The upgrade to SMS that adds branded senders, rich cards, images and buttons inside the phone's default messaging app.
RCS is a messaging standard supported by mobile operators and built into many phones' default messaging apps. For businesses, it means messages that look closer to WhatsApp than to SMS: a verified brand name and logo, images, carousels of rich cards, and suggested reply and action buttons.
Its appeal is reach without an extra app, on phones and networks that support it. Where a recipient's phone or network does not support RCS, messages can fall back to plain SMS so they still arrive.
Treat RCS as a richer form of SMS: register your brand, design messages that still make sense if they arrive as plain text, and keep the same consent and opt-out discipline. Marichi Talks offers RCS with rich cards, buttons, a verified brand and SMS fallback.