Comparison
Overview
Company snapshot and where each provider is based.
| Field | LINK Mobility | SMSAPI |
|---|---|---|
| What it is | European communications-platform-as-a-service (CPaaS) provider offering SMS, MMS, RCS, WhatsApp, Viber, Facebook Messenger, Telegram, voice, and email messaging through REST, SMPP, and SOAP APIs. | A Polish business-messaging platform (a brand of LINK Mobility Poland, part of LINK Mobility Group) offering bulk SMS, MMS, VMS voice, RCS and WhatsApp Business messaging via REST API and a web interface. |
| Founded | 2001 | 2007 |
| Ownership | public | public |
| Employees | 500-1,000 | 51-200 |
| HQ city | Oslo | Gliwice |
| HQ country | Norway | Poland (EU) |
What's the differenceSMSAPI edges ahead on the overall messaging.dev Score (44 vs 36). LINK Mobility is public and headquartered in Oslo, Norway; SMSAPI is public and based in Gliwice, Poland (EU).
Channels
Which messaging channels each provider can send and receive on.
| Field | LINK Mobility | SMSAPI |
|---|---|---|
| SMS | Yes | Yes |
| MMS | Yes | Yes |
| RCS | Yes | Yes |
| Yes | Yes | |
| Viber | Yes | No |
| Facebook Messenger | Yes | No |
| Telegram | Yes | No |
| Apple Messages for Business | No | No |
| Voice | Yes | Yes |
| Yes | No |
What's the differenceThey share 5 channels. LINK Mobility additionally offers Viber, Facebook Messenger, Telegram, Email.
Developer Experience
How quickly a developer can sign up and send a first message.
| Field | LINK Mobility | SMSAPI |
|---|---|---|
| Self-service onboarding | No | Yes |
| Free developer credit | No | Free test SMS on signup |
| Docs quality | med | high |
| Documentation | Open ↗ | Open ↗ |
| SDKs | — | PHP, Python, JavaScript, Java, C#, Go, Bash |
| Sandbox / test env | No | Yes |
| API types | REST, SMPP, SOAP | REST, SMTP |
What's the differenceSMSAPI offers Self-service onboarding, while LINK Mobility does not; on SDKs, SMSAPI adds PHP, Python, JavaScript, Java, C#, Go, Bash; SMSAPI offers Sandbox / test env, while LINK Mobility does not; on API types, LINK Mobility adds SMPP, SOAP; SMSAPI adds SMTP.
Data & Compliance
Data residency options and enterprise compliance certifications.
| Field | LINK Mobility | SMSAPI |
|---|---|---|
| EU data residency | Yes | Yes |
| US data residency | No | No |
| Choose region | No | No |
| GDPR | Yes | Yes |
| ISO 27001 | Yes | Yes |
| SOC 2 | No | No |
| HIPAA | No | No |
What's the differenceLINK Mobility and SMSAPI are closely matched on data & compliance — no material differences in the tracked fields.
Data Retention
How long message content and metadata are stored, and whether that is configurable.
| Field | LINK Mobility | SMSAPI |
|---|---|---|
| Retention policy | Not publicly documented in detail. LINK Mobility processes personal data under GDPR as a data processor and states in its GDPR documentation that it operates an integrated ISO 27001 information-security management system (ISMS) with the goal of meeting the requirements of the ISAE 3000 report; message content and metadata retention periods are governed by customer contracts/data-processing agreements rather than a published fixed retention window. | Messages are stored in accordance with applicable law and disclosed only when required by a lawful request; phone numbers are used solely for SMS campaign purposes. No specific retention period is publicly documented. All data is held within the EEA on two redundant data centers in Poland (ATMAN and T-Mobile, over 150 km apart). |
What's the differenceLINK Mobility: Not publicly documented in detail. LINK Mobility processes personal data under GDPR as a data processor and states in its GDPR documentation that it operates an integrated ISO 27001 information-security management system (ISMS) with the goal of meeting the requirements of the ISAE 3000 report; message content and metadata retention periods are governed by customer contracts/data-processing agreements rather than a published fixed retention window. SMSAPI: Messages are stored in accordance with applicable law and disclosed only when required by a lawful request; phone numbers are used solely for SMS campaign purposes. No specific retention period is publicly documented. All data is held within the EEA on two redundant data centers in Poland (ATMAN and T-Mobile, over 150 km apart).
Pricing & Credits
Pricing model and the cost of a first message.
| Field | LINK Mobility | SMSAPI |
|---|---|---|
| Pricing model | Volume-based, pay-as-you-go enterprise pricing negotiated through sales; per-message rates are not published on the main platform. | Pay-as-you-go prepaid credit — pay only for sent messages with no setup fee or contract; minimum top-up around €30. |
| SMS starting price | Not published | From ~€0.04 per SMS (international, varies by destination country) |
| Free developer credit | No | Free test SMS on signup |
What's the differenceLINK Mobility and SMSAPI are closely matched on pricing & credits — no material differences in the tracked fields.
Reach & Reliability
Global coverage and delivery dependability.
| Field | LINK Mobility | SMSAPI |
|---|---|---|
| Countries covered | 0 | 0 |
| Direct operator connections | Yes | No |
| Published uptime SLA | No published SLA | No published SLA |
What's the differenceLINK Mobility offers Direct operator connections, while SMSAPI does not.
Company & Trust
Independent reviews and company profile.
| Field | LINK Mobility | SMSAPI |
|---|---|---|
| G2 rating | 0.0 | 0.0 |
| G2 reviews | 0 | 0 |
| Ownership | public | public |
| Employees | 500-1,000 | 51-200 |
What's the differenceLINK Mobility and SMSAPI are closely matched on company & trust — no material differences in the tracked fields.
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