RCS-Box

RCS-Box is ranked #2 of 34 in RCS messaging platforms on The Geeks Club. It runs on API, Web. There is a free plan. Paid plans start at €49/mo.

RCS-Box plans and pricing

Free Free 100 sessions per calendar month api.box.rcs.jetzt · 30 Sept 2026

Skizze €49/mo monthly XL Messages · Standard or Newsletter mode railslove.com · 30 Sept 2026

Atelier €249/mo monthly XL Messages · Standard or Newsletter mode railslove.com · 30 Sept 2026

Manufaktur €999/mo monthly XL Messages · Standard or Newsletter mode railslove.com · 30 Sept 2026

RCS-Box

Product type: RCS-Box is a multi-tenant API for Google RCS Business Messaging.
Hosting: The API includes EU hosting and a German contract partner.
Messaging formats: It supports text with suggestions, rich cards, carousels, XL messages, and automatic video and image unfurling.
Webhooks: Webhooks support incoming messages plus opt-in and opt-out events.
XL messages: XL messages are available in all Box plans from Skizze and count as one conversation.
Newsletter mode: Each plan can use standard mode or newsletter mode, where billing uses active recipients per month.
Authentication: Authenticated API requests use a tenant-specific 64-character hexadecimal API key via Bearer or X-API-Key headers.
Tenant isolation: The API provides brand-level isolation with dedicated API keys per tenant.
Country allowlist: Each tenant has a configurable country allowlist, defaulting to Germany with the +49 prefix.
Opt-out handling: RCS-Box automatically handles STOP and START blacklist status per agent.
Webhook security: Forwarded webhooks include a lowercase hexadecimal HMAC-SHA256 signature calculated with the tenant API key.
Audience: The API is presented for development teams, CTOs, and tech leads in startups, scale-ups, and enterprise technology units.
Headquarters: Cologne, Germany
Price from: €49/mo

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