A REST API for business SMS delivery within Germany. Pay per use or choose a flat rate — we tailor the plan to your volume.
No bloated feature list. Just what matters in production: nationwide delivery, traceable sending, clear reports and an endpoint that works.
Send SMS messages to German mobile networks. Delivery times depend on the destination network and whether the recipient's device is reachable.
Infrastructure hosted entirely in German data centres. No data flows outside the EU.
One POST endpoint, a JSON payload and a bearer token. Integrate in under an hour.
Real-time status updates sent back to your endpoint.
Standard GSM or UTF-8. Long messages are concatenated automatically.
Alphanumeric sender ID or short code, in line with German Federal Network Agency requirements.
If you've worked with bloated SMS platforms, you'll appreciate the difference. With us: one token, one POST, one response.
# Send an SMS curl -X POST https://api.acw.gmbh/v1/sms \ -H "Authorization: Bearer YOUR_TOKEN" \ -H "Content-Type: application/json" \ -d '{ "to": "+49170XXXXXXX", "from": "ACW", "text": "Your code is 482931.", "webhook": "https://api.kunde.de/sms-status" }' # Response { "id": "msg_8f3a...", "status": "queued", "to": "+49170XXXXXXX", "created": "2026-05-20T09:00:00Z" }
Three scenarios we handle every day. Have a different use case? Give us a call and we'll take a look.
Security-sensitive and delivery-critical messages, where late or lost delivery is not an option. Routing is prioritised accordingly.
Reminders and status updates that email fails to get across. Low per-message costs and predictable volumes.
Marketing messages with opt-in management and unsubscribe handling. We help configure your setup in line with German Federal Network Agency requirements.
Pricing depends on volume, routing and service level. Let's talk — we usually have a quote ready within 24 hours.
Pay for each SMS sent. No minimum volume or base fee. Ideal for irregular or growing volumes.
A fixed monthly fee for an agreed allowance. Predictable costs for budget-conscious teams or consistent sending volumes.
Privacy and security belong in project planning. The agreed configuration, service providers and contractual terms determine the requirements.
Hosting locations, data flows and service providers must be assessed against your requirements before deployment.
Processing data on your behalf requires an agreement under Article 28 GDPR. Legal bases and deletion periods must be defined for each use case.
Marketing SMS generally requires prior explicit consent unless a statutory exception applies. The sender is responsible for ensuring that messages are sent lawfully.
Encryption and access-control requirements are defined in the technical scope of service.
The service providers involved in delivery must be reviewed for the specific scope of service.
Monitoring, support hours and service levels are governed by the agreement.