Sendexa RCS Business Messaging API vs SMS.es Business Messenger
Sendexa RCS Business Messaging API
sendexa.coSMS.es Business Messenger
rcs.esSide by side
| Figure | Sendexa RCS Business Messaging API | SMS.es Business Messenger |
|---|---|---|
| Price from | — | €20/mo |
| Free plan | — | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 3 | 8 |
| Spec score · RCS Messaging Platforms | 7.6 (#12) | 8.4 (#6) |
| Authentication | RCS API requests use HTTP Basic Auth with a dashboard Base64 token and HTTPS. | API access uses OAuth2 client credentials, and the page says access tokens are valid for seven days. |
| Intended users | Sendexa identifies banks, fintechs, telcos, retail, e-commerce, and customer support teams as RCS use cases. | The product is presented for businesses sending RCS campaigns, with use cases including promotional, transactional, OTP, and multi-use messaging. |
| Security | Sendexa’s developer security guidance specifies TLS 1.2 as the minimum and HMAC-SHA256 signatures for webhooks. | The RCS guide says business messages use transport-level TLS encryption; its end-to-end encryption statement applies to person-to-person conversations in Google Messages. |
| Support | The RCS plans list email support for Starter, priority support for Business, and 24/7 dedicated support for Enterprise. | The Inicio tier includes email support, while the Empresa tier includes priority email and chat support. |
Plans
Sendexa RCS Business Messaging API
- Business$0.03, paid once
- Starter$0.03, paid once
- EnterprisePriced on request
SMS.es Business Messenger
- EmpresaFree
- InicioFree
- SMS Starter€5, paid once
- RCS channel add-on€20 a month
- Conversacional€39 a month
- Omnicanal€79 a month
- EmpresarialPriced on request
- EnterprisePriced on request
In their own words
Sendexa RCS Business Messaging API
Sendexa RCS Business Messaging API has no write-up on Specifiction yet; its figures are above.
SMS.es Business Messenger
SMS.es Business Messenger provides RCS business messaging through a REST API and web interface, with campaign management, webhooks and automatic SMS fallback. Its Campaign API can create, clone, list, retrieve, update, activate, pause and delete campaigns. RCS messages can include rich cards, carousels, suggested replies, action buttons, high-resolution images and video, location sharing and branded sender identity. OAuth2 client credentials provide API access, and tokens are valid for seven days. Configured webhooks report delivered, read and user-reply events in real time. To connect an RCS agent, create it in Google's RCS console and provide its Agent ID, region and webhook URL. RCS requires explicit opt-in, which can be managed with web forms and keyword rules. Before launch, the agent can message only test devices; public availability follows approval by each carrier. The setup guide identifies Android devices using Google Messages and iOS 18 or later as supported test devices. The Inicio tier lists €0.004 per message, and Empresa lists €0.0032 per message; both show free. Empresarial pricing is custom and not specified.