources worth your time, from people who've actually done it, not us.
Here are the resources
Hand-picked from around the web, each with a note on why it earns your time. India-specific ones carry a badge.
4 resources2 India-specific3 link-checked
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📄 Article
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Why we picked it
The best global reference for SMS specifically, useful for the transactional/OTP fallback layer that still matters even in a WhatsApp-first Indian messaging strategy.
Why we picked it
Makes the strongest ROI case for prioritising WhatsApp with concrete India performance figures, useful ammunition if you need to justify shifting budget away from SMS or email internally.
Why we picked it
A second independent perspective on the India WhatsApp tool landscape from a competing vendor, useful for cross-checking claims before picking a platform.
Why we picked it
The official source on how the WhatsApp Business Platform actually works underneath every BSP tool, worth understanding directly so you know what your BSP is and isn't doing on your behalf, especially around consent and opt-in rules.
