If you’re feeling pressure to “upgrade” your SMS marketing because every platform is shouting about RCS, you’re not alone. I researched what it actually takes to switch. Here’s the honest answer. It’s not a yes-or-no decision. It’s a timing and fundamentals decision.

What RCS Is (And Why It’s Trending Now)

RCS stands for Rich Communication Services. It is not new. The standard has been around since 2007.

So why is it suddenly everywhere in 2026?

For a long time, it did not matter because carrier support was inconsistent. Google eventually made it reliable on Android. The real shift was Apple. iPhone did not support RCS until iOS 18 in fall 2024. Once that happened, rich messaging across Android and iPhone became possible at real scale. That is the hype you are seeing now.

What RCS Gives You That SMS Can’t

A typical marketing SMS is plain text. It often comes from a random number. There is no brand name or logo unless the subscriber manually saves you as a contact. You are also limited to 160 characters.

Even MMS has constraints. Images are commonly compressed and blurry because of strict file size limits.

With RCS, the experience can look more like a modern brand message:

• Your business name and logo show up
• You can get a verified badge
• Images and videos can be higher resolution
• You can include tap buttons inside the thread (Shop Now, Track Order, Confirm Appointment)

Once you receive an RCS message as a consumer, it is hard to unsee the difference.

Should Ecommerce Brands Switch From SMS to RCS?

Here is the truth: most ecommerce brands should not think of this as “switching.” SMS is still the foundation because it reaches every phone on every carrier. That matters for anything time-sensitive.

RCS is worth testing on top of SMS once your basics are solid.

What It Takes to Start Using RCS in Klaviyo

Even if you are using Klaviyo, you still have to go through an approval process to send RCS.

Klaviyo can remove the need to stitch in a separate RCS vendor since RCS is built into the platform. But you still have to:

• Set up a business profile (logo, name, website, company info)
• Verify that profile
• Get approved before sending

I do not have an exact timeline for approval. If timing matters for a launch, confirm the current timeline directly with Klaviyo before you commit to a date.

One helpful detail: if someone cannot receive RCS, Klaviyo can fall back to SMS. That means you can test without losing reach.

Where RCS Is Available (And Who Should Wait)

Right now, RCS is available in ten countries:

• United States
• United Kingdom
• Germany
• France
• Italy
• Spain
• Poland
• Austria
• Sweden
• Denmark

If most of your audience is outside those markets, this is not worth prioritizing yet.

Even in supported countries, treat RCS as a test. Do not treat it as a replacement.

Why RCS Can Be Better for Compliance and Reporting

I expected compliance and reporting to be messier than SMS. In a few ways, it can be cleaner.

Delivery Reporting Can Be More Definitive

With SMS, delivery reporting is not always definitive. In a small percentage of cases, if nothing comes back after a certain window, the system may assume delivery.

With RCS, messages can return clearer delivery confirmation or failure reasons. You are not left guessing as often.

Verified Sender Profiles Build Trust

RCS supports verified sender profiles. That can help reduce spoofing and phishing concerns. Subscribers can see that the message is actually from your brand.

Opting Out and Blocking Can Be More Intuitive

In states with stricter texting laws, like Florida’s FTSA, the ability to block a verified sender can feel more intuitive than “text STOP to unsubscribe.”

When RCS Is Worth Testing (Real Ecommerce Use Cases)

If your fundamentals are solid, RCS can be a strong next layer for moments where visuals and interactivity matter, like:

• A rich product carousel
• A shoppable abandoned cart reminder with the product image and size in the message
• A visual order tracking update

SMS should still be your default for anything where delivery to every subscriber matters, like:

• Shipping updates
• Flash sales
• Time-sensitive launches

How to Measure RCS Performance Honestly

If you test RCS, do not judge it by click rate alone.

RCS can show fewer bot clicks than SMS. A lower click number can mean cleaner data, not worse performance.

If you are comparing channels, look at:

• conversion rate
• revenue per recipient

Should You Switch to RCS Now?

My honest take is simple.

This is not hype you should ignore. It is also not an emergency switch.

If you are in one of the supported countries and you already use SMS marketing, starting the verification process is worth doing. Just do not expect it to be instant. Do not expect it to replace SMS.

And if your fundamentals are not solid yet, fix that first. RCS is a genuinely good next layer. It is not a rescue plan for a leaky foundation.