Comparison
Overview
Company snapshot and where each provider is based.
| Field | GatewayAPI | Vonage |
|---|---|---|
| What it is | 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. | Communications APIs for SMS, voice, video, and messaging (part of Ericsson) |
| Founded | 1999 | 2001 |
| Ownership | private | public |
| Employees | 11-50 | 2,000-3,000 |
| HQ city | Odense | Holmdel |
| HQ country | Denmark (EU) | USA |
What's the differenceVonage edges ahead on the overall messaging.dev Score (89 vs 54). GatewayAPI is private and headquartered in Odense, Denmark (EU); Vonage is public and based in Holmdel, USA.
Channels
Which messaging channels each provider can send and receive on.
| Field | GatewayAPI | Vonage |
|---|---|---|
| SMS | Yes | Yes |
| MMS | No | Yes |
| RCS | Yes | Yes |
| No | Yes | |
| Viber | No | Yes |
| Facebook Messenger | No | Yes |
| Telegram | No | No |
| Apple Messages for Business | No | No |
| Voice | No | Yes |
| Yes | No |
What's the differenceThey share 2 channels. GatewayAPI additionally offers Email, while Vonage additionally offers MMS, WhatsApp, Viber, Facebook Messenger, Voice.
Developer Experience
How quickly a developer can sign up and send a first message.
| Field | GatewayAPI | Vonage |
|---|---|---|
| Self-service onboarding | Yes | Yes |
| Free developer credit | Test credits on request | €2 free trial credit |
| Docs quality | med | high |
| Documentation | Open ↗ | Open ↗ |
| SDKs | — | Node.js, Python, PHP, Java, C#, Ruby, Kotlin |
| Sandbox / test env | No | Yes |
| API types | REST, SMPP, Email-to-SMS | REST |
What's the differenceOn SDKs, Vonage adds Node.js, Python, PHP, Java, C#, Ruby, Kotlin; Vonage offers Sandbox / test env, while GatewayAPI does not; on API types, GatewayAPI adds SMPP, Email-to-SMS.
Data & Compliance
Data residency options and enterprise compliance certifications.
| Field | GatewayAPI | Vonage |
|---|---|---|
| EU data residency | Yes | Yes |
| US data residency | No | Yes |
| Choose region | Yes | Yes |
| GDPR | Yes | Yes |
| ISO 27001 | No | Yes |
| SOC 2 | No | Yes |
| HIPAA | No | Yes |
What's the differenceVonage offers US data residency, while GatewayAPI does not; Vonage offers ISO 27001, while GatewayAPI does not; Vonage offers SOC 2, while GatewayAPI does not; Vonage offers HIPAA, while GatewayAPI does not.
Data Retention
How long message content and metadata are stored, and whether that is configurable.
| Field | GatewayAPI | Vonage |
|---|---|---|
| Retention policy | 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. | Vonage retains message and call records to provide services and meet legal obligations; message content retention is limited and, for some APIs, configurable, with data-processing terms available for enterprise customers. |
What's the differenceGatewayAPI: 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. Vonage: Vonage retains message and call records to provide services and meet legal obligations; message content retention is limited and, for some APIs, configurable, with data-processing terms available for enterprise customers.
Pricing & Credits
Pricing model and the cost of a first message.
| Field | GatewayAPI | Vonage |
|---|---|---|
| Pricing model | 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. | Pay-as-you-go per message/minute with volume discounts |
| SMS starting price | From €0.0061 per SMS (standard class, cheapest destination on the public price list; e.g. €0.0401 to Denmark) | Approx. $0.0072 per US SMS segment (plus carrier fees) |
| Free developer credit | Test credits on request | €2 free trial credit |
What's the differenceGatewayAPI and Vonage are closely matched on pricing & credits — no material differences in the tracked fields.
Reach & Reliability
Global coverage and delivery dependability.
| Field | GatewayAPI | Vonage |
|---|---|---|
| Countries covered | 200 | 200 |
| Direct operator connections | Yes | Yes |
| Published uptime SLA | No published SLA (99.99%+ historical uptime claimed) | 99.95% |
What's the differenceGatewayAPI and Vonage are closely matched on reach & reliability — no material differences in the tracked fields.
Company & Trust
Independent reviews and company profile.
| Field | GatewayAPI | Vonage |
|---|---|---|
| G2 rating | 4.9 | 4.3 |
| G2 reviews | 7 | 200 |
| Ownership | private | public |
| Employees | 11-50 | 2,000-3,000 |
What's the differenceGatewayAPI leads on G2 rating (4.9 vs 4.3 for Vonage); Vonage leads on G2 reviews (200 vs 7 for GatewayAPI).
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