Rich Communication Services (RCS) is a mobile messaging standard, developed through the mobile industry body GSMA, that upgrades the native texting app on phones beyond plain SMS and MMS. For people texting each other, it adds features such as high-quality images, typing indicators, read receipts and group chats over a data connection. For businesses, RCS business messaging adds verified sender names and logos, rich cards, carousels, buttons and suggested replies inside the phone’s normal messaging app. Where a recipient’s phone or carrier does not support RCS, business platforms typically fall back to SMS or MMS.
At a glance
- RCS works inside the phone’s built-in messaging app; customers do not install a separate app.
- Business messages can show a verified brand name and logo, plus images, cards, carousels, buttons and suggested replies.
- Messages travel over mobile data or Wi-Fi rather than the SMS channel.
- Reach depends on device, operating system, carrier and country, and support is still expanding.
- Most business platforms fall back to SMS or MMS when RCS is not available.
What problem it solves
SMS reaches almost every phone, but it is plain text from a number. Customers often cannot tell a legitimate business message from a scam, links look suspicious, and anything interactive means sending the customer to a website. MMS adds media but little else.
RCS business messaging addresses those limits. A verified brand identity helps customers trust the sender. Rich cards and buttons let customers confirm an appointment, track an order or choose an option without leaving the conversation, and businesses can see delivery and read status. For customer service and transactional messaging, that can make texting a more complete digital channel.
How it works
Native messaging, over data. RCS is built into many phones’ default messaging apps, such as Google Messages on Android and, since Apple added support in 2024, Messages on iPhone where carriers support it. Messages use the phone’s data connection or Wi-Fi.
Business agents. A business sends RCS messages through a registered sender, commonly called an agent, set up through a messaging provider or CPaaS platform. Registration usually includes brand details, logo, description, use cases and contact information, and review steps before launch. Requirements and timelines vary by provider, carrier and country.
Rich content. Business messages can include rich cards (image, title, description and buttons), carousels of several cards, suggested replies, and suggested actions such as opening a link, dialing a number or adding a calendar event.
Capability check and fallback. Before sending, the platform checks whether the recipient’s device and carrier can receive RCS. If not, it typically sends an SMS or MMS version instead, from a number that must meet the rules for that channel, such as 10DLC, toll-free or a short code in the US.
Pricing. Providers charge in different ways, such as per message, by message type or per conversation, with rates that differ by market.
For messaging and other channels in a contact center, see our contact center as a service solution page.
When it matters for buyers
- Customer-facing notifications and support. Appointment reminders, delivery updates and service conversations benefit most from branding and buttons.
- Fraud and trust concerns. Verified sender identity can help customers tell genuine messages from impersonation attempts, though it does not remove the need for other safeguards.
- Choosing a messaging or CCaaS platform. RCS support, fallback handling and reporting differ between providers.
- Planning reach. In markets or customer bases with uneven RCS support, the SMS fallback still carries a large share of messages.
Questions to ask vendors
- Which countries and carriers can we reach with RCS business messaging through your platform today?
- What does sender registration involve, how long does it take, and who handles it?
- How does fallback to SMS or MMS work, and how is fallback traffic priced and registered?
- How is RCS priced: per message, per conversation or by message type?
- What delivery, read and interaction reporting do we get?
- Can our contact center agents send and receive RCS in the same workspace as other channels?
How it differs from SMS and MMS
SMS sends short plain-text messages through the mobile network’s own messaging service and reaches nearly every phone. MMS adds images and longer messages with limited formatting. RCS runs over data, supports rich media and interactive elements, and for businesses adds verified branding, but it only works where the device and carrier support it. In practice, most business messaging programs use RCS where available and SMS or MMS as the fallback.