Comparison
Overview
Company snapshot and where each provider is based.
| Field | SMSAPI | Smstools |
|---|---|---|
| What it is | 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. | Belgian business-messaging platform by Xtreme Internet Solutions offering an SMS gateway API, bulk SMS marketing software, WhatsApp Business API, voice messages and email-to-SMS with EU-only hosting. |
| Founded | 2007 | 2004 |
| Ownership | public | private |
| Employees | 51-200 | 1-10 |
| HQ city | Gliwice | Dilsen-Stokkem |
| HQ country | Poland (EU) | Belgium (EU) |
What's the differenceSmstools edges ahead on the overall messaging.dev Score (56 vs 44). SMSAPI is public and headquartered in Gliwice, Poland (EU); Smstools is private and based in Dilsen-Stokkem, Belgium (EU).
Channels
Which messaging channels each provider can send and receive on.
| Field | SMSAPI | Smstools |
|---|---|---|
| SMS | Yes | Yes |
| MMS | Yes | No |
| RCS | Yes | No |
| Yes | Yes | |
| Viber | No | No |
| Facebook Messenger | No | No |
| Telegram | No | No |
| Apple Messages for Business | No | No |
| Voice | Yes | Yes |
| No | No |
What's the differenceThey share 3 channels. SMSAPI additionally offers MMS, RCS.
Developer Experience
How quickly a developer can sign up and send a first message.
| Field | SMSAPI | Smstools |
|---|---|---|
| Self-service onboarding | Yes | Yes |
| Free developer credit | Free test SMS on signup | Free test credit on sign-up |
| Docs quality | high | high |
| Documentation | Open ↗ | Open ↗ |
| SDKs | PHP, Python, JavaScript, Java, C#, Go, Bash | PHP, Node.js, Python, Ruby, PowerShell |
| Sandbox / test env | Yes | Yes |
| API types | REST, SMTP | REST, SMTP |
What's the differenceOn SDKs, SMSAPI adds JavaScript, Java, C#, Go, Bash; Smstools adds Node.js, Ruby, PowerShell.
Data & Compliance
Data residency options and enterprise compliance certifications.
| Field | SMSAPI | Smstools |
|---|---|---|
| EU data residency | Yes | Yes |
| US data residency | No | No |
| Choose region | No | No |
| GDPR | Yes | Yes |
| ISO 27001 | Yes | No |
| SOC 2 | No | No |
| HIPAA | No | No |
What's the differenceSMSAPI offers ISO 27001, while Smstools does not.
Data Retention
How long message content and metadata are stored, and whether that is configurable.
| Field | SMSAPI | Smstools |
|---|---|---|
| Retention policy | 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). | Not publicly documented in detail. Smstools states all data is stored on servers located in Europe under GDPR-compliant processes, with AES-256 encryption at rest and TLS 1.3 in transit, and a Data Processing Agreement is available on request, but no specific message content/metadata retention periods are published. |
What's the differenceSMSAPI: 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). Smstools: Not publicly documented in detail. Smstools states all data is stored on servers located in Europe under GDPR-compliant processes, with AES-256 encryption at rest and TLS 1.3 in transit, and a Data Processing Agreement is available on request, but no specific message content/metadata retention periods are published.
Pricing & Credits
Pricing model and the cost of a first message.
| Field | SMSAPI | Smstools |
|---|---|---|
| Pricing model | Pay-as-you-go prepaid credit — pay only for sent messages with no setup fee or contract; minimum top-up around €30. | Pay-as-you-go per message with volume discounts; no subscription, setup fee or monthly minimum, with a personalised rate sheet issued on registration. |
| SMS starting price | From ~€0.04 per SMS (international, varies by destination country) | From €0.025 per SMS to the USA (rates vary by destination country and volume) |
| Free developer credit | Free test SMS on signup | Free test credit on sign-up |
What's the differenceSMSAPI and Smstools are closely matched on pricing & credits — no material differences in the tracked fields.
Reach & Reliability
Global coverage and delivery dependability.
| Field | SMSAPI | Smstools |
|---|---|---|
| Countries covered | 0 | 200 |
| Direct operator connections | No | Yes |
| Published uptime SLA | No published SLA | 99.99% (uptime SLA) |
What's the differenceSmstools leads on Countries covered (200 vs 0 for SMSAPI); Smstools offers Direct operator connections, while SMSAPI does not.
Company & Trust
Independent reviews and company profile.
| Field | SMSAPI | Smstools |
|---|---|---|
| G2 rating | 0.0 | 0.0 |
| G2 reviews | 0 | 0 |
| Ownership | public | private |
| Employees | 51-200 | 1-10 |
What's the differenceSMSAPI and Smstools are closely matched on company & trust — no material differences in the tracked fields.
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