The debate between SMS and email marketing comes down to one question: which channel actually gets your message read and acted on? The answer depends on your audience, your message type, and what you define as a "response."
The Core Numbers
SMS open rates average 90–98%, with most messages read within 3 minutes of delivery. Email open rates average 20–25% for commercial senders — and that's for well-maintained lists. The gap in raw attention is enormous.
However, click-through rates tell a more nuanced story. Email CTRs average 2–5% while SMS CTRs typically run 10–20% for promotional content. But email allows rich content, images, multiple CTAs, and longer copy that can educate and persuade before the click.
When SMS Wins
- Time-sensitive offers: Flash sales, limited-time promotions, event reminders
- Appointment confirmations: Reminders that need to be seen immediately
- Short conversion paths: "Reply YES to claim your discount"
- Audiences who don't check email often
- Re-engagement of cold leads
When Email Wins
- Complex offers: Multiple products, detailed explanations, comparisons
- B2B outreach: Decision makers expect and prefer email
- Nurture sequences: Multi-touch educational campaigns
- Brand storytelling: Long-form content, newsletters, case studies
- Budget consciousness: Email is cheaper per message at high volumes
The strongest campaigns use both. An email blast sets up the offer in detail, and an SMS blast 24 hours later drives urgency to act before the deadline.
Response Rate by Industry
In retail and restaurant promotions, SMS consistently outperforms email for same-day response rates. In B2B software and services, email outperforms because it fits the professional context. For healthcare appointment reminders, SMS is dominant. For newsletter-style content, email wins by a wide margin.
The Combined Approach
SmartBlaster lets you run SMS and email blasts from the same platform to the same contact list. This omnichannel approach lets you test which channel your specific audience responds to, and use both strategically rather than choosing one over the other.
The answer to "which gets more responses" is: SMS gets more opens, email gets more depth. The winners use both.
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