Your SMS message competes with personal texts from friends and family. The bar is high — but the rewards for clearing it are enormous. A well-written text gets read within 3 minutes, clicked by 21–35% of recipients, and influences purchase decisions that the customer makes in the next moment. Here's how to write them well.
The 160-Character Rule
A standard SMS is 160 characters. Go longer and it splits into two messages (306 chars maximum), which costs more and can display oddly on some devices. The constraint is actually a gift — it forces clarity and directness that email copywriting never demands.
Every single word must work. Words that say nothing (just, really, very, so) get cut. Filler phrases ("don't miss out on this opportunity") become action words ("Last chance"). Passive voice ("your order has been prepared") becomes active ("Your order's ready").
Always include: Business name (subscribers may not recognize your number), offer or value, clear CTA, opt-out instruction. If you're sending to new subscribers, the opt-out instruction is legally required.
The AIDA Formula for SMS
Attention → Interest → Desire → Action. In 160 characters.
Attention
Interest
Desire
Action
Example breakdown:
- Attention: 🔥 LAST CHANCE — an emoji + urgency phrase stops the scroll
- Interest: 3-course dinner — a specific, tangible offer
- Desire: $29 tonight only — price anchor + urgency
- Action: Book now before we sell out — directional + scarcity
Personalization That Converts
Using someone's first name increases open rates by 14% and click rates by 10% on average. With IgniteSMS, insert {{first_name}}, {{business_name}}, {{last_visit_date}} and other variables directly into your message template.
Without personalization:
With personalization:
The second version feels like a personal message, not a blast. That perception difference drives conversion.
10+ Real SMS Message Examples
Restaurants
Retail
Salons & Spas
E-Commerce
Services / Local Business
Power Words for SMS CTAs
The call to action is where clicks are made or lost. These words consistently outperform generic phrases:
- Urgency triggers: "Tonight only," "Ends in 2 hours," "Last chance," "Selling fast," "Before midnight"
- Scarcity triggers: "Only 5 left," "First 20 customers," "Limited availability," "While supplies last"
- Value signals: "Free," "Save $X," "Exclusive," "VIP only," "Members-only"
- Action verbs: "Shop," "Book," "Reserve," "Claim," "Grab," "Unlock," "Get started"
- Social proof: "Bestseller," "Back by popular demand," "Our #1 dish is back"
Emoji Usage: When They Help, When They Hurt
Emojis increase engagement by 10–15% when used appropriately. Rules:
- 1–2 emojis maximum per message
- Use at the beginning to act as a visual hook, or at the end to close with warmth
- Match the emoji to your brand voice — a luxury spa shouldn't use 🔥 while a taco joint probably should
- Avoid emojis in formal or transactional messages (reminders, billing notifications)
- Don't use emojis as substitutes for words — "❤️ your loyalty" is weaker than "we appreciate your loyalty 💙"
5 Things That Kill Conversions
Never do these in an SMS message:
- ALL CAPS for the whole message — aggressive, spammy, and harder to read. Reserve caps for a single word for emphasis only.
- No clear opt-out — required by law. Always include "Reply STOP to opt out" — abbreviated as much as space allows.
- Vague CTAs — "Click here" or "Check it out" give no reason to act. Tell them exactly what they get when they click.
- Not identifying your business — Recipients don't always save business numbers. Start with your business name or include it naturally in the message.
- Sending without relevant context — "You have a special offer!" with no details is a deleted text. Be specific every time.
A/B Testing Your Copy
Even small copy changes can swing conversion rates by 20–40%. A structured testing program pays for itself quickly. Every 4 weeks, test one variable:
- Week 1: Different CTAs ("Shop now" vs "Claim your deal")
- Week 2: Emoji vs no emoji
- Week 3: Urgency framing (time-limited vs scarcity-limited)
- Week 4: Personalized name vs no name
Send each variation to a 20% sample of your list, pick the winner, then send the winner to the remaining 60%.