Comparison
Overview
Company snapshot and where each provider is based.
| Field | Telesign | Twilio |
|---|---|---|
| What it is | Digital identity and programmable communications platform offering SMS, RCS, voice, WhatsApp, Viber and email APIs alongside phone verification and fraud-prevention services. | Customer engagement platform with communications APIs for SMS, voice, email, and more |
| Founded | 2005 | 2008 |
| Ownership | private | public |
| Employees | 500-1,000 | 5,000-6,000 |
| HQ city | Marina del Rey | San Francisco |
| HQ country | USA | USA |
What's the differenceTwilio edges ahead on the overall messaging.dev Score (88 vs 70). Telesign is private and headquartered in Marina del Rey, USA; Twilio is public and based in San Francisco, USA.
Channels
Which messaging channels each provider can send and receive on.
| Field | Telesign | Twilio |
|---|---|---|
| SMS | Yes | Yes |
| MMS | No | Yes |
| RCS | Yes | Yes |
| Yes | Yes | |
| Viber | Yes | No |
| Facebook Messenger | No | No |
| Telegram | No | No |
| Apple Messages for Business | No | No |
| Voice | Yes | Yes |
| Yes | Yes |
What's the differenceThey share 5 channels. Telesign additionally offers Viber, while Twilio additionally offers MMS.
Developer Experience
How quickly a developer can sign up and send a first message.
| Field | Telesign | Twilio |
|---|---|---|
| Self-service onboarding | Yes | Yes |
| Free developer credit | Yes | $15 trial credit |
| Docs quality | high | high |
| Documentation | Open ↗ | Open ↗ |
| SDKs | C#, Java, Node.js, PHP, Python, Ruby | Node.js, Python, PHP, Java, C#, Ruby, Go |
| Sandbox / test env | No | Yes |
| API types | REST | REST, SMTP |
What's the differenceOn SDKs, Twilio adds Go; Twilio offers Sandbox / test env, while Telesign does not; on API types, Twilio adds SMTP.
Data & Compliance
Data residency options and enterprise compliance certifications.
| Field | Telesign | Twilio |
|---|---|---|
| EU data residency | Yes | Yes |
| US data residency | Yes | Yes |
| Choose region | No | Yes |
| GDPR | Yes | Yes |
| ISO 27001 | Yes | Yes |
| SOC 2 | Yes | Yes |
| HIPAA | Yes | Yes |
What's the differenceTwilio offers Choose region, while Telesign does not.
Data Retention
How long message content and metadata are stored, and whether that is configurable.
| Field | Telesign | Twilio |
|---|---|---|
| Retention policy | 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. | Twilio stores message and call records by default; customers can enable message body redaction and configure data retention/deletion for message content. Some metadata is retained for a required period for billing and compliance. |
What's the differenceTelesign: 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. Twilio: Twilio stores message and call records by default; customers can enable message body redaction and configure data retention/deletion for message content. Some metadata is retained for a required period for billing and compliance.
Pricing & Credits
Pricing model and the cost of a first message.
| Field | Telesign | Twilio |
|---|---|---|
| Pricing model | Pay-as-you-go per-message/per-transaction pricing with volume-based enterprise contracts; public per-message rates are not transparently listed. | Pay-as-you-go per message/minute with volume and committed-use discounts |
| SMS starting price | Not published | $0.0079 per US SMS segment (plus carrier fees) |
| Free developer credit | Yes | $15 trial credit |
What's the differenceTelesign and Twilio are closely matched on pricing & credits — no material differences in the tracked fields.
Reach & Reliability
Global coverage and delivery dependability.
| Field | Telesign | Twilio |
|---|---|---|
| Countries covered | 230 | 180 |
| Direct operator connections | Yes | Yes |
| Published uptime SLA | No published SLA | 99.95% (Enterprise Edition) |
What's the differenceTelesign leads on Countries covered (230 vs 180 for Twilio).
Company & Trust
Independent reviews and company profile.
| Field | Telesign | Twilio |
|---|---|---|
| G2 rating | 4.3 | 4.2 |
| G2 reviews | 20 | 700 |
| Ownership | private | public |
| Employees | 500-1,000 | 5,000-6,000 |
What's the differenceTelesign leads on G2 rating (4.3 vs 4.2 for Twilio); Twilio leads on G2 reviews (700 vs 20 for Telesign).
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