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Telephony + trust 7 min read

Crafting Compelling SMS Copy for Marketing Campaigns

Learn how agencies can write short, powerful SMS messages that get results for marketing campaigns, even with strict character limits.

Agencies often find it hard to write short, catchy, and useful SMS messages for marketing. This guide will show you how to create SMS copy that grabs attention and makes people act, all while keeping your client's brand voice strong. We'll give you practical tips and examples to help you master this skill.

Why Short Messages Matter

SMS messages are different from emails or social media posts. They are short and direct. Most phones show only a few lines, and there's a character limit, usually 160 characters for a single SMS. This means every word counts. You need to get your point across fast.

People usually check text messages quickly. If your message is too long or confusing, they'll ignore it. A good SMS campaign feels personal and urgent. It should make the reader want to do something right away, like click a link or reply.

Think about how you use your own phone. You probably skim texts. Your clients' customers do the same. So, your SMS copy needs to be clear, concise, and compelling from the very first word.

Getting Started: Planning Your SMS Campaign

Before you write a single word, you need a plan. What do you want your SMS to achieve? Is it to announce a sale, share an update, or get people to sign up for something? Knowing your goal helps you write better copy.

Next, think about who you're talking to. Your client's audience has specific needs and interests. The language you use should match how they talk and what they care about. A message for teenagers will sound different from a message for business owners.

Consider the timing of your messages. Sending texts at odd hours can annoy people. Make sure your messages go out when customers are most likely to read and act on them. Also, remember that people need to agree to receive texts from you. This is called "opt-in," and it's very important for legal reasons and to build trust. Always tell your clients to check current rules with their provider or legal counsel. For example, the FCC has rules about calls and texts, and the FTC has guidelines for businesses.

Writing Effective SMS Copy: The Essentials

Now, let's get to writing. Here are key things to focus on:

Be Clear and Concise

Every word needs to pull its weight. Cut out extra words. Get straight to the point.

  • Bad Example: "Hello valued customer! We hope you are having a wonderful day. We just wanted to let you know that our amazing new spring collection has arrived and is now available for purchase in our stores and online. Don't miss out on these fantastic deals!" (Too long, too much fluff)
  • Good Example: "Spring collection is here! Shop new arrivals in-store & online now. Don't miss out!" (Direct, clear call to action)

Create Urgency and Value

People respond to things that feel important or offer a clear benefit.

  • Urgency: Use words like "Limited time," "Act now," "Ends soon."
  • Value: Clearly state what the customer gets. Is it a discount, a freebie, exclusive access?
  • Example: "Flash Sale! Get 20% off all items for 24 hours only. Shop now: [Link]"

Include a Clear Call to Action (CTA)

What do you want the recipient to do? Tell them clearly.

  • Examples: "Shop now," "Reply YES to confirm," "Click here," "Learn more."
  • Always include a link if you want them to visit a website. Make sure the link is short. You can use a link shortener if needed.
  • Example: "Your order is ready for pickup! View details: [Short Link]"

Maintain Brand Voice

Even with limited space, your client's brand personality should shine through. Is their brand fun, serious, helpful, or exclusive?

  • Example (Playful Brand): "Hey, party animal! 🎉 Your VIP invite to our summer bash is here. RSVP by Friday! [Link]"
  • Example (Professional Brand): "Exclusive webinar invitation: 'Future of Marketing.' Register by [Date]: [Link]"

Personalize When Possible

Using the recipient's name can make a big difference. Many CRM systems allow this.

  • Example: "Hi [Name], your next appointment with [Business Name] is on [Date] at [Time]."

A/B Test Your Messages

Try sending two different versions of your SMS copy to small groups of your audience. See which one performs better. This helps you learn what works best for your client's specific audience. You can test different CTAs, offers, or even emojis.

Compliance and Best Practices

It's crucial to follow rules for SMS marketing.

  • Opt-In: Always get permission before sending texts.
  • Opt-Out: Make it easy for people to stop receiving messages. Include "Text STOP to unsubscribe" in your messages.
  • Identify Yourself: Clearly state who the message is from.
  • Timing: Avoid sending messages too early in the morning or too late at night.
  • A2P 10DLC: If you're sending messages from an application to a person (A2P) over a 10-digit long code (10DLC), there are specific registration requirements in the US to ensure messages are delivered and not blocked as spam. Your provider, like Twilio, will have details on A2P 10DLC registration. Always advise your clients to check current requirements with their provider or legal counsel.

Following these rules helps build trust and keeps your client's campaigns effective.

Practical Examples for Agencies

Here are some scenarios and how you might craft SMS copy:

Scenario 1: Promoting a New Product/Service

  • Goal: Drive traffic to a new product page.
  • Copy: "🚨 New Arrival! Check out our revolutionary [Product Name]. Limited stock! Shop now: [Link]"
  • Why it works: Uses urgency ("New Arrival," "Limited stock"), clear CTA ("Shop now"), and a short link.

Scenario 2: Appointment Reminders

  • Goal: Reduce no-shows for client appointments.
  • Copy: "Hi [Client Name], just a friendly reminder of your appointment with [Business Name] on [Date] at [Time]. Reply C to confirm or R to reschedule."
  • Why it works: Personal, clear details, easy way to confirm or change. a connected agency platform allows you to connect contact records, tasks, and appointments, making these automated reminders simple to set up.

Scenario 3: Limited-Time Offer

  • Goal: Encourage immediate purchases with a discount.
  • Copy: "🔥 Flash Sale Alert! Get 30% off everything for the next 48 hours. Don't miss out! Shop here: [Link]"
  • Why it works: High urgency ("Flash Sale," "48 hours"), clear value ("30% off"), strong CTA.

Scenario 4: Re-engaging Inactive Customers

  • Goal: Get customers who haven't bought in a while to return.
  • Copy: "We miss you, [Name]! Here's 15% off your next order to welcome you back. Use code WELCOME15 at checkout: [Link]"
  • Why it works: Personal, offers an incentive, easy to use. For more strategies on re-engagement, check out our article on strategies for re-engaging inactive email subscribers.

Scenario 5: Customer Support/Onboarding

  • Goal: Provide quick support or guide new customers.
  • Copy: "Welcome to [Business Name]! Need help getting started? Our support team is here for you. Visit: [Support Link]"
  • Why it works: Welcoming, offers help, directs to resources. For more on using SMS for support, see our guide on how to use SMS for client onboarding and support.

Key Takeaways for Agencies

  • Brevity is King: Always aim for the shortest possible message that still makes sense.
  • Action-Oriented: Every SMS should have a clear purpose and tell the recipient what to do next.
  • Brand Consistency: Even in short bursts, maintain your client's unique voice.
  • Compliance First: Always follow opt-in/opt-out rules and other regulations to build trust and avoid issues.
  • Test and Learn: Don't be afraid to experiment with different messages to see what resonates best with your audience.

By focusing on these points, agencies can create powerful SMS marketing campaigns that deliver real results for their clients. a connected agency platform's built-in SMS capabilities allow agencies to manage broadcasts and automations efficiently, helping you put these strategies into practice.

Next Steps

Review your current SMS campaigns or draft new ones using these guidelines. Focus on making them shorter, clearer, and more action-oriented.

Common questions

Answers at a glance

What is the typical character limit for an SMS message?

A single SMS message usually has a limit of 160 characters. If your message goes over this, it might be sent as multiple messages or charged differently, so it's best to stay within the limit.

What is a Call to Action (CTA) in SMS marketing?

A Call to Action (CTA) is a clear instruction telling the recipient what you want them to do next. Examples include "Shop now," "Click here," "Reply YES," or "Learn more."

Why is it important to get customer permission (opt-in) for SMS marketing?

Getting permission (opt-in) is crucial for legal compliance and to build trust with your audience. Sending unsolicited messages can lead to complaints, fines, and a damaged brand reputation. Always advise clients to check current rules with their provider or legal counsel.

How can agencies maintain a brand voice in short SMS messages?

Even with limited space, agencies can maintain brand voice by using specific vocabulary, emojis, and a tone that matches the client's brand personality (e.g., playful, professional, urgent). Consistency in messaging helps reinforce the brand.

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