Comparison
Overview
Company snapshot and where each provider is based.
| Field | Clickatell | Prelude |
|---|---|---|
| What it is | Cloud messaging and chat-commerce platform offering SMS, WhatsApp, RCS and Apple Messages for Business APIs for businesses. | Developer platform for phone and email verification (OTP), authentication, number intelligence, and anti-fraud onboarding delivered across SMS, RCS, WhatsApp, voice and other channels. |
| Founded | 2000 | 2022 |
| Ownership | private | private |
| Employees | 250-500 | 51-200 |
| HQ city | Redwood City | Paris |
| HQ country | USA | France (EU) |
What's the differencePrelude edges ahead on the overall messaging.dev Score (62 vs 61). Clickatell is private and headquartered in Redwood City, USA; Prelude is private and based in Paris, France (EU).
Channels
Which messaging channels each provider can send and receive on.
| Field | Clickatell | Prelude |
|---|---|---|
| SMS | Yes | Yes |
| MMS | No | No |
| RCS | Yes | Yes |
| Yes | Yes | |
| Viber | No | Yes |
| Facebook Messenger | No | No |
| Telegram | No | Yes |
| Apple Messages for Business | Yes | No |
| Voice | No | Yes |
| No | Yes |
What's the differenceThey share 3 channels. Clickatell additionally offers Apple Messages for Business, while Prelude additionally offers Viber, Telegram, Voice, Email.
Developer Experience
How quickly a developer can sign up and send a first message.
| Field | Clickatell | Prelude |
|---|---|---|
| Self-service onboarding | Yes | Yes |
| Free developer credit | No | No |
| Docs quality | high | high |
| Documentation | Open ↗ | Open ↗ |
| SDKs | Python, PHP, Java, Node.js, C# | Node.js, Python, Go, Java, Ruby, PHP, C# |
| Sandbox / test env | Yes | No |
| API types | REST, SMPP | REST |
What's the differenceOn SDKs, Prelude adds Go, Ruby; Clickatell offers Sandbox / test env, while Prelude does not; on API types, Clickatell adds SMPP.
Data & Compliance
Data residency options and enterprise compliance certifications.
| Field | Clickatell | Prelude |
|---|---|---|
| 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 Prelude 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 | Prelude |
|---|---|---|
| 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. | Not publicly documented in detail. Prelude is a European (Paris-based) company that hosts and processes data in EU data centers under GDPR, with SOC 2 Type 2 and ISO 27001:2022 controls including encryption of data in transit and at rest. It states that only essential data is stored for delivery tracking, but specific message-content and metadata retention periods are not published on the site or trust center. |
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. Prelude: Not publicly documented in detail. Prelude is a European (Paris-based) company that hosts and processes data in EU data centers under GDPR, with SOC 2 Type 2 and ISO 27001:2022 controls including encryption of data in transit and at rest. It states that only essential data is stored for delivery tracking, but specific message-content and metadata retention periods are not published on the site or trust center.
Pricing & Credits
Pricing model and the cost of a first message.
| Field | Clickatell | Prelude |
|---|---|---|
| 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 per-verification pricing plus at-cost (zero-markup) per-message charges, with optional Startup subscription and custom Enterprise tiers. |
| SMS starting price | $0.008 per SMS to the USA (published rate) | €0.0043 per SMS (US, at-cost); verification fee from €0.032 |
| Free developer credit | No | No |
What's the differenceClickatell and Prelude are closely matched on pricing & credits — no material differences in the tracked fields.
Reach & Reliability
Global coverage and delivery dependability.
| Field | Clickatell | Prelude |
|---|---|---|
| Countries covered | 190 | 230 |
| Direct operator connections | Yes | Yes |
| Published uptime SLA | 99.90%–99.98% uptime (SLA, varies by plan) | No published SLA |
What's the differencePrelude leads on Countries covered (230 vs 190 for Clickatell).
Company & Trust
Independent reviews and company profile.
| Field | Clickatell | Prelude |
|---|---|---|
| G2 rating | 4.3 | 4.9 |
| G2 reviews | 2 | 13 |
| Ownership | private | private |
| Employees | 250-500 | 51-200 |
What's the differencePrelude leads on G2 rating (4.9 vs 4.3 for Clickatell); Prelude leads on G2 reviews (13 vs 2 for Clickatell).
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