Comparison
Overview
Company snapshot and where each provider is based.
| Field | Clickatell | SMSAPI |
|---|---|---|
| What it is | Cloud messaging and chat-commerce platform offering SMS, WhatsApp, RCS and Apple Messages for Business APIs for businesses. | 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 | 2000 | 2007 |
| Ownership | private | public |
| Employees | 250-500 | 51-200 |
| HQ city | Redwood City | Gliwice |
| HQ country | USA | Poland (EU) |
What's the differenceClickatell edges ahead on the overall messaging.dev Score (61 vs 44). Clickatell is private and headquartered in Redwood City, USA; SMSAPI is public and based in Gliwice, Poland (EU).
Channels
Which messaging channels each provider can send and receive on.
| Field | Clickatell | SMSAPI |
|---|---|---|
| SMS | Yes | Yes |
| MMS | No | Yes |
| RCS | Yes | Yes |
| Yes | Yes | |
| Viber | No | No |
| Facebook Messenger | No | No |
| Telegram | No | No |
| Apple Messages for Business | Yes | No |
| Voice | No | Yes |
| No | No |
What's the differenceThey share 3 channels. Clickatell additionally offers Apple Messages for Business, while SMSAPI additionally offers MMS, Voice.
Developer Experience
How quickly a developer can sign up and send a first message.
| Field | Clickatell | SMSAPI |
|---|---|---|
| Self-service onboarding | Yes | Yes |
| Free developer credit | No | Free test SMS on signup |
| Docs quality | high | high |
| Documentation | Open ↗ | Open ↗ |
| SDKs | Python, PHP, Java, Node.js, C# | PHP, Python, JavaScript, Java, C#, Go, Bash |
| Sandbox / test env | Yes | Yes |
| API types | REST, SMPP | REST, SMTP |
What's the differenceOn SDKs, Clickatell adds Node.js; SMSAPI adds JavaScript, Go, Bash; on API types, Clickatell adds SMPP; SMSAPI adds SMTP.
Data & Compliance
Data residency options and enterprise compliance certifications.
| Field | Clickatell | SMSAPI |
|---|---|---|
| EU data residency | Yes | Yes |
| US data residency | No | No |
| Choose region | No | No |
| GDPR | Yes | Yes |
| ISO 27001 | Yes | Yes |
| SOC 2 | Yes | No |
| HIPAA | No | No |
What's the differenceClickatell offers SOC 2, while SMSAPI does not.
Data Retention
How long message content and metadata are stored, and whether that is configurable.
| Field | Clickatell | SMSAPI |
|---|---|---|
| Retention policy | Not publicly documented in detail. Clickatell states it moved its data infrastructure to Amazon Web Services (AWS) in Ireland (EU) in 2018 and directs GDPR/data-protection queries to dataprotection@clickatell.com; specific message content or metadata retention periods are not published. | 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 differenceClickatell: Not publicly documented in detail. Clickatell states it moved its data infrastructure to Amazon Web Services (AWS) in Ireland (EU) in 2018 and directs GDPR/data-protection queries to dataprotection@clickatell.com; specific message content or metadata retention periods are not published. 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 | Clickatell | SMSAPI |
|---|---|---|
| Pricing model | Self-service prepaid pay-as-you-go credits, with quote-based enterprise plans (Connect, Interact, Transact) requiring sales contact. | 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 | $0.008 per SMS to the USA (published rate) | From ~€0.04 per SMS (international, varies by destination country) |
| Free developer credit | No | Free test SMS on signup |
What's the differenceClickatell and SMSAPI are closely matched on pricing & credits — no material differences in the tracked fields.
Reach & Reliability
Global coverage and delivery dependability.
| Field | Clickatell | SMSAPI |
|---|---|---|
| Countries covered | 190 | 0 |
| Direct operator connections | Yes | No |
| Published uptime SLA | 99.90%–99.98% uptime (SLA, varies by plan) | No published SLA |
What's the differenceClickatell leads on Countries covered (190 vs 0 for SMSAPI); Clickatell offers Direct operator connections, while SMSAPI does not.
Company & Trust
Independent reviews and company profile.
| Field | Clickatell | SMSAPI |
|---|---|---|
| G2 rating | 4.3 | 0.0 |
| G2 reviews | 2 | 0 |
| Ownership | private | public |
| Employees | 250-500 | 51-200 |
What's the differenceClickatell leads on G2 rating (4.3 vs 0 for SMSAPI); Clickatell leads on G2 reviews (2 vs 0 for SMSAPI).
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