Freedom251 › Transactional SMS Software
seven SMS Gateway API

What seven SMS Gateway API is
seven SMS Gateway API lets applications automate SMS through API requests. It supports sending and receiving messages, including bulk dispatch of thousands of texts, and provides delivery reports on the web or through an API callback. Developers can use REST/HTTP, SMPP, or Mail API interfaces, with listed clients and SDKs for C#, Go, JavaScript, Kotlin, PHP, Python, Ruby, and Swift. Integrations include Zapier, Make, n8n, WordPress, WooCommerce, Slack, and HubSpot. Seven names encryption, IP locks, and blacklists among its security measures and says availability is at least 99.5%. API access and Email2SMS are free with an account, while SMS is usage-charged. Free test credit and non-binding registration are advertised. The Pay-as-you-go SMS plan is €75, paid once, billed per sent SMS; the listed price covers 160 characters, with longer texts charged by parts. Country prices vary and VAT may apply.
Who it suits
It suits shops, start-ups, and medium-sized companies needing automated business messaging. Developers can use its API, web interface, integrations, and SDKs.
What it does well
- Two-way SMS sending and receiving
- Bulk dispatch for thousands of messages
- Delivery reports via web or callback
- REST/HTTP, SMPP, and Mail APIs
- Free API access and Email2SMS
What to know first
- SMS charges apply by usage
- Longer messages use additional SMS parts
- Country prices vary and VAT may apply
- Paid plan listed at €75, paid once
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Pay-as-you-go SMS | Per sent SMS; top up credit balance and pay only for SMS sent. · 160 characters per SMS at listed price · 8 fewer characters per additional SMS part · Unicode: 70 characters per SMS · country prices vary · VAT may apply | €75, paid once |
As seven.io lists them, read 5 Oct 2026. The maker's own page has the final word.
Verdict
seven SMS Gateway API combines automated two-way messaging, bulk delivery, reporting, and several developer interfaces. Its free account features and broad integrations are balanced by usage-based SMS charges and message-part billing.
Facts from seven SMS Gateway API's own pages
- API interfaces
- The developer documentation lists REST/HTTP API, SMPP and Mail API interfaces. · docs.seven.io, 5 Oct 2026
- Availability
- Seven says it guarantees at least 99.5% availability for its SMS Gateway. · seven.io, 5 Oct 2026
- Bulk sending
- The scalable gateway supports sending thousands of SMS at once. · seven.io, 5 Oct 2026
- Delivery reports
- Delivery reports are available on the web or through an API callback. · seven.io, 5 Oct 2026
- Founded
- 2003 · seven.io, 28 Sept 2026
- Free features
- Seven says API access and Email2SMS are included free with each account, with SMS charged by usage. · seven.io, 5 Oct 2026
- Headquarters
- Kiel, Germany · seven.io, 28 Sept 2026
- Integrations
- The integrations directory lists services including Zapier, Make, n8n, WordPress, WooCommerce, Slack and HubSpot. · seven.io, 5 Oct 2026
- Intended customers
- Seven describes serving business messaging needs from small shops to start-ups and medium-sized companies. · seven.io, 5 Oct 2026
- Purpose
- The API automates SMS dispatch from an application using an HTTP request. · seven.io, 5 Oct 2026
- SDKs
- The developer resources list clients or SDKs for C#, Go, JavaScript, Kotlin, PHP, Python, Ruby and Swift. · seven.io, 5 Oct 2026
- Security
- The product page names encryption, IP locks and blacklists among its security measures. · seven.io, 5 Oct 2026
- Test credit
- Seven advertises free test credit and free, non-binding registration. · seven.io, 5 Oct 2026
- Two-way messaging
- The interface supports automated sending and receiving of SMS. · seven.io, 5 Oct 2026
- Usage limits
- The listed price covers a 160-character SMS, and longer messages are charged according to the number of SMS parts sent. · seven.io, 5 Oct 2026
Where seven SMS Gateway API stands on Freedom251
- Transactional SMS Software#14 of 76