RCS Builder’s Log: Cards, Carousels, and WebView

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Notes, takeaways, and field tests from building and deploying RCS in the wild.

Cards Don’t Need Carousels

A standalone card can hold its own — we proved it with Zach’s expert profile. You can also launch a phone call directly from RCS — no browser, no OS link.

WebView: In-App > Browser

WebView is the game-changer. Instead of bouncing users out to a browser, you keep them inside the messaging app. Tighter loop. Fewer drop-offs. Smoother handoffs.

Support for WebView in RCS Business Messaging rolled out in April 2025. It builds on the Open URL action — letting you load full web experiences (like payments or forms) right inside the conversation.

RCS stops being “just another link channel” and becomes a true in-app experience.

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