Comparison
Overview
Company snapshot and where each provider is based.
| Field | seven.io | SMS.to |
|---|---|---|
| What it is | German CPaaS platform (formerly sms77) providing SMS, RCS, WhatsApp and voice APIs with data processed on German-hosted infrastructure. | Omnichannel business messaging platform and API from Cyprus-based Intergo Telecom for sending SMS, Viber, WhatsApp, RCS and Telegram messages worldwide. |
| Founded | 2003 | 2016 |
| Ownership | private | private |
| Employees | 2-10 | 51-200 |
| HQ city | Kiel | Paphos |
| HQ country | Germany (EU) | Cyprus (EU) |
What's the differenceSMS.to edges ahead on the overall messaging.dev Score (49 vs 42). seven.io is private and headquartered in Kiel, Germany (EU); SMS.to is private and based in Paphos, Cyprus (EU).
Channels
Which messaging channels each provider can send and receive on.
| Field | seven.io | SMS.to |
|---|---|---|
| SMS | Yes | Yes |
| MMS | No | No |
| RCS | Yes | Yes |
| Yes | Yes | |
| Viber | No | Yes |
| Facebook Messenger | No | No |
| Telegram | No | Yes |
| Apple Messages for Business | No | No |
| Voice | Yes | No |
| No | No |
What's the differenceThey share 3 channels. seven.io additionally offers Voice, while SMS.to additionally offers Viber, Telegram.
Developer Experience
How quickly a developer can sign up and send a first message.
| Field | seven.io | SMS.to |
|---|---|---|
| Self-service onboarding | Yes | Yes |
| Free developer credit | €0.50 free test credit | Free trial credits on sign-up |
| Docs quality | high | med |
| Documentation | Open ↗ | Open ↗ |
| SDKs | PHP, JavaScript, Python, Go, Ruby, .NET, Rust, Kotlin, Elixir, Swift | PHP |
| Sandbox / test env | Yes | No |
| API types | REST, SMPP, SMTP | REST, SMPP |
What's the differenceOn SDKs, seven.io adds JavaScript, Python, Go, Ruby, .NET, Rust, Kotlin, Elixir, Swift; seven.io offers Sandbox / test env, while SMS.to does not; on API types, seven.io adds SMTP.
Data & Compliance
Data residency options and enterprise compliance certifications.
| Field | seven.io | SMS.to |
|---|---|---|
| EU data residency | Yes | Yes |
| US data residency | No | Yes |
| Choose region | No | Yes |
| GDPR | Yes | Yes |
| ISO 27001 | Yes | Yes |
| SOC 2 | No | No |
| HIPAA | No | No |
What's the differenceSMS.to offers US data residency, while seven.io does not; SMS.to offers Choose region, while seven.io does not.
Data Retention
How long message content and metadata are stored, and whether that is configurable.
| Field | seven.io | SMS.to |
|---|---|---|
| Retention policy | Log files are stored only for the legally required period and subsequently anonymized, following a stated data-minimization principle; exact message-content retention periods are not publicly documented in detail. Processing runs on German/EU infrastructure ("Pure EU Routing") in ISO 27001-certified data centers, with an online-signable DPA available. | 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. |
What's the differenceseven.io: Log files are stored only for the legally required period and subsequently anonymized, following a stated data-minimization principle; exact message-content retention periods are not publicly documented in detail. Processing runs on German/EU infrastructure ("Pure EU Routing") in ISO 27001-certified data centers, with an online-signable DPA available. SMS.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.
Pricing & Credits
Pricing model and the cost of a first message.
| Field | seven.io | SMS.to |
|---|---|---|
| Pricing model | Prepaid pay-as-you-go: top up account balance and pay per message sent, with no monthly fee or subscription required for API access. | Prepaid pay-as-you-go credit with no contracts or commitments; per-SMS rates vary by destination and volume discounts are negotiated with sales. |
| SMS starting price | €0.075 per SMS (base rate incl. Germany and most EU countries); non-EU rates vary by country | From $0.023 per SMS (advertised base rate; per-country rates via downloadable price list) |
| Free developer credit | €0.50 free test credit | Free trial credits on sign-up |
What's the differenceseven.io and SMS.to are closely matched on pricing & credits — no material differences in the tracked fields.
Reach & Reliability
Global coverage and delivery dependability.
| Field | seven.io | SMS.to |
|---|---|---|
| Countries covered | 0 | 0 |
| Direct operator connections | No | Yes |
| Published uptime SLA | No published SLA | No published SLA (public status page at status.sms.to) |
What's the differenceSMS.to offers Direct operator connections, while seven.io does not.
Company & Trust
Independent reviews and company profile.
| Field | seven.io | SMS.to |
|---|---|---|
| G2 rating | 0.0 | 4.4 |
| G2 reviews | 0 | 4 |
| Ownership | private | private |
| Employees | 2-10 | 51-200 |
What's the differenceSMS.to leads on G2 rating (4.4 vs 0 for seven.io); SMS.to leads on G2 reviews (4 vs 0 for seven.io).
Still deciding? Read the quickstart guides: