The future of business messaging is already taking shape. It will combine the ubiquity of SMS, the interactivity of RCS, and emerging digital channels, with reach, security, and user experience becoming increasingly important factors.
The channel alone is no longer what matters. Relevance, trust, verification, personalization, and timing are becoming just as important.
According to a study conducted by Kantar and commissioned by Meta, covering markets including Brazil and Argentina, 73.3% of surveyed consumers prefer messaging when communicating with a business; 72.4% are more likely to make a purchase when a brand offers messaging; and 74.6% trust a business more when they are able to exchange messages with it.
The inbox is becoming a space where marketing, customer service, identity, and transactions converge. WhatsApp, RCS messaging, SMS, and email are beginning to play different roles within a single omnichannel communications strategy.
SMS provides reach, availability, and support for critical use cases such as authentication. RCS adds interactivity, rich content, and branded identity. WhatsApp brings conversations into an environment users already frequent and enables customer service and relationship-building experiences through WhatsApp Business integration. Email continues to play an important role in longer-form communications and long-term customer relationships.
The next step is to assign a specific role to each channel: which interaction it should handle, for whom, when, through which channel, and with what level of context and verification.
Gartner notes that the adoption of RCS and WhatsApp is reshaping conversational customer service, and that channel selection should take into account factors such as use case, geography, content, engagement, customer satisfaction, and cost. From this perspective, the value lies in selecting and combining channels effectively.
SMS, RCS Business Messaging (RBM), and over-the-top (OTT) channels are competing for users’ attention.
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The evolution of messaging is expanding the role of the inbox. In addition to receiving communications, users can increasingly interact with brands directly within the messaging experience.
RCS is one example. Its capabilities allow businesses to incorporate images, buttons, suggested replies, and branded identity directly into the user’s inbox. But the broader trend goes beyond RCS: business messaging is beginning to support multiple stages of the customer journey, from promotional communications and customer inquiries to notifications, authentication, and transactions.
Juniper Research estimates that business RCS messaging will grow from 125 billion messages in 2026 to more than 485 billion by 2030. Authentication is among the use cases expected to drive that growth, alongside the ability to incorporate verified identity and branding into business communications.
In this environment, trust is also becoming part of the customer experience. The evolution of messaging standards is introducing mechanisms designed to strengthen business identification, security, and interoperability. As a result, the ability to identify who is behind a message is becoming increasingly important.
User verification and the identification of the businesses involved in an interaction are no longer purely technical considerations. They also help ensure that communications are recognizable, legitimate, and consistent with a brand’s identity.
Personalization also means determining the most appropriate channel for each interaction based on context, urgency, content type, and the customer’s stage in the journey.
A critical alert may require the reach of SMS. A communication that calls for interaction may be better suited to RCS messaging. A conversation that requires continuity may work best on WhatsApp. Longer-form communications may still be more appropriate for email.
The goal is to build an experience in which channels play complementary roles and users do not have to start over every time they move from one channel to another.
In this context, choosing the right channel is no longer an operational detail; it is a business decision. At Plusmo, through our Plusmo Engage business unit, we work with companies looking to do exactly that: combine SMS, RCS, and the WhatsApp Business API within a messaging strategy that prioritizes context, verification, and timing over sheer volume.
Because winning the next battle in marketing will not depend on adding more channels, but on knowing which ones are worth showing up in.
