Comparison
Overview
Company snapshot and where each provider is based.
| Field | Clickatell | MessageFlow |
|---|---|---|
| What it is | Cloud messaging and chat-commerce platform offering SMS, WhatsApp, RCS and Apple Messages for Business APIs for businesses. | Cross-channel messaging platform by Polish CPaaS company Vercom S.A. (Warsaw Stock Exchange listed), providing email, SMS, RCS, mobile push, Viber and WhatsApp through a single REST API and campaign panel. |
| Founded | 2000 | 2005 |
| Ownership | private | public |
| Employees | 250-500 | 51-200 |
| HQ city | Redwood City | Poznań |
| HQ country | USA | Poland (EU) |
What's the differenceClickatell edges ahead on the overall messaging.dev Score (61 vs 59). Clickatell is private and headquartered in Redwood City, USA; MessageFlow is public and based in Poznań, Poland (EU).
Channels
Which messaging channels each provider can send and receive on.
| Field | Clickatell | MessageFlow |
|---|---|---|
| SMS | Yes | Yes |
| MMS | No | No |
| RCS | Yes | Yes |
| Yes | Yes | |
| Viber | No | Yes |
| Facebook Messenger | No | No |
| Telegram | No | No |
| Apple Messages for Business | Yes | No |
| Voice | No | No |
| No | Yes |
What's the differenceThey share 3 channels. Clickatell additionally offers Apple Messages for Business, while MessageFlow additionally offers Viber, Email.
Developer Experience
How quickly a developer can sign up and send a first message.
| Field | Clickatell | MessageFlow |
|---|---|---|
| Self-service onboarding | Yes | Yes |
| Free developer credit | No | 30-day trial: 100 SMS + 100 emails |
| Docs quality | high | med |
| Documentation | Open ↗ | Open ↗ |
| SDKs | Python, PHP, Java, Node.js, C# | — |
| Sandbox / test env | Yes | Yes |
| API types | REST, SMPP | REST, SMTP |
What's the differenceOn SDKs, Clickatell adds Python, PHP, Java, Node.js, C#; on API types, Clickatell adds SMPP; MessageFlow adds SMTP.
Data & Compliance
Data residency options and enterprise compliance certifications.
| Field | Clickatell | MessageFlow |
|---|---|---|
| EU data residency | Yes | Yes |
| US data residency | No | No |
| Choose region | No | No |
| GDPR | Yes | Yes |
| ISO 27001 | Yes | Yes |
| SOC 2 | Yes | Yes |
| HIPAA | No | No |
What's the differenceClickatell and MessageFlow are closely matched on data & compliance — no material differences in the tracked fields.
Data Retention
How long message content and metadata are stored, and whether that is configurable.
| Field | Clickatell | MessageFlow |
|---|---|---|
| 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 [email protected]; specific message content or metadata retention periods are not published. | All customer data is stated to be stored exclusively on servers within the EEA (Microsoft Azure, AWS). No overall retention period for message content is published; the API docs state sent SMS message data is kept and queryable for 60 days, and the privacy policy retains personal data for the duration of the service agreement plus statutory periods (e.g. accounting records). |
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 [email protected]; specific message content or metadata retention periods are not published. MessageFlow: All customer data is stated to be stored exclusively on servers within the EEA (Microsoft Azure, AWS). No overall retention period for message content is published; the API docs state sent SMS message data is kept and queryable for 60 days, and the privacy policy retains personal data for the duration of the service agreement plus statutory periods (e.g. accounting records).
Pricing & Credits
Pricing model and the cost of a first message.
| Field | Clickatell | MessageFlow |
|---|---|---|
| Pricing model | Self-service prepaid pay-as-you-go credits, with quote-based enterprise plans (Connect, Interact, Transact) requiring sales contact. | Monthly subscription tiers priced by contact count (Starter from €69/month) with bundled email/SMS volumes and per-unit overages, plus a customizable Mix & Match plan (from €465/month); SMS rates vary by destination country. |
| SMS starting price | $0.008 per SMS to the USA (published rate) | Not published (per-country SMS rates shown only in an in-panel calculator; e.g. Grow plan €109/month includes 1,000 SMS) |
| Free developer credit | No | 30-day trial: 100 SMS + 100 emails |
What's the differenceClickatell and MessageFlow are closely matched on pricing & credits — no material differences in the tracked fields.
Reach & Reliability
Global coverage and delivery dependability.
| Field | Clickatell | MessageFlow |
|---|---|---|
| Countries covered | 190 | 190 |
| Direct operator connections | Yes | Yes |
| Published uptime SLA | 99.90%–99.98% uptime (SLA, varies by plan) | No published SLA (custom SLA available on Enterprise plans) |
What's the differenceClickatell and MessageFlow are closely matched on reach & reliability — no material differences in the tracked fields.
Company & Trust
Independent reviews and company profile.
| Field | Clickatell | MessageFlow |
|---|---|---|
| G2 rating | 4.3 | 4.9 |
| G2 reviews | 2 | 11 |
| Ownership | private | public |
| Employees | 250-500 | 51-200 |
What's the differenceMessageFlow leads on G2 rating (4.9 vs 4.3 for Clickatell); MessageFlow leads on G2 reviews (11 vs 2 for Clickatell).
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