RCS: what they are, how they work and how they impact your mobile strategy

Fecha: 4 de August de 2026 Noelia Leiro

Traditional SMS, with its simplicity, has been a mainstay of mobile communication, but its limited interactivity restricts its potential for conversion and engagement. Mobile marketing teams and app product managers are constantly looking for channels that offer more visual richness and direct functionality to capture the user’s attention.

This is where Rich Communication Services (RCS) emerges as the next standard, promising to transform enterprise messaging by combining the ubiquity of SMS with the interactivity of chat apps. This article is for those looking for richer alternatives to SMS but more direct than messaging apps, positioning Actualizatec as your strategic ally in this evolution.

What are RCS (Rich Communication Services) really?

Rich Communication Services (RCS) is an evolution of SMS that allows messages with rich media content, advanced interactivity and chat functionality to be sent directly to the user’s native messaging application. Unlike SMS, which operates over the traditional cellular network, RCS works over mobile data or Wi-Fi.

• RCS allows you to send high resolution images, videos, audios, GIFs and attachments.
• It includes chat functionalities such as read confirmations, typing indicators and suggested answers.
• Facilitates the integration of interactive action buttons and product carousels.

The history of RCS dates back to the early 2000s, but it wasn’t until Google pushed it through its Business Messages platform and Android integration that it began to gain significant traction. By 2026, RCS adoption has grown exponentially, with most modern Android devices compatible and, notably, Apple announcing support for RCS in iOS 18 and later versions, making it a near-universal standard.

How does RCS work: the technology behind the channel?

RCS messages are sent from an enterprise platform (often a CPaaS provider) through Google Business Messages servers and mobile operators to the user’s messaging application (primarily Google Messages on Android). This process ensures reliable delivery and activation of rich features.

• The sender needs a verified Google Business Messages account and a CPaaS provider that integrates the RCS API.
• The receiver requires an RCS-compatible device and a messaging application that supports it, such as Google Messages.
• Brand verification is critical: Google requires businesses to pass a verification process to earn a trusted brand badge, which increases delivery rates and user confidence.

A key feature is the automatic fallback to SMS: if the user’s device does not support RCS or does not have an internet connection, the message is automatically sent as a traditional SMS, ensuring delivery of the essential content according to Route Mobile. This security mechanism is fundamental to the reliability of RCS as a business communication channel.

RCS vs SMS vs WhatsApp Business: real comparison for mobile strategy

Choosing the right messaging channel is crucial to any mobile marketing strategy, and RCS, SMS and WhatsApp Business API offer different capabilities. While SMS is universal but limited, WhatsApp Business API is interactive but requires a third-party application, and RCS strikes a balance between the two.

The global RCS market was valued at $12.86 billion in 2024 and is projected to reach $36.41 billion by 2033, according to Strategic Revenue Insights. Meanwhile, the enterprise A2P SMS market will reach $58.44 billion by 2026.

Below is a comparison table highlighting the key differences between these channels, including push notifications as an additional element of the mobile strategy:

RCS use cases that really work in mobile apps

RCS is unlocking new ways to interact with mobile app users, overcoming the limitations of SMS and complementing the capabilities of OTT messaging apps. Brands that have adopted RCS have seen ROI 6.2 times higher than other channels.

• Rich Onboarding: Guide new users through interactive carousels that showcase key app features, with direct action buttons to complete the profile or explore sections.
• Abandoned cart recovery: Send RCS messages with images of the forgotten products, a “Complete purchase” button that leads directly to checkout, and support options.
• Enhanced transactional notifications: Order confirmations with product images, shipping updates with visual tracking on an interactive map, and customer service contact buttons.
• Rich media promotional campaigns: Distribute interactive coupons, product demonstration videos, or satisfaction surveys, all within a verified brand conversation.

For example, Clarins increased its marketing campaign interactions by a factor of 10 when using RCS. ENGIE increased the number of reactivated accounts by a factor of 9 compared to SMS, achieving open rates of 82% and click-through rates of 24%.

How to implement RCS in your mobile strategy: a step-by-step guide

Implementing RCS requires a structured approach to ensure maximum effectiveness and return on investment. Actualizatec can guide you through every step of this process.

1. Verify if your audience has sufficient RCS coverage: Use market analysis tools and data from your users to estimate the percentage of your audience with RCS-compatible devices. In 2025, more than 80% of smartphones were RCS-compatible, and this number is growing.
2. Choosing an RCS (CPaaS) provider: Selecting the right provider is crucial. Look for CPaaS with global infrastructure, transparent pricing, support for fallback to SMS and robust APIs. Companies such as Twilio, Sinch and Vonage are market leaders.
3. Brand verification process with Google/operators: Initiate the process of verifying your brand with Google Business Messages. This involves submission of company documentation and validation of your business use case. Timeline can vary from 2 to 4 weeks.
4. Technical integration with your existing stack: Connect your CPaaS provider’s API with your CRM, marketing automation platform, or app backend. Low-code solutions facilitate this integration without major changes to your existing infrastructure.
5. RCS first message design: Create interactive messages that take advantage of multimedia capabilities and action buttons. Avoid the common mistake of simply replicating an SMS; think about how to generate a rich, fluid conversation.

Brand verification is a non-negotiable step to ensure the credibility and deliverability of your messages. Google requires authorized companies to verify their branding information through the Google for Developers portal before launching an RCS agent according to Google Developers.

Metrics and results: what to expect from RCS vs. other channels

RCS offers significantly higher engagement and conversion metrics than traditional SMS, and often comparable or even better than other rich messaging platforms. By 2026, RCS open rates exceed 80-90%, with CTRs ranging from 15-30%, and up to 51% in exceptional cases. This represents a CTR up to 7 times higher than SMS.

• RCS conversion rates can reach 20-40%, and up to 50-80% in outstanding cases, far exceeding the 3-5% of SMS and <2% of email.
• The ROI of RCS is remarkable: €1 invested can generate a return of €10, doubling that of traditional SMS.
• RCS read rates are between 70-85%, well above email.

To properly measure the ROI of RCS, you should not only consider open and click-through rates, but also interaction with specific buttons, engagement time with media content and, ultimately, the direct impact on conversions and sales. RCS usage grew by 111% in 2024 compared to 2023, and 26% of retailers are already using it.

Conclusion: How to decide if RCS is for your app right now

Deciding whether RCS is the right channel for your app involves evaluating its potential impact based on your audience and objectives. At Actualizatec, we have developed the RICE Framework for RCS Migration, which will help you make an informed decision.

This framework considers four key factors: Reach, Impact, Confidence and Effort. If your audience has RCS coverage above 70%, your messages include important CTAs, and you send more than 50,000 messages per month, RCS probably makes sense. If you fall below these thresholds, an optimized SMS or push notification strategy may be a more efficient investment in 2026.

Common mistakes when implementing RCS include treating it as a “fancy SMS” rather than an interactive conversation channel and not investing in brand verification. To avoid these pitfalls, it’s critical to design messages that take advantage of all RCS functionality and ensure robust integration with your existing systems. If you are ready to explore the potential of RCS, Actualizatec can help you implement and optimize your strategy, from initial audit to implementation and results analysis.

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Key Takeaways

• RCS is the successor to SMS, offering rich multimedia, interactivity and chat functionalities for enterprise communications.
• It works over data (mobile/Wi-Fi) and has automatic fallback to SMS to ensure universal delivery.
• RCS open and CTR rates significantly exceed those of SMS, with a higher ROI.
• Brand verification with Google is a critical step for the credibility and deliverability of RCS messages.
• The RICE (Reach, Impact, Confidence, Effort) Framework helps determine if RCS is the right investment for your app.
• Use cases such as onboarding, cart recovery and rich transactional notifications demonstrate the high value of RCS.

What are RCS and how do they differ from normal SMS?

RCS (Rich Communication Services) is the official successor to SMS, enabling rich messages that work over data instead of the traditional cellular network. Unlike SMS, which only sends plain text, RCS enables multimedia (images, videos), interactive buttons, read confirmations and two-way chat experiences.

How do RCS messages work technically?

RCS messages are sent over the internet (mobile data or Wi-Fi) from enterprise platforms, through Google Business Messages servers and carriers, to the user’s messaging application. They require a compatible application on the receiver (mainly Google Messages) and have an automatic fallback to SMS if the device does not support RCS or does not have an internet connection.

How much does it cost to send RCS messages compared to SMS?

In 2026, RCS costs typically range from $0.01 to $0.05 per message, while SMS can cost $0.005 to $0.02 per message. Although RCS is generally more expensive than SMS, it offers significantly greater value in terms of interactivity, branding and conversion potential, justifying the additional investment.

Which devices and operators support RCS in 2026?

Most modern Android devices support RCS through the Google Messages app. In addition, Apple has announced support for RCS in iOS 18 and later versions, dramatically increasing global coverage. In Spain and Latin America, major operators have already implemented RCS support, with growing adoption.

Do I need to verify my brand to send RCS messages?

Yes, it is mandatory to go through a brand verification process with Google Business Messages to send RCS messages. This process generally takes 2-4 weeks and requires the submission of company documentation, which is crucial to the deliverability, user trust and legitimacy of your communications.

How does RCS compare to WhatsApp Business for marketing?

RCS allows users to be reached directly in their native messaging app without them needing to save a contact or initiate a conversation, making it ideal for mass transactional and promotional communications. WhatsApp Business, on the other hand, has broader global adoption and enables more natural and complex two-way conversations, making it superior for customer support and conversational sales.

What happens if the user does not have RCS enabled on their phone?

If the user does not have RCS enabled or their device is not compatible, the message is automatically sent as a traditional SMS (automatic fallback). The sender can configure a simplified version of the message for this case, ensuring that the essential content reaches the user without the user noticing the failure of the RCS delivery attempt.

What are the best RCS use cases for mobile apps?

Some of the best use cases of RCS for mobile apps include interactive onboarding of new users, abandoned cart recovery with product images, rich transactional notifications (order confirmations with visual tracking), promotional campaigns with interactive coupons and post-purchase surveys directly in the chat.

What metrics can I measure with RCS that I can’t with SMS?

With RCS, you can measure advanced metrics such as read confirmations, clicks on specific buttons within the message, interactions with product carousels, and engagement time with multimedia content. These metrics offer a much more detailed view of user behavior and allow for more accurate campaign optimization than SMS, where only delivery can be measured.

How do I start implementing RCS in my app strategy?

To implement RCS, first verify coverage in your audience, then choose a CPaaS provider (such as Twilio or Sinch) that fits your needs. Next, start the brand verification process with Google, integrate the API with your technology stack and finally, design and test your first RCS message. Actualizatec can offer you complete guidance and support in each of these phases.

Key Terms Glossary

Rich Communication Services (RCS): Messaging protocol that succeeds SMS, enabling rich content and interactive functions through data.

CPaaS (Communications Platform as a Service): Cloud-based platform that allows companies to integrate communication functionalities (such as SMS, RCS, voice) into their own applications and systems.

Automatic fallback to SMS: Mechanism that sends a message as a traditional SMS if the receiver’s device does not support RCS or does not have an internet connection.

Google Business Messages: Google’s platform that allows companies to interact with users through RCS, with brand verification and advanced functionalities.

Brand verification: Process of validating a company’s identity by Google to ensure the authenticity of RCS messages and build trust with users.

Rich Onboarding: A process of welcoming new users to an app that uses RCS functionalities such as carousels and buttons to guide and educate in an interactive way.

RICE Framework: RCS implementation decision methodology that evaluates Reach, Impact, Confidence and Effort.