RCS-Box
7.3#3 in rcs messaging platformsFrom €49 a monthFree planWebAPI
VisitRCS-Box vs SMS.es Business Messenger
SMS.es Business Messenger
7.3#4 in rcs messaging platformsFrom €39 a monthFree planWebAPI
VisitWhat both publish
| Fact | RCS-Box | SMS.es Business Messenger |
|---|---|---|
| Authentication | Authenticated API calls use a tenant-specific 64-character hexadecimal key through Bearer or X-API-Key headers. | API access uses OAuth2 client credentials, and the page says access tokens are valid for seven days. |
| Company headquarters | LinkedIn lists Railslove's headquarters in Cologne, North Rhine-Westphalia, Germany. | The registered address is Avenida San Crispín 72, Fuensalida, Toledo, Spain. |
| Company legal name | The legal operator identified in the imprint is Railslove GmbH. | SMS.es is the commercial brand of G729 S.L., tax ID B45850724. |
| Company size | LinkedIn lists Railslove in the 11–50 employee range. | LinkedIn lists SMS.es as privately held with 11–50 employees and headquarters in Fuensalida, Madrid. |
| Messaging formats | It supports text with suggestions, rich cards, carousels, XL messages, and automatic video and image unfurling. | RCS supports rich cards, carousels, suggested replies, action buttons, high-resolution images and video, location sharing, and branded sender identity. |
RCS-Box plans
- FreeFree
- Skizze€49 a month
- Atelier€249 a month
- Manufaktur€999 a month
SMS.es Business Messenger plans
- InicioFree
- EmpresaFree
- SMS Starter€5, paid once
- RCS channel add-on€20 a month
- Conversacional€39 a month
- Omnicanal€79 a month
Pick RCS-Box if…
RCS-Box is aimed at development teams, CTOs, and tech leads adding Google RCS Business Messaging to services. Its tenant isolation and webhook options may suit teams managing messaging for multiple brands.
Pick SMS.es Business Messenger if…
This service suits businesses sending promotional, transactional, OTP, or mixed RCS campaigns through an API or web interface. It is most relevant where teams can manage opt-in and carrier approval before public launch.