Comparison
Overview
Company snapshot and where each provider is based.
| Field | Attentive | Clickatell |
|---|---|---|
| What it is | AI-powered SMS, MMS, RCS, email, and push marketing platform for consumer brands, with REST and GraphQL APIs for subscriber management and event-triggered messaging rather than direct message sending. | Cloud messaging and chat-commerce platform offering SMS, WhatsApp, RCS and Apple Messages for Business APIs for businesses. |
| Founded | 2016 | 2000 |
| Ownership | private | private |
| Employees | 1,000-1,500 | 250-500 |
| HQ city | New York | Redwood City |
| HQ country | USA | USA |
What's the differenceClickatell edges ahead on the overall messaging.dev Score (61 vs 40). Attentive is private and headquartered in New York, USA; Clickatell is private and based in Redwood City, USA.
Channels
Which messaging channels each provider can send and receive on.
| Field | Attentive | Clickatell |
|---|---|---|
| SMS | Yes | Yes |
| MMS | Yes | No |
| RCS | Yes | Yes |
| No | Yes | |
| Viber | No | No |
| Facebook Messenger | No | No |
| Telegram | No | No |
| Apple Messages for Business | No | Yes |
| Voice | No | No |
| Yes | No |
What's the differenceThey share 2 channels. Attentive additionally offers MMS, Email, while Clickatell additionally offers WhatsApp, Apple Messages for Business.
Developer Experience
How quickly a developer can sign up and send a first message.
| Field | Attentive | Clickatell |
|---|---|---|
| Self-service onboarding | No | Yes |
| Free developer credit | No | No |
| Docs quality | med | high |
| Documentation | Open ↗ | Open ↗ |
| SDKs | iOS (Swift), Android (Kotlin), React Native | Python, PHP, Java, Node.js, C# |
| Sandbox / test env | Yes | Yes |
| API types | REST, GraphQL | REST, SMPP |
What's the differenceClickatell offers Self-service onboarding, while Attentive does not; on SDKs, Attentive adds iOS (Swift), Android (Kotlin), React Native; Clickatell adds Python, PHP, Java, Node.js, C#; on API types, Attentive adds GraphQL; Clickatell adds SMPP.
Data & Compliance
Data residency options and enterprise compliance certifications.
| Field | Attentive | Clickatell |
|---|---|---|
| EU data residency | No | Yes |
| US data residency | Yes | No |
| Choose region | No | No |
| GDPR | Yes | Yes |
| ISO 27001 | No | Yes |
| SOC 2 | Yes | Yes |
| HIPAA | No | No |
What's the differenceClickatell offers EU data residency, while Attentive does not; Attentive offers US data residency, while Clickatell does not; Clickatell offers ISO 27001, while Attentive does not.
Data Retention
How long message content and metadata are stored, and whether that is configurable.
| Field | Attentive | Clickatell |
|---|---|---|
| Retention policy | No fixed retention periods are published; the privacy policy states personal information is retained "for as long as necessary to provide our Service or as needed to comply with applicable legal obligations." EU/UK/Swiss consumer data is transferred to and processed in the United States under the EU-U.S., UK Extension, and Swiss-U.S. Data Privacy Frameworks. | 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. |
What's the differenceAttentive: No fixed retention periods are published; the privacy policy states personal information is retained "for as long as necessary to provide our Service or as needed to comply with applicable legal obligations." EU/UK/Swiss consumer data is transferred to and processed in the United States under the EU-U.S., UK Extension, and Swiss-U.S. Data Privacy Frameworks. Clickatell: 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.
Pricing & Credits
Pricing model and the cost of a first message.
| Field | Attentive | Clickatell |
|---|---|---|
| Pricing model | Custom-quoted, usage-based subscription priced on message volume, subscriber list size, channels, and premium AI add-ons; no self-serve signup or published per-message rates. | Self-service prepaid pay-as-you-go credits, with quote-based enterprise plans (Connect, Interact, Transact) requiring sales contact. |
| SMS starting price | Not published | $0.008 per SMS to the USA (published rate) |
| Free developer credit | No | No |
What's the differenceAttentive and Clickatell are closely matched on pricing & credits — no material differences in the tracked fields.
Reach & Reliability
Global coverage and delivery dependability.
| Field | Attentive | Clickatell |
|---|---|---|
| Countries covered | 20 | 190 |
| Direct operator connections | No | Yes |
| Published uptime SLA | No published SLA | 99.90%–99.98% uptime (SLA, varies by plan) |
What's the differenceClickatell leads on Countries covered (190 vs 20 for Attentive); Clickatell offers Direct operator connections, while Attentive does not.
Company & Trust
Independent reviews and company profile.
| Field | Attentive | Clickatell |
|---|---|---|
| G2 rating | 4.5 | 4.3 |
| G2 reviews | 1,483 | 2 |
| Ownership | private | private |
| Employees | 1,000-1,500 | 250-500 |
What's the differenceAttentive leads on G2 rating (4.5 vs 4.3 for Clickatell); Attentive leads on G2 reviews (1,483 vs 2 for Clickatell).
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