Open rate and engagement comparison
Data speaks clearly: WhatsApp has a 95-98% open rate, SMS 90-95%, and email 20-25%. This huge difference translates directly into communication effectiveness.
The click-through rate (CTR) on WhatsApp averages 15-25%, versus 2-3% for email marketing.
Costs and accessibility
Email is the cheapest channel in absolute terms. Considering different open rates, the cost per impression and per click for WhatsApp often results lower than email marketing.
When to use each channel
Use WhatsApp for: urgent or time-sensitive notifications, messages requiring quick response, high-value personalized communications, real-time customer support. Use email for: long content, communications customers need to keep. Use SMS for: OTP, security alerts, customers without WhatsApp.
Multi-channel strategy
The optimal strategy is not choosing one channel but coordinating them intelligently.
A coordinated multi-channel strategy maximizes coverage and reduces communication fatigue.
