Comparison
Overview
Company snapshot and where each provider is based.
| Field | Sinch | Telesign |
|---|---|---|
| What it is | Cloud communications platform for messaging, voice, and email APIs | Digital identity and programmable communications platform offering SMS, RCS, voice, WhatsApp, Viber and email APIs alongside phone verification and fraud-prevention services. |
| Founded | 2008 | 2005 |
| Ownership | public | private |
| Employees | 3,000-5,000 | 500-1,000 |
| HQ city | Stockholm | Marina del Rey |
| HQ country | Sweden (EU) | USA |
What's the differenceSinch edges ahead on the overall messaging.dev Score (92 vs 70). Sinch is public and headquartered in Stockholm, Sweden (EU); Telesign is private and based in Marina del Rey, USA.
Channels
Which messaging channels each provider can send and receive on.
| Field | Sinch | Telesign |
|---|---|---|
| SMS | Yes | Yes |
| MMS | Yes | No |
| RCS | Yes | Yes |
| Yes | Yes | |
| Viber | Yes | Yes |
| Facebook Messenger | Yes | No |
| Telegram | Yes | No |
| Apple Messages for Business | Yes | No |
| Voice | Yes | Yes |
| Yes | Yes |
What's the differenceThey share 6 channels. Sinch additionally offers MMS, Facebook Messenger, Telegram, Apple Messages for Business.
Developer Experience
How quickly a developer can sign up and send a first message.
| Field | Sinch | Telesign |
|---|---|---|
| Self-service onboarding | Yes | Yes |
| Free developer credit | Yes | Yes |
| Docs quality | high | high |
| Documentation | Open ↗ | Open ↗ |
| SDKs | Java, Python, C#, Node.js, PHP | C#, Java, Node.js, PHP, Python, Ruby |
| Sandbox / test env | Yes | No |
| API types | REST, SMTP, SMPP | REST |
What's the differenceOn SDKs, Telesign adds Ruby; Sinch offers Sandbox / test env, while Telesign does not; on API types, Sinch adds SMTP, SMPP.
Data & Compliance
Data residency options and enterprise compliance certifications.
| Field | Sinch | Telesign |
|---|---|---|
| EU data residency | Yes | Yes |
| US data residency | Yes | Yes |
| Choose region | Yes | No |
| GDPR | Yes | Yes |
| ISO 27001 | Yes | Yes |
| SOC 2 | Yes | Yes |
| HIPAA | Yes | Yes |
What's the differenceSinch offers Choose region, while Telesign does not.
Data Retention
How long message content and metadata are stored, and whether that is configurable.
| Field | Sinch | Telesign |
|---|---|---|
| Retention policy | Sinch retains message and delivery records to provide the service and meet legal obligations; retention windows for message content are limited and, for some products, configurable via data-processing agreements. | Customer transaction data is retained for 90 days for operational troubleshooting and billing purposes, with full backups maintained across two separate data centers also kept for 90 days. |
What's the differenceSinch: Sinch retains message and delivery records to provide the service and meet legal obligations; retention windows for message content are limited and, for some products, configurable via data-processing agreements. Telesign: Customer transaction data is retained for 90 days for operational troubleshooting and billing purposes, with full backups maintained across two separate data centers also kept for 90 days.
Pricing & Credits
Pricing model and the cost of a first message.
| Field | Sinch | Telesign |
|---|---|---|
| Pricing model | Pay-as-you-go per message with volume and committed-use pricing | Pay-as-you-go per-message/per-transaction pricing with volume-based enterprise contracts; public per-message rates are not transparently listed. |
| SMS starting price | Approx. $0.0075 per US SMS segment (varies by volume; plus carrier fees) | Not published |
| Free developer credit | Yes | Yes |
What's the differenceSinch and Telesign are closely matched on pricing & credits — no material differences in the tracked fields.
Reach & Reliability
Global coverage and delivery dependability.
| Field | Sinch | Telesign |
|---|---|---|
| Countries covered | 150 | 230 |
| Direct operator connections | Yes | Yes |
| Published uptime SLA | 99.95% | No published SLA |
What's the differenceTelesign leads on Countries covered (230 vs 150 for Sinch).
Company & Trust
Independent reviews and company profile.
| Field | Sinch | Telesign |
|---|---|---|
| G2 rating | 4.3 | 4.3 |
| G2 reviews | 150 | 20 |
| Ownership | public | private |
| Employees | 3,000-5,000 | 500-1,000 |
What's the differenceSinch leads on G2 reviews (150 vs 20 for Telesign).
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