Comparison
Overview
Company snapshot and where each provider is based.
| Field | CM.com | GatewayAPI |
|---|---|---|
| What it is | A conversational commerce and customer engagement platform offering business messaging across SMS, RCS, WhatsApp and other channels, plus voice, email and payments, via API and cloud apps. | Danish SMS gateway and messaging platform by ONLINECITY.IO offering SMS, RCS and email APIs with pay-as-you-go pricing and EU data hosting. |
| Founded | 1999 | 1999 |
| Ownership | public | private |
| Employees | 500-1,000 | 11-50 |
| HQ city | Breda | Odense |
| HQ country | Netherlands (EU) | Denmark (EU) |
What's the differenceCM.com edges ahead on the overall messaging.dev Score (58 vs 54). CM.com is public and headquartered in Breda, Netherlands (EU); GatewayAPI is private and based in Odense, Denmark (EU).
Channels
Which messaging channels each provider can send and receive on.
| Field | CM.com | GatewayAPI |
|---|---|---|
| SMS | Yes | Yes |
| MMS | No | No |
| RCS | Yes | Yes |
| Yes | No | |
| Viber | Yes | No |
| Facebook Messenger | Yes | No |
| Telegram | Yes | No |
| Apple Messages for Business | Yes | No |
| Voice | Yes | No |
| Yes | Yes |
What's the differenceThey share 3 channels. CM.com additionally offers WhatsApp, Viber, Facebook Messenger, Telegram, Apple Messages for Business, Voice.
Developer Experience
How quickly a developer can sign up and send a first message.
| Field | CM.com | GatewayAPI |
|---|---|---|
| Self-service onboarding | Yes | Yes |
| Free developer credit | No | Test credits on request |
| Docs quality | high | med |
| Documentation | Open ↗ | Open ↗ |
| SDKs | PHP, Java, Python, .NET, Node.js | — |
| Sandbox / test env | Yes | No |
| API types | REST, SMPP | REST, SMPP, Email-to-SMS |
What's the differenceOn SDKs, CM.com adds PHP, Java, Python, .NET, Node.js; CM.com offers Sandbox / test env, while GatewayAPI does not; on API types, GatewayAPI adds Email-to-SMS.
Data & Compliance
Data residency options and enterprise compliance certifications.
| Field | CM.com | GatewayAPI |
|---|---|---|
| EU data residency | Yes | Yes |
| US data residency | No | No |
| Choose region | No | Yes |
| GDPR | Yes | Yes |
| ISO 27001 | Yes | No |
| SOC 2 | No | No |
| HIPAA | No | No |
What's the differenceGatewayAPI offers Choose region, while CM.com does not; CM.com offers ISO 27001, while GatewayAPI does not.
Data Retention
How long message content and metadata are stored, and whether that is configurable.
| Field | CM.com | GatewayAPI |
|---|---|---|
| Retention policy | Not publicly documented in detail. CM.com states it hosts data in Europe and holds ISO 27001/27017/27018/27701 certifications; message content and metadata retention are governed by its privacy statement and per-customer data processing agreements rather than a single published fixed retention period. | Message content, sender and recipient are stored in the traffic log for 30 days, after which records are anonymized (message content and full sender deleted, last half of the recipient number removed). An optional "secret" message class skips storage of content, sender and recipient entirely. |
What's the differenceCM.com: Not publicly documented in detail. CM.com states it hosts data in Europe and holds ISO 27001/27017/27018/27701 certifications; message content and metadata retention are governed by its privacy statement and per-customer data processing agreements rather than a single published fixed retention period. GatewayAPI: Message content, sender and recipient are stored in the traffic log for 30 days, after which records are anonymized (message content and full sender deleted, last half of the recipient number removed). An optional "secret" message class skips storage of content, sender and recipient entirely.
Pricing & Credits
Pricing model and the cost of a first message.
| Field | CM.com | GatewayAPI |
|---|---|---|
| Pricing model | Pay-per-use (pay-as-you-go) charged per message with one fixed price per destination country, volume discounts above ~50,000 messages/month, and optional subscription tiers. | Pay-as-you-go per-message pricing with prepaid credit; no monthly subscriptions or fees (except short-code countries), with negotiated discounts for high volumes. |
| SMS starting price | Not published (per-country pay-per-use pricing requires selecting a region on the pricing page) | From €0.0061 per SMS (standard class, cheapest destination on the public price list; e.g. €0.0401 to Denmark) |
| Free developer credit | No | Test credits on request |
What's the differenceCM.com and GatewayAPI are closely matched on pricing & credits — no material differences in the tracked fields.
Reach & Reliability
Global coverage and delivery dependability.
| Field | CM.com | GatewayAPI |
|---|---|---|
| Countries covered | 0 | 200 |
| Direct operator connections | Yes | Yes |
| Published uptime SLA | No published SLA | No published SLA (99.99%+ historical uptime claimed) |
What's the differenceGatewayAPI leads on Countries covered (200 vs 0 for CM.com).
Company & Trust
Independent reviews and company profile.
| Field | CM.com | GatewayAPI |
|---|---|---|
| G2 rating | 4.8 | 4.9 |
| G2 reviews | 12 | 7 |
| Ownership | public | private |
| Employees | 500-1,000 | 11-50 |
What's the differenceGatewayAPI leads on G2 rating (4.9 vs 4.8 for CM.com); CM.com leads on G2 reviews (12 vs 7 for GatewayAPI).
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