Quick implementation of the SMS gateway into CMS/ERP systems and numerous interfaces
Integrate the Swiss SMS gateway into your software, apps, desktop applications, or websites. This allows you to send text messages to mobile phones worldwide in a flash using our messaging service and reliably receive replies.
In addition, eCall achieves a delivery rate of over 99.9%. Automatic reply SMS messages are also possible. Furthermore, we offer all the necessary SMS APIs for the secure sending of SMS messages.
The eCall gateway offers the following interfaces (APIs):
HTTPS, WebService, SMPP, Email, REST, etc.
Ready to test all features in 2 minutes
You will, of course, receive the necessary SMS messages from our support team free of charge.
What our customers say about eCall
Eventon AG
Samuel Waeny | Project Manager
“Any company or team looking to send SMS messages can rely on eCall to ensure the messages are delivered, thereby enhancing the user experience for their platforms and services. After all, SMS allows you to reach people very quickly compared to email.”
Thousands of customers from a wide variety of industries rely on eCall

How it works and areas of application
Via eCall, you can send SMS messages worldwide to individuals, groups, or machines (A2P) through a gateway. Additionally, 2-Way SMS for bidirectional communication (reply function) is available.
Automated sending and receiving therefore takes place directly from your business software (point-of-sale, bookings, reservations), from your mobile apps, or via your email program email to SMS & SMS to email
eCall and its interfaces explained in simple terms
What is an SMS gateway?
An SMS gateway is an interface that enables companies to send and receive automated SMS messages directly from software applications or IT systems. It connects traditional mobile networks with digital communication systems and is frequently used for notifications, verifications (2FA), customer communication, and marketing campaigns.
Modern SMS gateways like eCall offer the highest delivery rates, GDPR-compliant security, and easy API integration, enabling businesses to make their SMS communications efficient, fast, and reliable. Learn more

Learn how you can optimize your business processes and reduce costs.
Additional option: High Privacy SMS
We developed this optional privacy feature to send sensitive data such as OTPs, security or access codes, passwords, patient data, and banking and insurance information. After delivery to the recipient, eCall also overwrites the message so that it cannot be reconstructed. This makes this feature the ideal complement for confidential to critical content.
Additional Option: SMS Prioritization
Select the “Top Priority” option to send important messages to your recipients in a matter of seconds: for example, security codes to mobile phones as part of an access security solution. Also available as bulk SMS.
Discover even more additional options
here to meet your specific needs.
Your benefits at a glance
- Quality – Send messages with a direct connection to the networks of Switzerland’s top providers. Also via Voice API (text-to-speech messages)
- Security – Data remains in Switzerland at all times
- Reliability – System availability > 99.9%, thanks to redundant gateway infrastructure
- Speed – SMS delivery worldwide in seconds
- Service – Billing via monthly invoice, custom sender numbers
- Easy configuration
Plus, you’ll be ready to try it for free in just 2 minutes!
Here’s where our business messaging solution is used in practice
Web applications, apps, and web portals
Extending functionality to send and receive SMS messages over the internet.
ERP and CRM solutions
Expand functionality by integrating text messaging to optimize your business processes.
Personalized customer communication
Increase customer satisfaction through improved customer service via SMS, including order confirmations, delivery notifications, booking confirmations, pickup reminders, reservation confirmations, appointment reminders, flight information, or taxi orders. We also offer the option to send messages with a custom sender, such as your company name.
Marketing campaigns
Increase revenue thanks to high customer engagement during promotions. Because 98% of all incoming SMS messages are proven to be read very quickly by the recipient. As a result, the response rate is up to 100 times higher than with any other communication channel.
Corporate or organizational communication
Direct and fast communication with employees, suppliers, partners, citizens, members, pupils, or students. The average response time is 90 seconds, compared to 90 minutes for emails. Additionally, you can rent virtual numbers from us to receive replies.
Two-factor authentication
High access security with easy handling via SMS delivery of security codes, one-time passwords, or access codes to mobile phones. Furthermore, 2FA is highly recommended for every login in today’s world. Therefore, it is unfortunately not enough to secure online access with just a username and password.
You might also be interested in:
How does an SMS gateway work? What are its benefits?

Our Pricing Models
We offer various pricing models and customized terms. Let’s discuss a tailored offer that fits your needs. You can also find initial guidance in our pricing overview.

Enhance your business communication with SMS features to keep customers, patients, and employees informed – for example, with appointment reminders.
FAQ eCall SMS Gateway
– HTTP/HTTPS: Ideal for web applications; simple URL requests are sufficient.
– REST API: Modern, flexible, suitable for individual and bulk messaging.
– WebService: Standardised SOAP/SOAP-like interface for system integration.
– SMPP: Direct connection to the SMSC – for extremely fast bulk SMS.
– Email: Mail-to-SMS or SMS-to-Mail via Outlook/Gmail with delivery confirmation.
In addition, as an Official Meta Partner for the WhatsApp Business API, we provide communication solutions for your customers
– Extremely high reliability: system availability of over 99.9%.
– Swiss Made: Development and servers based in Switzerland – high data protection standards and ISO 27001 certification.
– High delivery rate & speed: SMS messages are delivered in Switzerland and globally within seconds.
– Powerful additional features: Priority delivery (Top Priority), High Privacy, automatic deletion of sensitive content after delivery.
– You can sign up in just a few minutes. Sign up ->
– Developers receive free access to all APIs for testing purposes (full functionality, with no setup or licence fees).
– Comprehensive documentation, code examples (C#, VB, cURL, Java, PowerShell) and a test environment are available.
– Marketing: SMS campaigns, competitions, information services (e.g. relevant offers via SMS).
– Customer communication: appointment reminders, reservations, booking confirmations, delivery status, surveys, etc.
– Security: two-factor authentication (access codes, mTAN, OTP), alerts, monitoring.
– Technical alerts, monitoring & alerts: e.g. multi-level alerts for machine faults, escalation until confirmation.
– Performance: Over 99% delivery rate – fast delivery times, reliable shipping.
– Data protection: GDPR and ISO 27001 compliant. Data remains in Switzerland and is stored securely.
– High-privacy SMS: Messages are overwritten after sending – ensuring a high level of security for sensitive content.
– Top-priority delivery: Critical messages receive priority treatment – ideal for safety-critical situations.
– Swiss-made: Certified with the “swiss made software” label
