Comparison
Overview
Company snapshot and where each provider is based.
| Field | SmsManager | Telesign |
|---|---|---|
| What it is | 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. | Digital identity and programmable communications platform offering SMS, RCS, voice, WhatsApp, Viber and email APIs alongside phone verification and fraud-prevention services. |
| Founded | 2011 | 2005 |
| Ownership | private | private |
| Employees | 1-5 | 500-1,000 |
| HQ city | Prague | Marina del Rey |
| HQ country | Czech Republic (EU) | USA |
What's the differenceTelesign edges ahead on the overall messaging.dev Score (70 vs 51). SmsManager is private and headquartered in Prague, Czech Republic (EU); Telesign is private and based in Marina del Rey, USA.
Channels
Which messaging channels each provider can send and receive on.
| Field | SmsManager | Telesign |
|---|---|---|
| SMS | Yes | Yes |
| MMS | No | No |
| RCS | Yes | Yes |
| Yes | Yes | |
| Viber | Yes | Yes |
| Facebook Messenger | No | No |
| Telegram | No | No |
| Apple Messages for Business | Yes | No |
| Voice | No | Yes |
| No | Yes |
What's the differenceThey share 4 channels. SmsManager additionally offers Apple Messages for Business, while Telesign additionally offers Voice, Email.
Developer Experience
How quickly a developer can sign up and send a first message.
| Field | SmsManager | Telesign |
|---|---|---|
| Self-service onboarding | Yes | Yes |
| Free developer credit | Yes | Yes |
| Docs quality | high | high |
| Documentation | Open ↗ | Open ↗ |
| SDKs | JavaScript/TypeScript, PHP | C#, Java, Node.js, PHP, Python, Ruby |
| Sandbox / test env | Yes | No |
| API types | REST | REST |
What's the differenceOn SDKs, SmsManager adds JavaScript/TypeScript; Telesign adds C#, Java, Node.js, Python, Ruby; SmsManager offers Sandbox / test env, while Telesign does not.
Data & Compliance
Data residency options and enterprise compliance certifications.
| Field | SmsManager | Telesign |
|---|---|---|
| EU data residency | Yes | Yes |
| US data residency | No | Yes |
| Choose region | No | No |
| GDPR | Yes | Yes |
| ISO 27001 | No | Yes |
| SOC 2 | No | Yes |
| HIPAA | No | Yes |
What's the differenceTelesign offers US data residency, while SmsManager does not; Telesign offers ISO 27001, while SmsManager does not; Telesign offers SOC 2, while SmsManager does not; Telesign offers HIPAA, while SmsManager does not.
Data Retention
How long message content and metadata are stored, and whether that is configurable.
| Field | SmsManager | Telesign |
|---|---|---|
| Retention policy | 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. | 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 differenceSmsManager: 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. 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 | SmsManager | Telesign |
|---|---|---|
| Pricing model | 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. | 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 | €0.0356 per SMS to the Czech Republic (5,001-10,000 message volume tier; promotional rate €0.032), other destinations priced per country | Not published |
| Free developer credit | Yes | Yes |
What's the differenceSmsManager and Telesign are closely matched on pricing & credits — no material differences in the tracked fields.
Reach & Reliability
Global coverage and delivery dependability.
| Field | SmsManager | Telesign |
|---|---|---|
| Countries covered | 175 | 230 |
| Direct operator connections | Yes | Yes |
| Published uptime SLA | No published SLA (individual SLA agreements available) | No published SLA |
What's the differenceTelesign leads on Countries covered (230 vs 175 for SmsManager).
Company & Trust
Independent reviews and company profile.
| Field | SmsManager | Telesign |
|---|---|---|
| G2 rating | 0.0 | 4.3 |
| G2 reviews | 0 | 20 |
| Ownership | private | private |
| Employees | 1-5 | 500-1,000 |
What's the differenceTelesign leads on G2 rating (4.3 vs 0 for SmsManager); Telesign leads on G2 reviews (20 vs 0 for SmsManager).
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