SMS.es Business Messenger provides businesses with RCS campaign messaging through a REST API and web interface. Its Campaign API can create, clone, list, retrieve, update, activate, pause, and delete campaigns. Messages can use rich cards, carousels, suggested replies, action buttons, high-resolution images and video, location sharing, and branded sender identity, with automatic SMS fallback. API authentication uses OAuth2 client credentials, and access tokens remain valid for seven days. Configured webhooks deliver real-time notifications about message delivery, reads, and user replies. To connect an RCS agent, businesses create it in Google's RCS console and provide its Agent ID, region, and webhook URL. RCS requires explicit opt-in, which the setup guide manages through web forms and keyword rules. Before launch, an agent can message only test devices; public availability follows approval by each carrier. Supported test devices include Android with Google Messages and iOS 18 or later. The listed Inicio tier charges €0.004 / msg, while Empresa charges €0.0032 / msg. SMS.es identifies itself as the commercial brand of G729 S.L.
Who it is for
The service suits businesses sending promotional, transactional, OTP, or multi-use RCS campaigns that need API access and SMS fallback. Teams should be prepared to manage opt-in and carrier approval before public launch.
What is good
- Campaign API supports campaign lifecycle management.
- Messages support rich media and branded sender identity.
- Automatic SMS fallback is available.
- Webhooks report delivery, reads, and replies in real time.
- API access uses OAuth2 client credentials.
What to know first
- Free plan is not available.
- RCS requires explicit opt-in.
- Pre-launch agents can message only test devices.
- Public availability depends on carrier approval.
Verdict
SMS.es Business Messenger combines RCS campaign tools, rich formats, webhooks, and SMS fallback. Check the opt-in and carrier approval requirements, as well as the per-message rates, before choosing a tier.
SMS.es Business Messenger plans and pricing
All plansCompared on RCS messaging platforms
- Free plan
- No
- API access
- Yes
- Two-way messaging
- Yes
- Rich media messages
- Yes
- Verified sender
- Yes
- Delivery analytics
- Yes
- Webhook support
- Yes
