SMS Gateway – OPT System

Respecting Your Contacts' Preferences

SMSMobileAPI allows you to easily activate and manage automatic OPT-OUT handling.
If a contact no longer wishes to receive messages from your number, the system ensures their preference is fully respected.

By using the Opt-Out feature, you demonstrate that your communication is responsible, ethical, and respectful of your recipients.

Compliance With International Laws

Many countries require businesses to provide an easy way for individuals to opt out of marketing or informational messages.
Our system helps you comply with local regulations and avoid legal issues by automatically handling opt-out requests.

Hoe het werkt

• The system is fully automated.
• When a contact replies with "STOP", their number is automatically added to your blacklist.
• If the contact sends "START", they will automatically be removed from the blacklist and can receive messages again.
• You can view and manage the list of blacklisted numbers at any time from your dashboard.
• The API will automatically prevent any further SMS from being sent to blacklisted numbers — no manual action required.

Simple, Transparent & 100% Automated

There is nothing to configure on your side. The opt-out logic is already built into the API.
Your contacts have full control over their preferences, and everything is handled behind the scenes.

Whether your messages are sent manually or through automation, the system ensures that SMS are never delivered to someone who has opted out.

Everything is fully automated!

Best Practice: Inform Your Recipients

As the sender, we strongly recommend that you include a short note at the end of your SMS to let your contacts know how to opt out.

For example, you can add: "Reply STOP to unsubscribe."

This not only improves trust and transparency but also helps ensure compliance with international messaging regulations.