Appointment Reminders via SMS and WhatsApp – GDPR-Compliant & Automated
With automatic appointment reminders via SMS, RCS, or WhatsApp, you can conveniently notify your customers and patients about upcoming appointments. Fast. Simple. Reliable.
How companies reduce no-shows and improve appointment adherence
With eCall Business Messaging, companies send these reminders automatically via SMS or WhatsApp seamlessly integrated into their existing software. This allows personalized and GDPR-compliant messages to be sent directly to mobile phones quickly, reliably, and user-friendly. As a result, companies reduce no-shows by up to 50 percent, increase appointment attendance, and effortlessly optimize their scheduling.
Virtual mobile numbers also allow companies to receive and process feedback directly from recipients. With WhatsApp appointment reminders, companies further amplify the impact of their messages by incorporating logos, custom images, and other multimedia content, reminders become more personal, modern, and even more effective.
SMS vs. WhatsApp: A Comparison
Appointment reminders via SMS
- Prevent unnecessary revenue loss
Automate SMS reminders: With automatic appointment reminders from eCall, you can reduce the number of missed appointments by up to 50%. This optimizes your appointment management and prevents revenue loss. - Avoid downtime
Every service provider knows the situation: An appointment was scheduled, and the customer doesn’t show up. Thanks to eCall’s automatic SMS appointment reminders, your workday is always fully utilized. - Increase customer satisfaction
For your customers, missing an appointment is often just as frustrating as it is for you. After all, a new appointment must be found and scheduled. With a short SMS, you stay top of mind with the customer and positively influence their satisfaction.
WhatsApp Appointment Reminder
- Sending & Receiving via WhatsApp
You can send and
receive WhatsApp messages via API call (software). - Reach customers directly via WhatsApp
Below are three buttons: Confirm, Request Reschedule, Call. When the customer confirms the appointment, they immediately receive the business’s location (e.g., from Google Maps). If the customer declines the appointment, they receive a message stating that the business will contact them to schedule a new appointment. If they tap Call, they can call the business directly. - Reduce no-shows even more efficiently
Reminders via WhatsApp feel fresh, intuitive, and innovative. In particular, the confirmation feature and the option to call directly help reduce costly no-shows even more efficiently
What our customers say about eCall
Service Ocean
Thomas Addison | Co-Founder and Managing Director
“We were looking for an SMS provider that could send SMS messages. When selecting the SMS service, it was important to us to address the challenges faced by banks and insurance companies. In other words very high data protection compliance and a very high quality standard. We found this with eCall.”
“As a dentist, it’s extremely frustrating when my patients keep misplacing their appointment cards and missing their appointments. This creates extra work for me and costs money. With eCall, I’ve found a simple solution.”
– Dr. med. dent. Daniel Schrieber, Dentist
Interfaces & Integration for SMS and WhatsApp Appointment Reminders
With eCall Business Messaging, companies can send automated appointment reminders via SMS or WhatsApp directly from their existing software. Missed appointments lead to unnecessary and costly downtime. This allows you to remind your clients of an appointment easily and in a timely manner. Your clients’ responses can be easily documented and archived.
Conversely, your clients also benefit from SMS appointment reminders: they feel personally addressed and receive an additional written confirmation of the time and location of the appointment. More info on the interfaces
The following interfaces are available:
- REST API for flexible integration and WhatsApp
- SMPP for high volumes
- HTTP/HTTPS or WebService for fast connection
- Email interface for easy use without programming
- Through our WhatsApp Business Platform as a certified Meta technology provider, WhatsApp can be seamlessly integrated into existing systems, enabling businesses to handle customer service and marketing in an automated, efficient, and legally compliant manner.
Here’s how appointment reminders work with eCall:
- Your software automatically sends the appointment details to eCall.
- Our systems send the reminder as an SMS or WhatsApp message.
- Customers receive the message on time with all relevant information (date, time, location).
- Responses can be answered, documented, and archived directly.
Your benefits:
- Fewer missed appointments and downtime
- Multichannel communication: SMS and WhatsApp
- Higher customer satisfaction through personalized communication
- Automated processes boost efficiency
- Binding confirmation in writing via the customer’s preferred channel
With eCall, appointment reminders via SMS or WhatsApp become a simple, secure, and highly effective tool for optimizing your capacity utilization and sustainably improving your service quality.
Increase customer satisfaction with SMS appointment reminders and reduce no-shows.
Data protection & GDPR compliance in Switzerland
With eCall, you rely on the highest security standards in accordance with both the EU General Data Protection Regulation (GDPR) and the revised Swiss Data Protection Act (revDPA). All personal data is processed exclusively in ISO/IEC 27001-certified Swiss data centers. Appointment reminders sent via SMS, WhatsApp, or RCS are transmitted through secure communication channels and are fully traceable.
Careful handling of sensitive customer data is crucial, particularly in the healthcare and service sectors. eCall meets these requirements and offers the option to use virtual mobile numbers for bidirectional communication in compliance with the GDPR, as well as supporting data protection impact assessments (DPIA) when needed. This ensures you are legally on the safe side today and tomorrow.
Frequently Asked Questions About Appointment Reminders – FAQ
eCall allows you to send automated appointment reminders via SMS or WhatsApp. This message is then sent automatically to your customers either directly from your system or via the eCall platform. You can also receive replies.
Text messages reach their recipients directly, quickly and with a high open rate – usually within minutes. Compared to emails, they are less likely to end up in spam folders and do not require an internet connection. Phone calls are time-consuming, whereas text messages are efficient and can be automated, making them equally suitable for sending appointment cancellation texts.
Yes, eCall complies with the requirements of the GDPR and the revised Swiss Data Protection Act (revDPA). All data is processed in ISO 27001-certified Swiss data centres. Furthermore, consent (opt-ins) can be clearly documented and managed.
Yes, in addition to traditional SMS, eCall also supports the WhatsApp Business API and RCS (as soon as this becomes technically feasible in Switzerland). These channels enable interactive messaging, for example with confirmation buttons or calendar integration. Ideal for modern, mobile customer communication.
You can integrate your existing software via REST API, SMPP, Web Service, HTTPS, the WhatsApp Business Platform or an email interface. This allows appointment reminders to be triggered automatically based on appointment bookings, calendar entries or patient management systems without any manual intervention.
Yes. eCall provides virtual mobile numbers that customers can use to reply to your reminder text messages. You can view responses directly in the web portal or receive them via API or email – for example, for confirmations, cancellations or queries.
Our customers’ experience shows that appointment reminders sent via text message or WhatsApp can reduce no-shows by up to 50%. Because they are direct and personalised, appointments are less likely to be forgotten – and, if necessary, can be cancelled in good time.
Yes, you can try eCall for free. Simply sign up and send your first test messages directly via the web portal – with no setup costs or obligations.
eCall is part of the F24 Group and meets the highest safety standards:
– ISO/IEC 27001 certified
– Hosted exclusively in Switzerland
– GDPR & revDSG compliant
Use cases for SMS appointment reminders
- Patient communication: Reminders in the medical/dental sector
- Confirmations for hair salon appointments
- Garages send reminders for service/repair appointments
- Municipalities provide information about trash collection or cardboard recycling
- Reminders to employees about appointments (service technicians, field staff)
- Pickup reminders for retail orders
- Online check-in reminders
Industries already using our solutions
How to get started – in 3 steps
- Open a free account here in just a few seconds.
- In your account, click on “Interfaces” in the left-hand navigation menu and activate the API of your choice.
- Connect your software or application to eCall. If you need help with this, we’d be happy to hear from you.
If you have any questions, we’re happy to assist you personally.
Phone support
during business hours:
+41 44 787 30 70
Inquiries or support
via email:
Contact us
by fax:
+41 44 787 30 71
