Comparison
Overview
Company snapshot and where each provider is based.
| Field | SMS.to | SMSAPI |
|---|---|---|
| What it is | Omnichannel business messaging platform and API from Cyprus-based Intergo Telecom for sending SMS, Viber, WhatsApp, RCS and Telegram messages worldwide. | A Polish business-messaging platform (a brand of LINK Mobility Poland, part of LINK Mobility Group) offering bulk SMS, MMS, VMS voice, RCS and WhatsApp Business messaging via REST API and a web interface. |
| Founded | 2016 | 2007 |
| Ownership | private | public |
| Employees | 51-200 | 51-200 |
| HQ city | Paphos | Gliwice |
| HQ country | Cyprus (EU) | Poland (EU) |
What's the differenceSMS.to edges ahead on the overall messaging.dev Score (49 vs 44). SMS.to is private and headquartered in Paphos, Cyprus (EU); SMSAPI is public and based in Gliwice, Poland (EU).
Channels
Which messaging channels each provider can send and receive on.
| Field | SMS.to | SMSAPI |
|---|---|---|
| SMS | Yes | Yes |
| MMS | No | Yes |
| RCS | Yes | Yes |
| Yes | Yes | |
| Viber | Yes | No |
| Facebook Messenger | No | No |
| Telegram | Yes | No |
| Apple Messages for Business | No | No |
| Voice | No | Yes |
| No | No |
What's the differenceThey share 3 channels. SMS.to additionally offers Viber, Telegram, while SMSAPI additionally offers MMS, Voice.
Developer Experience
How quickly a developer can sign up and send a first message.
| Field | SMS.to | SMSAPI |
|---|---|---|
| Self-service onboarding | Yes | Yes |
| Free developer credit | Free trial credits on sign-up | Free test SMS on signup |
| Docs quality | med | high |
| Documentation | Open ↗ | Open ↗ |
| SDKs | PHP | PHP, Python, JavaScript, Java, C#, Go, Bash |
| Sandbox / test env | No | Yes |
| API types | REST, SMPP | REST, SMTP |
What's the differenceOn SDKs, SMSAPI adds Python, JavaScript, Java, C#, Go, Bash; SMSAPI offers Sandbox / test env, while SMS.to does not; on API types, SMS.to adds SMPP; SMSAPI adds SMTP.
Data & Compliance
Data residency options and enterprise compliance certifications.
| Field | SMS.to | SMSAPI |
|---|---|---|
| EU data residency | Yes | Yes |
| US data residency | Yes | No |
| Choose region | Yes | No |
| GDPR | Yes | Yes |
| ISO 27001 | Yes | Yes |
| SOC 2 | No | No |
| HIPAA | No | No |
What's the differenceSMS.to offers US data residency, while SMSAPI does not; SMS.to offers Choose region, while SMSAPI does not.
Data Retention
How long message content and metadata are stored, and whether that is configurable.
| Field | SMS.to | SMSAPI |
|---|---|---|
| Retention policy | Customer data is retained only while the account remains open; on an account deletion request all data is deleted within 30 days. Customers can choose to have data processed only within the EU, in which case it is not transferred outside the EU; per-message content retention periods are not publicly documented in detail. | Messages are stored in accordance with applicable law and disclosed only when required by a lawful request; phone numbers are used solely for SMS campaign purposes. No specific retention period is publicly documented. All data is held within the EEA on two redundant data centers in Poland (ATMAN and T-Mobile, over 150 km apart). |
What's the differenceSMS.to: Customer data is retained only while the account remains open; on an account deletion request all data is deleted within 30 days. Customers can choose to have data processed only within the EU, in which case it is not transferred outside the EU; per-message content retention periods are not publicly documented in detail. SMSAPI: Messages are stored in accordance with applicable law and disclosed only when required by a lawful request; phone numbers are used solely for SMS campaign purposes. No specific retention period is publicly documented. All data is held within the EEA on two redundant data centers in Poland (ATMAN and T-Mobile, over 150 km apart).
Pricing & Credits
Pricing model and the cost of a first message.
| Field | SMS.to | SMSAPI |
|---|---|---|
| Pricing model | Prepaid pay-as-you-go credit with no contracts or commitments; per-SMS rates vary by destination and volume discounts are negotiated with sales. | Pay-as-you-go prepaid credit — pay only for sent messages with no setup fee or contract; minimum top-up around €30. |
| SMS starting price | From $0.023 per SMS (advertised base rate; per-country rates via downloadable price list) | From ~€0.04 per SMS (international, varies by destination country) |
| Free developer credit | Free trial credits on sign-up | Free test SMS on signup |
What's the differenceSMS.to and SMSAPI are closely matched on pricing & credits — no material differences in the tracked fields.
Reach & Reliability
Global coverage and delivery dependability.
| Field | SMS.to | SMSAPI |
|---|---|---|
| Countries covered | 0 | 0 |
| Direct operator connections | Yes | No |
| Published uptime SLA | No published SLA (public status page at status.sms.to) | No published SLA |
What's the differenceSMS.to offers Direct operator connections, while SMSAPI does not.
Company & Trust
Independent reviews and company profile.
| Field | SMS.to | SMSAPI |
|---|---|---|
| G2 rating | 4.4 | 0.0 |
| G2 reviews | 4 | 0 |
| Ownership | private | public |
| Employees | 51-200 | 51-200 |
What's the differenceSMS.to leads on G2 rating (4.4 vs 0 for SMSAPI); SMS.to leads on G2 reviews (4 vs 0 for SMSAPI).
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