Comparison
Overview
Company snapshot and where each provider is based.
| Field | seven.io | Smstools |
|---|---|---|
| What it is | German CPaaS platform (formerly sms77) providing SMS, RCS, WhatsApp and voice APIs with data processed on German-hosted infrastructure. | 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 | 2003 | 2004 |
| Ownership | private | private |
| Employees | 2-10 | 1-10 |
| HQ city | Kiel | Dilsen-Stokkem |
| HQ country | Germany (EU) | Belgium (EU) |
What's the differenceSmstools edges ahead on the overall messaging.dev Score (56 vs 42). seven.io is private and headquartered in Kiel, Germany (EU); Smstools is private and based in Dilsen-Stokkem, Belgium (EU).
Channels
Which messaging channels each provider can send and receive on.
| Field | seven.io | Smstools |
|---|---|---|
| SMS | Yes | Yes |
| MMS | No | 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. seven.io additionally offers RCS.
Developer Experience
How quickly a developer can sign up and send a first message.
| Field | seven.io | Smstools |
|---|---|---|
| Self-service onboarding | Yes | Yes |
| Free developer credit | €0.50 free test credit | Free test credit on sign-up |
| Docs quality | high | high |
| Documentation | Open ↗ | Open ↗ |
| SDKs | PHP, JavaScript, Python, Go, Ruby, .NET, Rust, Kotlin, Elixir, Swift | PHP, Node.js, Python, Ruby, PowerShell |
| Sandbox / test env | Yes | Yes |
| API types | REST, SMPP, SMTP | REST, SMTP |
What's the differenceOn SDKs, seven.io adds JavaScript, Go, .NET, Rust, Kotlin, Elixir, Swift; Smstools adds Node.js, PowerShell; on API types, seven.io adds SMPP.
Data & Compliance
Data residency options and enterprise compliance certifications.
| Field | seven.io | 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 differenceSeven.io offers ISO 27001, while Smstools does not.
Data Retention
How long message content and metadata are stored, and whether that is configurable.
| Field | seven.io | Smstools |
|---|---|---|
| Retention policy | Log files are stored only for the legally required period and subsequently anonymized, following a stated data-minimization principle; exact message-content retention periods are not publicly documented in detail. Processing runs on German/EU infrastructure ("Pure EU Routing") in ISO 27001-certified data centers, with an online-signable DPA available. | 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 differenceseven.io: Log files are stored only for the legally required period and subsequently anonymized, following a stated data-minimization principle; exact message-content retention periods are not publicly documented in detail. Processing runs on German/EU infrastructure ("Pure EU Routing") in ISO 27001-certified data centers, with an online-signable DPA available. 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 | seven.io | Smstools |
|---|---|---|
| Pricing model | Prepaid pay-as-you-go: top up account balance and pay per message sent, with no monthly fee or subscription required for API access. | 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 | €0.075 per SMS (base rate incl. Germany and most EU countries); non-EU rates vary by country | From €0.025 per SMS to the USA (rates vary by destination country and volume) |
| Free developer credit | €0.50 free test credit | Free test credit on sign-up |
What's the differenceseven.io and Smstools are closely matched on pricing & credits — no material differences in the tracked fields.
Reach & Reliability
Global coverage and delivery dependability.
| Field | seven.io | 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 seven.io); Smstools offers Direct operator connections, while seven.io does not.
Company & Trust
Independent reviews and company profile.
| Field | seven.io | Smstools |
|---|---|---|
| G2 rating | 0.0 | 0.0 |
| G2 reviews | 0 | 0 |
| Ownership | private | private |
| Employees | 2-10 | 1-10 |
What's the differenceseven.io and Smstools are closely matched on company & trust — no material differences in the tracked fields.
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