Comparison
Overview
Company snapshot and where each provider is based.
| Field | Attentive | Prelude |
|---|---|---|
| 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. | 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 | 2016 | 2022 |
| Ownership | private | private |
| Employees | 1,000-1,500 | 51-200 |
| HQ city | New York | Paris |
| HQ country | USA | France (EU) |
What's the differencePrelude edges ahead on the overall messaging.dev Score (62 vs 40). Attentive is private and headquartered in New York, USA; Prelude is private and based in Paris, France (EU).
Channels
Which messaging channels each provider can send and receive on.
| Field | Attentive | Prelude |
|---|---|---|
| SMS | Yes | Yes |
| MMS | Yes | No |
| RCS | Yes | Yes |
| No | Yes | |
| Viber | No | Yes |
| Facebook Messenger | No | No |
| Telegram | No | Yes |
| Apple Messages for Business | No | No |
| Voice | No | Yes |
| Yes | Yes |
What's the differenceThey share 3 channels. Attentive additionally offers MMS, while Prelude additionally offers WhatsApp, Viber, Telegram, Voice.
Developer Experience
How quickly a developer can sign up and send a first message.
| Field | Attentive | Prelude |
|---|---|---|
| Self-service onboarding | No | Yes |
| Free developer credit | No | No |
| Docs quality | med | high |
| Documentation | Open ↗ | Open ↗ |
| SDKs | iOS (Swift), Android (Kotlin), React Native | Node.js, Python, Go, Java, Ruby, PHP, C# |
| Sandbox / test env | Yes | No |
| API types | REST, GraphQL | REST |
What's the differencePrelude offers Self-service onboarding, while Attentive does not; on SDKs, Attentive adds iOS (Swift), Android (Kotlin), React Native; Prelude adds Node.js, Python, Go, Java, Ruby, PHP, C#; Attentive offers Sandbox / test env, while Prelude does not; on API types, Attentive adds GraphQL.
Data & Compliance
Data residency options and enterprise compliance certifications.
| Field | Attentive | Prelude |
|---|---|---|
| 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 differencePrelude offers EU data residency, while Attentive does not; Attentive offers US data residency, while Prelude does not; Prelude offers ISO 27001, while Attentive does not.
Data Retention
How long message content and metadata are stored, and whether that is configurable.
| Field | Attentive | Prelude |
|---|---|---|
| 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. 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 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. 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 | Attentive | Prelude |
|---|---|---|
| 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. | 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 | Not published | €0.0043 per SMS (US, at-cost); verification fee from €0.032 |
| Free developer credit | No | No |
What's the differenceAttentive and Prelude are closely matched on pricing & credits — no material differences in the tracked fields.
Reach & Reliability
Global coverage and delivery dependability.
| Field | Attentive | Prelude |
|---|---|---|
| Countries covered | 20 | 230 |
| Direct operator connections | No | Yes |
| Published uptime SLA | No published SLA | No published SLA |
What's the differencePrelude leads on Countries covered (230 vs 20 for Attentive); Prelude offers Direct operator connections, while Attentive does not.
Company & Trust
Independent reviews and company profile.
| Field | Attentive | Prelude |
|---|---|---|
| G2 rating | 4.5 | 4.9 |
| G2 reviews | 1,483 | 13 |
| Ownership | private | private |
| Employees | 1,000-1,500 | 51-200 |
What's the differencePrelude leads on G2 rating (4.9 vs 4.5 for Attentive); Attentive leads on G2 reviews (1,483 vs 13 for Prelude).
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