Comparison
Overview
Company snapshot and where each provider is based.
| Field | Mitto | Smstools |
|---|---|---|
| What it is | Swiss omnichannel CPaaS provider offering SMS, RCS, WhatsApp, Viber, Telegram, Facebook Messenger and voice messaging APIs for business communications. | 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 | 2013 | 2004 |
| Ownership | private | private |
| Employees | 100-250 | 1-10 |
| HQ city | Zug | Dilsen-Stokkem |
| HQ country | Switzerland | Belgium (EU) |
What's the differenceSmstools edges ahead on the overall messaging.dev Score (56 vs 48). Mitto is private and headquartered in Zug, Switzerland; Smstools is private and based in Dilsen-Stokkem, Belgium (EU).
Channels
Which messaging channels each provider can send and receive on.
| Field | Mitto | Smstools |
|---|---|---|
| SMS | Yes | Yes |
| MMS | No | No |
| RCS | Yes | No |
| Yes | Yes | |
| Viber | Yes | No |
| Facebook Messenger | Yes | No |
| Telegram | Yes | No |
| Apple Messages for Business | No | No |
| Voice | Yes | Yes |
| No | No |
What's the differenceThey share 3 channels. Mitto additionally offers RCS, Viber, Facebook Messenger, Telegram.
Developer Experience
How quickly a developer can sign up and send a first message.
| Field | Mitto | Smstools |
|---|---|---|
| Self-service onboarding | Yes | Yes |
| Free developer credit | No | Free test credit on sign-up |
| Docs quality | med | high |
| Documentation | Open ↗ | Open ↗ |
| SDKs | — | PHP, Node.js, Python, Ruby, PowerShell |
| Sandbox / test env | Yes | Yes |
| API types | REST, SMPP | REST, SMTP |
What's the differenceOn SDKs, Smstools adds PHP, Node.js, Python, Ruby, PowerShell; on API types, Mitto adds SMPP; Smstools adds SMTP.
Data & Compliance
Data residency options and enterprise compliance certifications.
| Field | Mitto | Smstools |
|---|---|---|
| EU data residency | No | 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 differenceSmstools offers EU data residency, while Mitto does not; Mitto offers ISO 27001, while Smstools does not.
Data Retention
How long message content and metadata are stored, and whether that is configurable.
| Field | Mitto | Smstools |
|---|---|---|
| Retention policy | Per-message retention of content (textRetention) and of the recipient number (toRetention) can be set per API request to Undefined, Retain, or Discard; no global retention duration is publicly documented. Per the privacy policy, account/registration data is kept until deletion is requested and contact-form data until the conversation ends. | 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 differenceMitto: Per-message retention of content (textRetention) and of the recipient number (toRetention) can be set per API request to Undefined, Retain, or Discard; no global retention duration is publicly documented. Per the privacy policy, account/registration data is kept until deletion is requested and contact-form data until the conversation ends. 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 | Mitto | Smstools |
|---|---|---|
| Pricing model | Pay-as-you-go — pay only for what you use with no contracts, plus volume discounts and custom plans via sales. | 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 | Not published | From €0.025 per SMS to the USA (rates vary by destination country and volume) |
| Free developer credit | No | Free test credit on sign-up |
What's the differenceMitto and Smstools are closely matched on pricing & credits — no material differences in the tracked fields.
Reach & Reliability
Global coverage and delivery dependability.
| Field | Mitto | Smstools |
|---|---|---|
| Countries covered | 230 | 200 |
| Direct operator connections | Yes | Yes |
| Published uptime SLA | No published SLA | 99.99% (uptime SLA) |
What's the differenceMitto leads on Countries covered (230 vs 200 for Smstools).
Company & Trust
Independent reviews and company profile.
| Field | Mitto | Smstools |
|---|---|---|
| G2 rating | 4.0 | 0.0 |
| G2 reviews | 2 | 0 |
| Ownership | private | private |
| Employees | 100-250 | 1-10 |
What's the differenceMitto leads on G2 rating (4 vs 0 for Smstools); Mitto leads on G2 reviews (2 vs 0 for Smstools).
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