Comparison
Overview
Company snapshot and where each provider is based.
| Field | Attentive | SmsManager |
|---|---|---|
| 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. | Czech bulk-messaging platform for sending SMS, WhatsApp, Viber and RCS messages from a web application or a single JSON API, with direct connections to local mobile operators. |
| Founded | 2016 | 2011 |
| Ownership | private | private |
| Employees | 1,000-1,500 | 1-5 |
| HQ city | New York | Prague |
| HQ country | USA | Czech Republic (EU) |
What's the differenceSmsManager edges ahead on the overall messaging.dev Score (51 vs 40). Attentive is private and headquartered in New York, USA; SmsManager is private and based in Prague, Czech Republic (EU).
Channels
Which messaging channels each provider can send and receive on.
| Field | Attentive | SmsManager |
|---|---|---|
| SMS | Yes | Yes |
| MMS | Yes | No |
| RCS | Yes | Yes |
| No | Yes | |
| Viber | No | Yes |
| 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 SmsManager additionally offers WhatsApp, Viber, Apple Messages for Business.
Developer Experience
How quickly a developer can sign up and send a first message.
| Field | Attentive | SmsManager |
|---|---|---|
| Self-service onboarding | No | Yes |
| Free developer credit | No | Yes |
| Docs quality | med | high |
| Documentation | Open ↗ | Open ↗ |
| SDKs | iOS (Swift), Android (Kotlin), React Native | JavaScript/TypeScript, PHP |
| Sandbox / test env | Yes | Yes |
| API types | REST, GraphQL | REST |
What's the differenceSmsManager offers Self-service onboarding, while Attentive does not; on SDKs, Attentive adds iOS (Swift), Android (Kotlin), React Native; SmsManager adds JavaScript/TypeScript, PHP; on API types, Attentive adds GraphQL.
Data & Compliance
Data residency options and enterprise compliance certifications.
| Field | Attentive | SmsManager |
|---|---|---|
| EU data residency | No | Yes |
| US data residency | Yes | No |
| Choose region | No | No |
| GDPR | Yes | Yes |
| ISO 27001 | No | No |
| SOC 2 | Yes | No |
| HIPAA | No | No |
What's the differenceSmsManager offers EU data residency, while Attentive does not; Attentive offers US data residency, while SmsManager does not; Attentive offers SOC 2, while SmsManager does not.
Data Retention
How long message content and metadata are stored, and whether that is configurable.
| Field | Attentive | SmsManager |
|---|---|---|
| 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. | Under the published GDPR data processing agreement, message records (phone number and message text) older than 12 months are automatically deleted by default unless otherwise agreed; encrypted backups are kept 30 days and system logs 180 days. After contract termination, personal data is deleted or exported (CSV) free of charge within 30 days. |
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. SmsManager: Under the published GDPR data processing agreement, message records (phone number and message text) older than 12 months are automatically deleted by default unless otherwise agreed; encrypted backups are kept 30 days and system logs 180 days. After contract termination, personal data is deleted or exported (CSV) free of charge within 30 days.
Pricing & Credits
Pricing model and the cost of a first message.
| Field | Attentive | SmsManager |
|---|---|---|
| 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. | Prepaid credit pay-as-you-go: free account, non-expiring credit topped up by card or bank transfer, charged only per message sent, with volume-tiered discounts and optional subscription add-on services. |
| SMS starting price | Not published | €0.0356 per SMS to the Czech Republic (5,001-10,000 message volume tier; promotional rate €0.032), other destinations priced per country |
| Free developer credit | No | Yes |
What's the differenceAttentive and SmsManager are closely matched on pricing & credits — no material differences in the tracked fields.
Reach & Reliability
Global coverage and delivery dependability.
| Field | Attentive | SmsManager |
|---|---|---|
| Countries covered | 20 | 175 |
| Direct operator connections | No | Yes |
| Published uptime SLA | No published SLA | No published SLA (individual SLA agreements available) |
What's the differenceSmsManager leads on Countries covered (175 vs 20 for Attentive); SmsManager offers Direct operator connections, while Attentive does not.
Company & Trust
Independent reviews and company profile.
| Field | Attentive | SmsManager |
|---|---|---|
| G2 rating | 4.5 | 0.0 |
| G2 reviews | 1,483 | 0 |
| Ownership | private | private |
| Employees | 1,000-1,500 | 1-5 |
What's the differenceAttentive leads on G2 rating (4.5 vs 0 for SmsManager); Attentive leads on G2 reviews (1,483 vs 0 for SmsManager).
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