Comparison
Overview
Company snapshot and where each provider is based.
| Field | CM.com | seven.io |
|---|---|---|
| What it is | A conversational commerce and customer engagement platform offering business messaging across SMS, RCS, WhatsApp and other channels, plus voice, email and payments, via API and cloud apps. | German CPaaS platform (formerly sms77) providing SMS, RCS, WhatsApp and voice APIs with data processed on German-hosted infrastructure. |
| Founded | 1999 | 2003 |
| Ownership | public | private |
| Employees | 500-1,000 | 2-10 |
| HQ city | Breda | Kiel |
| HQ country | Netherlands (EU) | Germany (EU) |
What's the differenceCM.com edges ahead on the overall messaging.dev Score (58 vs 42). CM.com is public and headquartered in Breda, Netherlands (EU); seven.io is private and based in Kiel, Germany (EU).
Channels
Which messaging channels each provider can send and receive on.
| Field | CM.com | seven.io |
|---|---|---|
| SMS | Yes | Yes |
| MMS | No | No |
| RCS | Yes | Yes |
| Yes | Yes | |
| Viber | Yes | No |
| Facebook Messenger | Yes | No |
| Telegram | Yes | No |
| Apple Messages for Business | Yes | No |
| Voice | Yes | Yes |
| Yes | No |
What's the differenceThey share 4 channels. CM.com additionally offers Viber, Facebook Messenger, Telegram, Apple Messages for Business, Email.
Developer Experience
How quickly a developer can sign up and send a first message.
| Field | CM.com | seven.io |
|---|---|---|
| Self-service onboarding | Yes | Yes |
| Free developer credit | No | €0.50 free test credit |
| Docs quality | high | high |
| Documentation | Open ↗ | Open ↗ |
| SDKs | PHP, Java, Python, .NET, Node.js | PHP, JavaScript, Python, Go, Ruby, .NET, Rust, Kotlin, Elixir, Swift |
| Sandbox / test env | Yes | Yes |
| API types | REST, SMPP | REST, SMPP, SMTP |
What's the differenceOn SDKs, CM.com adds Java, Node.js; seven.io adds JavaScript, Go, Ruby, Rust, Kotlin, Elixir, Swift; on API types, seven.io adds SMTP.
Data & Compliance
Data residency options and enterprise compliance certifications.
| Field | CM.com | seven.io |
|---|---|---|
| EU data residency | Yes | Yes |
| US data residency | No | No |
| Choose region | No | No |
| GDPR | Yes | Yes |
| ISO 27001 | Yes | Yes |
| SOC 2 | No | No |
| HIPAA | No | No |
What's the differenceCM.com and seven.io are closely matched on data & compliance — no material differences in the tracked fields.
Data Retention
How long message content and metadata are stored, and whether that is configurable.
| Field | CM.com | seven.io |
|---|---|---|
| Retention policy | Not publicly documented in detail. CM.com states it hosts data in Europe and holds ISO 27001/27017/27018/27701 certifications; message content and metadata retention are governed by its privacy statement and per-customer data processing agreements rather than a single published fixed retention period. | 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. |
What's the differenceCM.com: Not publicly documented in detail. CM.com states it hosts data in Europe and holds ISO 27001/27017/27018/27701 certifications; message content and metadata retention are governed by its privacy statement and per-customer data processing agreements rather than a single published fixed retention period. seven.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.
Pricing & Credits
Pricing model and the cost of a first message.
| Field | CM.com | seven.io |
|---|---|---|
| Pricing model | Pay-per-use (pay-as-you-go) charged per message with one fixed price per destination country, volume discounts above ~50,000 messages/month, and optional subscription tiers. | Prepaid pay-as-you-go: top up account balance and pay per message sent, with no monthly fee or subscription required for API access. |
| SMS starting price | Not published (per-country pay-per-use pricing requires selecting a region on the pricing page) | €0.075 per SMS (base rate incl. Germany and most EU countries); non-EU rates vary by country |
| Free developer credit | No | €0.50 free test credit |
What's the differenceCM.com and seven.io are closely matched on pricing & credits — no material differences in the tracked fields.
Reach & Reliability
Global coverage and delivery dependability.
| Field | CM.com | seven.io |
|---|---|---|
| Countries covered | 0 | 0 |
| Direct operator connections | Yes | No |
| Published uptime SLA | No published SLA | No published SLA |
What's the differenceCM.com offers Direct operator connections, while seven.io does not.
Company & Trust
Independent reviews and company profile.
| Field | CM.com | seven.io |
|---|---|---|
| G2 rating | 4.8 | 0.0 |
| G2 reviews | 12 | 0 |
| Ownership | public | private |
| Employees | 500-1,000 | 2-10 |
What's the differenceCM.com leads on G2 rating (4.8 vs 0 for seven.io); CM.com leads on G2 reviews (12 vs 0 for seven.io).
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