Comparison
Overview
Company snapshot and where each provider is based.
| Field | GatewayAPI | IDM interactive digital media |
|---|---|---|
| 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. | German CPaaS provider offering SMS, voice, and multichannel A2P messaging APIs with infrastructure hosted exclusively in German data centers. |
| Founded | 1999 | 2003 |
| Ownership | private | private |
| Employees | 11-50 | 11-50 |
| HQ city | Odense | Lübeck |
| HQ country | Denmark (EU) | Germany (EU) |
What's the differenceGatewayAPI edges ahead on the overall messaging.dev Score (54 vs 47). GatewayAPI is private and headquartered in Odense, Denmark (EU); IDM interactive digital media is private and based in Lübeck, Germany (EU).
Channels
Which messaging channels each provider can send and receive on.
| Field | GatewayAPI | IDM interactive digital media |
|---|---|---|
| SMS | Yes | Yes |
| MMS | No | No |
| RCS | Yes | No |
| No | Yes | |
| Viber | No | No |
| Facebook Messenger | No | Yes |
| Telegram | No | Yes |
| Apple Messages for Business | No | No |
| Voice | No | Yes |
| Yes | No |
What's the differenceThey share 1 channels. GatewayAPI additionally offers RCS, Email, while IDM interactive digital media additionally offers WhatsApp, Facebook Messenger, Telegram, Voice.
Developer Experience
How quickly a developer can sign up and send a first message.
| Field | GatewayAPI | IDM interactive digital media |
|---|---|---|
| Self-service onboarding | Yes | Yes |
| Free developer credit | Test credits on request | No |
| Docs quality | med | med |
| Documentation | Open ↗ | Open ↗ |
| SDKs | — | — |
| Sandbox / test env | No | No |
| API types | REST, SMPP, Email-to-SMS | REST, SMPP |
What's the differenceOn API types, GatewayAPI adds Email-to-SMS.
Data & Compliance
Data residency options and enterprise compliance certifications.
| Field | GatewayAPI | IDM interactive digital media |
|---|---|---|
| EU data residency | Yes | Yes |
| US data residency | No | No |
| Choose region | Yes | No |
| GDPR | Yes | Yes |
| ISO 27001 | No | Yes |
| SOC 2 | No | No |
| HIPAA | No | No |
What's the differenceGatewayAPI offers Choose region, while IDM interactive digital media does not; IDM interactive digital media offers ISO 27001, while GatewayAPI does not.
Data Retention
How long message content and metadata are stored, and whether that is configurable.
| Field | GatewayAPI | IDM interactive digital media |
|---|---|---|
| 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. | Message-content retention is not publicly documented in detail. The privacy policy states server logs are kept for a maximum of 30 days, telecommunications traffic data is deleted per statutory retention periods, and contract/billing data is retained up to 10 years under German law (§147 AO, §257 HGB). All processing occurs in German (or EEA) data centers. |
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. IDM interactive digital media: Message-content retention is not publicly documented in detail. The privacy policy states server logs are kept for a maximum of 30 days, telecommunications traffic data is deleted per statutory retention periods, and contract/billing data is retained up to 10 years under German law (§147 AO, §257 HGB). All processing occurs in German (or EEA) data centers.
Pricing & Credits
Pricing model and the cost of a first message.
| Field | GatewayAPI | IDM interactive digital media |
|---|---|---|
| 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. | Volume-based pay-per-message pricing, primarily via custom enterprise quotes (no public price list). |
| SMS starting price | From €0.0061 per SMS (standard class, cheapest destination on the public price list; e.g. €0.0401 to Denmark) | Not published |
| Free developer credit | Test credits on request | No |
What's the differenceGatewayAPI and IDM interactive digital media are closely matched on pricing & credits — no material differences in the tracked fields.
Reach & Reliability
Global coverage and delivery dependability.
| Field | GatewayAPI | IDM interactive digital media |
|---|---|---|
| Countries covered | 200 | 180 |
| Direct operator connections | Yes | Yes |
| Published uptime SLA | No published SLA (99.99%+ historical uptime claimed) | 99.99% (SLA) |
What's the differenceGatewayAPI leads on Countries covered (200 vs 180 for IDM interactive digital media).
Company & Trust
Independent reviews and company profile.
| Field | GatewayAPI | IDM interactive digital media |
|---|---|---|
| G2 rating | 4.9 | 0.0 |
| G2 reviews | 7 | 0 |
| Ownership | private | private |
| Employees | 11-50 | 11-50 |
What's the differenceGatewayAPI leads on G2 rating (4.9 vs 0 for IDM interactive digital media); GatewayAPI leads on G2 reviews (7 vs 0 for IDM interactive digital media).
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