SMS has a trust problem it inherited from robocalls and phishing texts, and every promotional message you send either builds on that trust or burns it. The good news: the fix isn’t complicated. Most SMS copy that “feels like spam” makes the same handful of mistakes, and all of them are easy to avoid once you know what to look for.
Why Some Texts Feel Like Spam and Others Don’t
Spammy SMS copy usually shares three traits: it’s vague, it’s pushy, and it doesn’t sound like a person wrote it. Trustworthy SMS copy does the opposite — it’s specific, it’s low-pressure, and it reads like a text from a real brand that knows who you are.
The difference often comes down to a handful of small choices in wording, not a complete rewrite of your strategy.
Mistake #1: Opening With Hype Instead of Context
Spammy:
🔥🔥 HUGE SALE!!! DON’T MISS OUT!!! Shop now before it’s gone!!! 🔥🔥
Better:
Hey Sarah — your favorite candle scent is 20% off through Sunday. Here’s your link: [link]
The second version identifies the person, references something specific to them, and states the offer plainly. No emoji stacking, no all-caps urgency — the offer itself carries the urgency.
Mistake #2: No Clear Reason You’re Texting Them
Spammy:
Big news! Check out what’s new at [Brand]!
Better:
The jacket you looked at last week just got restocked in your size (M). Grab it before it sells out again: [link]
Vague “big news” copy reads like a mass blast to a stranger. Referencing something the customer actually did — browsed a product, abandoned a cart, joined a waitlist — signals the message is relevant to them specifically, not just a blast to everyone on the list.
Mistake #3: Burying or Hiding the Opt-Out
Spammy:
Amazing deals waiting for you! Shop the collection now: [link] (no opt-out mentioned anywhere)
Better:
New arrivals just dropped — 15% off today only: [link] Reply STOP to unsubscribe
Including a visible opt-out isn’t just a compliance requirement — it also signals confidence. Brands that hide the unsubscribe option read as brands that don’t want you to leave, which itself feels spammier than just stating it plainly.
Mistake #4: Sending Too Often With No Variation
Even well-written individual texts start to feel like spam if they arrive daily with the same structure and tone. A subscriber who gets five nearly identical “20% off today only!” messages in a week stops reading them as urgent and starts reading them as noise.
A healthier cadence:
- 1–2 promotional campaigns per week, maximum
- Automated flows (abandoned cart, back-in-stock) don’t count against this — they’re triggered by behavior, not a blast schedule
- Vary the format: a plain-text update one week, an MMS with an image the next, a short poll or question another week
Mistake #5: Writing Like an Ad Instead of a Text
Spammy:
🎉 INTRODUCING our Fall Collection! Discover premium quality materials crafted for the modern lifestyle. Shop today and elevate your wardrobe! 🎉
Better:
Fall drop is live. Cozy knits, back in your size. First 50 orders get free shipping: [link]
The rewritten version is shorter, uses plain language, and reads like something an actual person would type — because that’s what SMS is supposed to feel like. Marketing adjectives like “premium,” “elevate,” and “modern lifestyle” belong in an email banner, not a text message.
A Quick Before/After Template
Use this structure for almost any promotional text:
[Personal or contextual opener] + [specific offer] + [one clear action] + [opt-out, if it’s a first-time send in a thread]
Example:
Hey Jordan — the boots you added to your cart are almost gone (3 left in size 8). Here’s 10% off to grab them: [link]. Reply STOP to opt out.
That’s four short elements, no hype language, and it reads like a message from a person who knows what the customer was actually doing on the site.
What Good SMS Copy Has in Common
Looking across the examples above, a few patterns repeat:
- Specificity beats hype — a real product, a real number, a real deadline outperforms exclamation points every time
- Reference behavior, not just inventory — “you looked at this” converts better than “we have this”
- Shorter is almost always better — if it doesn’t fit in two sentences, it’s probably an email, not a text
- The opt-out is a feature, not a liability — visible, easy opt-outs build trust rather than costing you subscribers
Getting Started
You don’t need a copywriter to apply this — most of it comes down to slowing down before you hit send and asking: would I text this to a friend, or does it read like an ad? If it reads like an ad, it’ll read like spam to your subscribers too.
Senderium’s campaign templates are built around this same structure — short, specific, and personalized by default — so you’re starting from a message that already sounds like a person, not a blast.
