Comparison

Overview

Company snapshot and where each provider is based.

FieldAttentiveTelnyx
What it isAI-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.Telnyx is a licensed telecom carrier offering a CPaaS platform with APIs for SMS, MMS, RCS, WhatsApp, voice, and email over its own private global IP network.
Founded20162009
Ownershipprivateprivate
Employees1,000-1,500201-500
HQ cityNew YorkChicago
HQ countryUSAUSA
What's the differenceTelnyx edges ahead on the overall messaging.dev Score (78 vs 40). Attentive is private and headquartered in New York, USA; Telnyx is private and based in Chicago, USA.

Channels

Which messaging channels each provider can send and receive on.

FieldAttentiveTelnyx
SMSYesYes
MMSYesYes
RCSYesYes
WhatsAppNoYes
ViberNoNo
Facebook MessengerNoNo
TelegramNoNo
Apple Messages for BusinessNoNo
VoiceNoYes
EmailYesYes
What's the differenceThey share 4 channels. Telnyx additionally offers WhatsApp, Voice.

Developer Experience

How quickly a developer can sign up and send a first message.

FieldAttentiveTelnyx
Self-service onboardingNoYes
Free developer creditNoNo
Docs qualitymedhigh
DocumentationOpen ↗Open ↗
SDKsiOS (Swift), Android (Kotlin), React NativeNode.js, Python, Ruby, Go, Java, .NET, PHP
Sandbox / test envYesNo
API typesREST, GraphQLREST, SMPP
What's the differenceTelnyx offers Self-service onboarding, while Attentive does not; on SDKs, Attentive adds iOS (Swift), Android (Kotlin), React Native; Telnyx adds Node.js, Python, Ruby, Go, Java, .NET, PHP; Attentive offers Sandbox / test env, while Telnyx does not; on API types, Attentive adds GraphQL; Telnyx adds SMPP.

Data & Compliance

Data residency options and enterprise compliance certifications.

FieldAttentiveTelnyx
EU data residencyNoYes
US data residencyYesYes
Choose regionNoYes
GDPRYesYes
ISO 27001NoYes
SOC 2YesYes
HIPAANoYes
What's the differenceTelnyx offers EU data residency, while Attentive does not; Telnyx offers Choose region, while Attentive does not; Telnyx offers ISO 27001, while Attentive does not; Telnyx offers HIPAA, while Attentive does not.

Data Retention

How long message content and metadata are stored, and whether that is configurable.

FieldAttentiveTelnyx
Retention policyNo 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.Telnyx follows a "Privacy by Design", minimal data-retention approach with customer-controlled retention policies, so message content and metadata retention can be configured by the customer. Its security-practices documentation states security logs are retained for 90 days; specific default retention periods for message content are not publicly documented in detail.
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. Telnyx: Telnyx follows a "Privacy by Design", minimal data-retention approach with customer-controlled retention policies, so message content and metadata retention can be configured by the customer. Its security-practices documentation states security logs are retained for 90 days; specific default retention periods for message content are not publicly documented in detail.

Pricing & Credits

Pricing model and the cost of a first message.

FieldAttentiveTelnyx
Pricing modelCustom-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 message billed per message part, with volume discounts and custom contracts for high-volume customers.
SMS starting priceNot published$0.004 per outbound SMS message part (US, plus carrier fees)
Free developer creditNoNo
What's the differenceAttentive and Telnyx are closely matched on pricing & credits — no material differences in the tracked fields.

Reach & Reliability

Global coverage and delivery dependability.

FieldAttentiveTelnyx
Countries covered20130
Direct operator connectionsNoYes
Published uptime SLANo published SLA99.99% (SLA)
What's the differenceTelnyx leads on Countries covered (130 vs 20 for Attentive); Telnyx offers Direct operator connections, while Attentive does not.

Company & Trust

Independent reviews and company profile.

FieldAttentiveTelnyx
G2 rating4.54.7
G2 reviews1,483525
Ownershipprivateprivate
Employees1,000-1,500201-500
What's the differenceTelnyx leads on G2 rating (4.7 vs 4.5 for Attentive); Attentive leads on G2 reviews (1,483 vs 525 for Telnyx).

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