Comparison
Overview
Company snapshot and where each provider is based.
| Field | BulkSMS | Telesign |
|---|---|---|
| What it is | Business messaging platform for sending bulk SMS and RCS to mobile networks worldwide via web app, API, and SMPP. | Digital identity and programmable communications platform offering SMS, RCS, voice, WhatsApp, Viber and email APIs alongside phone verification and fraud-prevention services. |
| Founded | 2000 | 2005 |
| Ownership | private | private |
| Employees | 11-50 | 500-1,000 |
| HQ city | Cape Town | Marina del Rey |
| HQ country | South Africa | USA |
What's the differenceTelesign edges ahead on the overall messaging.dev Score (70 vs 43). BulkSMS is private and headquartered in Cape Town, South Africa; Telesign is private and based in Marina del Rey, USA.
Channels
Which messaging channels each provider can send and receive on.
| Field | BulkSMS | Telesign |
|---|---|---|
| SMS | Yes | Yes |
| MMS | No | No |
| RCS | Yes | Yes |
| No | Yes | |
| Viber | No | Yes |
| Facebook Messenger | No | No |
| Telegram | No | No |
| Apple Messages for Business | No | No |
| Voice | No | Yes |
| No | Yes |
What's the differenceThey share 2 channels. Telesign additionally offers WhatsApp, Viber, Voice, Email.
Developer Experience
How quickly a developer can sign up and send a first message.
| Field | BulkSMS | Telesign |
|---|---|---|
| Self-service onboarding | Yes | Yes |
| Free developer credit | 5 free test SMS on signup | Yes |
| Docs quality | med | high |
| Documentation | Open ↗ | Open ↗ |
| SDKs | — | C#, Java, Node.js, PHP, Python, Ruby |
| Sandbox / test env | No | No |
| API types | REST, HTTP, SMPP, SMTP | REST |
What's the differenceOn SDKs, Telesign adds C#, Java, Node.js, PHP, Python, Ruby; on API types, BulkSMS adds HTTP, SMPP, SMTP.
Data & Compliance
Data residency options and enterprise compliance certifications.
| Field | BulkSMS | 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 BulkSMS does not; Telesign offers ISO 27001, while BulkSMS does not; Telesign offers SOC 2, while BulkSMS does not; Telesign offers HIPAA, while BulkSMS does not.
Data Retention
How long message content and metadata are stored, and whether that is configurable.
| Field | BulkSMS | Telesign |
|---|---|---|
| Retention policy | Message data (content and metadata) is retained for 2 years and then automatically deleted from the system. Account/client data is kept for the duration of service use plus about 7 years after termination. EU-related client data is stored in AWS datacentres in Ireland with encryption at rest. | 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 differenceBulkSMS: Message data (content and metadata) is retained for 2 years and then automatically deleted from the system. Account/client data is kept for the duration of service use plus about 7 years after termination. EU-related client data is stored in AWS datacentres in Ireland with encryption at rest. 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 | BulkSMS | Telesign |
|---|---|---|
| Pricing model | Pay-as-you-go prepaid credits: you buy credits and pay per outbound SMS, with per-message rates varying by destination network and country; no monthly, setup, or contract fees. | 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 | Not published (rates shown per destination network via an interactive slider/quote, not a single headline price) | Not published |
| Free developer credit | 5 free test SMS on signup | Yes |
What's the differenceBulkSMS and Telesign are closely matched on pricing & credits — no material differences in the tracked fields.
Reach & Reliability
Global coverage and delivery dependability.
| Field | BulkSMS | Telesign |
|---|---|---|
| Countries covered | 213 | 230 |
| Direct operator connections | No | Yes |
| Published uptime SLA | No published SLA | No published SLA |
What's the differenceTelesign leads on Countries covered (230 vs 213 for BulkSMS); Telesign offers Direct operator connections, while BulkSMS does not.
Company & Trust
Independent reviews and company profile.
| Field | BulkSMS | Telesign |
|---|---|---|
| G2 rating | 4.6 | 4.3 |
| G2 reviews | 266 | 20 |
| Ownership | private | private |
| Employees | 11-50 | 500-1,000 |
What's the differenceBulkSMS leads on G2 rating (4.6 vs 4.3 for Telesign); BulkSMS leads on G2 reviews (266 vs 20 for Telesign).
Still deciding? Read the quickstart guides: