SMS opt-in message examples: 30+ compliant templates for 2026

If you’re looking for ready-to-copy SMS opt-in message examples, this guide provides 30+ compliant templates built specifically for ecommerce businesses. We’ll cover the critical regulatory frameworks you need to navigate to keep your marketing efforts safe, including TCPA, A2P, 10DLC, and GDPR.

You’ll find a clear breakdown of consent types, the essential elements of a compliant message, and proven methods for collecting numbers. To make things easier, we’ll organize the templates by industry so you can quickly find the right fit for your brand.

Please note that this article is for informational purposes only and does not constitute legal advice.

What is SMS opt-in?

An SMS opt-in is the explicit consent a customer gives you to send them marketing text messages. When someone provides their phone number and agrees to receive your promotional campaigns, they’re officially opting in. 

And unlike best practices, which are optional, this is a strict legal requirement, so you must apply it. Sending texts without this permission can severely damage your brand reputation and result in penalties.

SMS opt-in meaning in the US (TCPA)

In the US, the Telephone Consumer Protection Act (TCPA) sets the rules for text message marketing. To comply, you must obtain explicit written consent before sending promotional texts. The customer must take a clear, proactive step to subscribe, like checking an empty box or texting a specific keyword.

Failing to follow these regulations carries major risks:

• Violating the TCPA can cost your business between $500 and $1,500 per message in fines
• US cell phone carriers require you to complete A2P 10DLC registration to verify your business and campaign use cases
• Carriers actively filter and block non-compliant messages, which means your texts simply won’t reach your audience

SMS opt-in requirements in the EU (GDPR and ePrivacy)

If you send messages to customers in the European Union, you must adhere to the General Data Protection Regulation (GDPR) and the ePrivacy Directive. These frameworks require that the consent of your subscribers are freely given and there’s absolutely no ambiguity in terms of the opt-in’s interpretation.

The consent action needs to be intentional and active, which means pre-ticked boxes are strictly off the table. Additionally, you must explain exactly how you’ll use their data and make it easy to unsubscribe at any time. This means the unsubscribe option should be clearly visible in expected places (footer, for example), not intentionally buried somewhere else.

Types of SMS consent you need to know

Here’s a breakdown of the different permission levels you’ll encounter as you build your list.

Single opt-in

A customer provides their phone number and agrees to receive your texts in one step. They submit a signup form or text a keyword, and they’re immediately added to your list. 

It’s a frictionless way to build your SMS marketing audience, though it has its downsides. People sometimes mess up their phone numbers, to which you’ll unsuccessfully be sending campaigns. As a result, a confirmation removes this potential mishap, which we’ll cover next.

Double opt-in

The first part is the same as a single opt-in, what’s different is what happens next. Once the subscriber signs up, they receive an automatic message asking to confirm the signup. Usually, it’s a message that asks you to reply with a “Y” or “YES”.

While this extra step creates some friction and may slow down your list building a bit, it also keeps your list clean, prevents typos, and protects your SMS deliverability.

Implied consent

When someone gives you their phone number by completing a purchase or asking a support question, they provide implied consent. This is where brands get it wrong and assume they have the required consent to add them to the general list.

However, that consent only pertains to that specific use case: to inform them about the purchase status or answer a question. It doesn’t allow you to blast promotional marketing messages to them.

Express written consent

It’s basically a single opt-in or double opt-in, where your customer explicitly agrees to receive promotional communications from your brand. You can get this consent on your web form, via SMS keyword, ticking unchecked boxes during checkout, or even verbally in a store or over the phone.

Promotional vs. transactional consent requirements

Make sure you handle these two categories differently. Implied consent is all you need for transactional texts like order confirmations or shipping updates. However, you legally must have express written consent before hitting send on promotional SMS campaigns like flash sales or product drops.

Essential elements of a compliant opt-in message

It’s important to understand the difference between the legal requirements for your signup and the actual text message you send. The following seven elements apply specifically to the automated confirmation text a customer receives right after they opt in.

Including these details is a non-negotiable step for your SMS compliance checklist:

1. Business name: State exactly who the message is from so the recipient recognizes you right away.
2. Subscription confirmation: Explicitly confirm that the customer successfully subscribed to your text list.
3. Message frequency: Let your subscribers know exactly how often they’ll hear from you, like “Up to 4 msgs/month.”
4. Data rates: Add the standard carrier heads-up so there are no surprises, usually written as “Msg & data rates may apply.”
5. Opt-out instruction: Give people a quick and easy way to leave your list. Just remind them they can reply with an opt-out text message keyword like “STOP.”
6. Terms and privacy link: Add a direct link to your website’s terms of service and privacy policy to keep everything transparent.
7. Customer support info: Tell the customer how to get assistance, usually by replying “HELP.”

Ensuring every confirmation text includes these details protects your business and sets clear expectations with your audience from the very first interaction.

How to collect SMS opt-ins

There are several effective ways to build your text list depending on where your audience interacts with your brand:

• Website popups and embedded forms: Capture visitors’ attention while they browse your site by offering a compelling incentive for signing up. Omnisend forms, for example, are built with TCPA and GDPR compliance in mind, featuring the required checkboxes and timestamped records by default.
• Checkout opt-in (ecommerce): Give shoppers the option to subscribe to texts while they are finalizing their purchase. This approach captures high-intent buyers exactly when they are most engaged with your store. With Omnisend’s Shopify integration, you can collect opt-ins at checkout with compliant consent text built in.
• Keywords (text-to-join): Promote a specific word, like “JOIN”, on your social media profiles or product packaging that customers can text to your number. It’s a proactive way to gather subscribers from various channels.
• In-person and paper forms: Collect phone numbers at your physical retail store or events using a physical sign-up sheet or a tablet. Always ensure your printed materials clearly display all necessary legal and compliance language.

30+ SMS opt-in message examples you can copy today

There’s a significant difference between email and SMS marketing messages in terms of tone and message length. SMSs are shorter, so you have to convince the customer to opt in in only a few lines.

Here are 30+ ready-to-use SMS opt-in message examples across various scenarios to help you. Each example is compliant, transparent, and conversion-friendly. So, you can just copy, customize, and send.

General ecommerce

Single opt-in confirmation

Double opt-in initial request

Double opt-in final confirmation

Marketing and promotional opt-in

Transactional message opt-in

Confirmation after verbal opt-in

Fashion and beauty

Single opt-in confirmation

Double opt-in initial request

Double opt-in final confirmation

Marketing and promotional opt-in

Opt-in with incentive

Food and beverage

Single opt-in confirmation

Double opt-in initial request

Double opt-in final confirmation

Marketing and promotional opt-in

Opt-in with incentive

Health and wellness

Single opt-in confirmation

Double opt-in initial request

Double opt-in final confirmation

Marketing and promotional opt-in

Transactional message opt-in

Fitness

Marketing and promotional opt-in

Transactional message opt-in

Confirmation after verbal opt-in

Opt-in with incentive

Events

Marketing and promotional opt-in

Transactional message opt-in

Confirmation after verbal opt-in

Opt-in with incentive

Real-world SMS opt-in examples

Here’s an example from SKIMS that shows how you can use your email newsletter to collect SMS subscribers and how the opt-in confirmation message looks like:

Also, here’s an example from Anthropologie that shows a double opt-in scenario from a website popup:

SMS opt-out messages: how to handle unsubscribes

Providing a clear way for customers to unsubscribe is a legally required part of an SMS under TCPA and CTIA guidelines. Customers must be able to opt out at any time by texting recognized keywords like STOP, UNSUBSCRIBE, END, CANCEL, or QUIT. Here’s an example: 

Manually removing contacts is risky and time-consuming. Fortunately, Omnisend automatically processes these keywords, guaranteeing instant list removal with no manual effort.

When a customer texts an opt-out keyword, you must send one final confirmation message. It’s a great best practice to include brief resubscription instructions in this text, just in case they opted out by mistake.

Opt-out confirmation example

A2P 10DLC registration and SMS opt-in compliance

Application-to-Person 10-Digit Long Code (A2P 10DLC) is a system that allows businesses to send commercial text messages via standard 10-digit phone numbers. It’s a strict requirement enforced by US mobile carriers to protect consumers from spam.

If you want your bulk text message campaigns to actually reach your audience, you must complete this registration process. To get approved, you need to submit specific details about your business and how you plan to use SMS. Carriers typically require:

• Brand details and business registration information
• Your specific campaign use case
• A detailed explanation of your opt-in process
• Sample messages you intend to send to subscribers

This registration process is heavily focused on proving consent. If your opt-in flow is vague or non-compliant, carriers will reject your campaign outright. Furthermore, keeping accurate, timestamped consent records is critical in case you ever face a compliance audit.

Fortunately, Omnisend supports full A2P 10DLC-compliant messaging. We collect and store timestamped consent records automatically, ensuring you always have the proof you need.

Best practices for compliant and effective SMS opt-in

Here are eight best practices to build a high-quality, legally sound text messaging list:

1. Be explicit about what subscribers are signing up for: Clearly tell people exactly what type of messages they will receive. This builds trust from the very first interaction.
2. Offer genuine value: One of the biggest benefits of SMS marketing is the direct connection to your customers. Reward them for that access with exclusive discounts or VIP early access.
3. Set frequency expectations: Tell your audience upfront how many texts they can expect per month. This prevents frustration and keeps your unsubscribe rate low.
4. Include opt-out instructions in every message: Make it incredibly straightforward for people to leave your list. Always include a clear “STOP” keyword in your campaigns.
5. Maintain detailed consent records: Keep timestamped proof of every opt-in. This protects your business in the event of a compliance audit.
6. Segment your audience: Use segmentation to send highly relevant, personalized texts. Avoid blasting your entire list with the exact same offer every time.
7. Respect quiet hours: It’s very important to know the best time to send an SMS. TCPA mandates that you only send promotional texts between 8 AM and 9 PM in the recipient’s local time zone.
8. Avoid generic link shorteners: Never use public link shorteners like bit.ly in your texts. Mobile carriers frequently flag and filter these links as spam.

Grow your SMS list compliantly with Omnisend

We’ve done the heavy lifting so you can focus on your business, not the tech. Omnisend is an intuitive platform designed for ecommerce that helps you grow your audience with total confidence.

• Built-in compliance: We automatically process STOP and HELP replies, safely store your consent records, and support full A2P 10DLC registration. You get to focus on making sales while we handle the regulatory details behind the scenes.
• Integrated channels: Omnisend combines SMS, email, and push notifications into one powerful platform. This way, your marketing becomes omnichannel, ensuring consistency at every touchpoint.
• Pre-built automations: You can use pre-built workflows for cases like welcome series, cart recovery, or birthday messages with SMS built right in. Also, the platform’s ready-made templates and drag-and-drop editor make setup fast, even for first-timers.

Frequently asked questions about SMS opt-in messages