SimplyRCS vs SMS.es Business Messenger
SimplyRCS
simplyrcs.aiSMS.es Business Messenger
rcs.esSide by side
| Figure | SimplyRCS | SMS.es Business Messenger |
|---|---|---|
| Price from | $20/mo | €20/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | Yes | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 7 | 8 |
| Spec score · RCS Messaging Platforms | 8.6 (#4) | 8.4 (#6) |
| Company founding | LinkedIn lists Signalmash as founded in 2020, while the Oregon incorporation information on the company site gives Mash Technologies' registration date as 27 April 2021. | Iberinform records G729 S.L. as established on 1 January 2016. |
| Company legal name | SimplyRCS and Signalmash are stated to be brands and DBAs of Mash Technologies Corporation. | SMS.es is the commercial brand of G729 S.L., tax ID B45850724. |
| Documentation depth | The reference is publicly readable without an account, includes endpoint examples and provides a machine-readable OpenAPI specification. | Public RCS documentation includes setup guidance, OAuth2 examples, cURL and Node.js samples, endpoint tables, webhook behavior and opt-in rules. |
| Integrations | The industries page names Salesforce, HubSpot and Zoho under CRM integrations and also lists CDP, ecommerce, scheduling, helpdesk, loyalty, payments and REST/webhook connections. | An RCS agent is created in Google's RCS console and connected to SMS.es Business Messenger using an Agent ID, region, and webhook URL. |
| Security | SimplyRCS states that it is SOC 2 Type II attested, encrypts data in transit and at rest, uses scoped least-privilege access and signs 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 | Basic email support is free with a stated one-business-day response target; premium adds an account manager, Slack access and campaign assistance. | The Inicio tier includes email support, while the Empresa tier includes priority email and chat support. |
Plans
SimplyRCS
- Pay-as-you-goFree
- AI Starter$20 a month
- Starter$20 a month
- AI Pro$90 a month
- Pro$90 a month
- Premium Support$250 a month
- Verified RCS Agent$250 a month
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
SimplyRCS
SimplyRCS is a US-focused platform for sending verified branded RCS, SMS, and MMS business messages. It supports broadcasts to lists or segments, two-way conversations, and automatic fallback from RCS to MMS or SMS. Users can describe a bot in plain English, then edit the AI-assembled bot on a visual canvas. Analytics cover delivery, reads, taps, conversions, and cost, with CSV exports and scheduled reports. Named integrations include Salesforce, HubSpot, Zoho, Shopify, scheduling and EHR systems, and helpdesks; a REST API with webhooks is also available. The public API documents 195 endpoints across messaging, sender IDs, bots, contacts, compliance, analytics, and webhooks. SimplyRCS says it checks consent before sends, honors STOP and HELP immediately, enforces quiet hours, and logs consent events. The free plan has no platform charge, with messaging at published rates; paid plans start at $20 a month. Separate sender fees include an annual 200.00 USD Aegis review and a one-time 500.00 USD T-Mobile activation.
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.