Comparison
Overview
Company snapshot and where each provider is based.
| Field | Smstools | Telnyx |
|---|---|---|
| What it is | 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. | Telnyx is a licensed telecom carrier offering a CPaaS platform with APIs for SMS, MMS, RCS, WhatsApp, voice, and email over its own private global IP network. |
| Founded | 2004 | 2009 |
| Ownership | private | private |
| Employees | 1-10 | 201-500 |
| HQ city | Dilsen-Stokkem | Chicago |
| HQ country | Belgium (EU) | USA |
What's the differenceTelnyx edges ahead on the overall messaging.dev Score (78 vs 56). Smstools is private and headquartered in Dilsen-Stokkem, Belgium (EU); Telnyx is private and based in Chicago, USA.
Channels
Which messaging channels each provider can send and receive on.
| Field | Smstools | Telnyx |
|---|---|---|
| SMS | Yes | Yes |
| MMS | No | Yes |
| RCS | No | Yes |
| Yes | Yes | |
| Viber | No | No |
| Facebook Messenger | No | No |
| Telegram | No | No |
| Apple Messages for Business | No | No |
| Voice | Yes | Yes |
| No | Yes |
What's the differenceThey share 3 channels. Telnyx additionally offers MMS, RCS, Email.
Developer Experience
How quickly a developer can sign up and send a first message.
| Field | Smstools | Telnyx |
|---|---|---|
| Self-service onboarding | Yes | Yes |
| Free developer credit | Free test credit on sign-up | No |
| Docs quality | high | high |
| Documentation | Open ↗ | Open ↗ |
| SDKs | PHP, Node.js, Python, Ruby, PowerShell | Node.js, Python, Ruby, Go, Java, .NET, PHP |
| Sandbox / test env | Yes | No |
| API types | REST, SMTP | REST, SMPP |
What's the differenceOn SDKs, Smstools adds PowerShell; Telnyx adds Go, Java, .NET; Smstools offers Sandbox / test env, while Telnyx does not; on API types, Smstools adds SMTP; Telnyx adds SMPP.
Data & Compliance
Data residency options and enterprise compliance certifications.
| Field | Smstools | Telnyx |
|---|---|---|
| EU data residency | Yes | Yes |
| US data residency | No | Yes |
| Choose region | No | Yes |
| GDPR | Yes | Yes |
| ISO 27001 | No | Yes |
| SOC 2 | No | Yes |
| HIPAA | No | Yes |
What's the differenceTelnyx offers US data residency, while Smstools does not; Telnyx offers Choose region, while Smstools does not; Telnyx offers ISO 27001, while Smstools does not; Telnyx offers SOC 2, while Smstools does not; Telnyx offers HIPAA, while Smstools does not.
Data Retention
How long message content and metadata are stored, and whether that is configurable.
| Field | Smstools | Telnyx |
|---|---|---|
| Retention policy | 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. | Telnyx follows a "Privacy by Design", minimal data-retention approach with customer-controlled retention policies, so message content and metadata retention can be configured by the customer. Its security-practices documentation states security logs are retained for 90 days; specific default retention periods for message content are not publicly documented in detail. |
What's the differenceSmstools: 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. Telnyx: Telnyx follows a "Privacy by Design", minimal data-retention approach with customer-controlled retention policies, so message content and metadata retention can be configured by the customer. Its security-practices documentation states security logs are retained for 90 days; specific default retention periods for message content are not publicly documented in detail.
Pricing & Credits
Pricing model and the cost of a first message.
| Field | Smstools | Telnyx |
|---|---|---|
| Pricing model | Pay-as-you-go per message with volume discounts; no subscription, setup fee or monthly minimum, with a personalised rate sheet issued on registration. | Pay-as-you-go per message billed per message part, with volume discounts and custom contracts for high-volume customers. |
| SMS starting price | From €0.025 per SMS to the USA (rates vary by destination country and volume) | $0.004 per outbound SMS message part (US, plus carrier fees) |
| Free developer credit | Free test credit on sign-up | No |
What's the differenceSmstools and Telnyx are closely matched on pricing & credits — no material differences in the tracked fields.
Reach & Reliability
Global coverage and delivery dependability.
| Field | Smstools | Telnyx |
|---|---|---|
| Countries covered | 200 | 130 |
| Direct operator connections | Yes | Yes |
| Published uptime SLA | 99.99% (uptime SLA) | 99.99% (SLA) |
What's the differenceSmstools leads on Countries covered (200 vs 130 for Telnyx).
Company & Trust
Independent reviews and company profile.
| Field | Smstools | Telnyx |
|---|---|---|
| G2 rating | 0.0 | 4.7 |
| G2 reviews | 0 | 525 |
| Ownership | private | private |
| Employees | 1-10 | 201-500 |
What's the differenceTelnyx leads on G2 rating (4.7 vs 0 for Smstools); Telnyx leads on G2 reviews (525 vs 0 for Smstools).
Still deciding? Read the quickstart guides:
Already on one of them? Follow a migration guide: