Integrate LOX24 API for SMS delivery.
- Go to WooCommerce → SMS Settings and select LOX24.
- Log in to LOX24 and go to Settings → API Settings.
- Copy your API Key and sender phone number.
- Paste these into SMS For WooCommerce Settings.
- Save changes.
How to get your LOX24 API Key:

Coverage and sender ID requirements
LOX24 is a Germany-based SMS gateway, with strong coverage and delivery for German and wider EU numbers, plus international routing. Many EU countries require alphanumeric sender IDs to be pre-registered before they can be used for transactional traffic — check LOX24’s sender ID requirements for your target countries before going live.
Test your connection
- In WooCommerce → SMS Settings, click Send Test SMS to confirm LOX24 delivers a message to your own phone.
- If the test fails, check the delivery log in your LOX24 dashboard for the specific error before troubleshooting further.
Troubleshooting
- Messages aren’t delivered: the sender ID isn’t pre-registered or approved for the destination country.
- Authentication error: the API token was regenerated in LOX24 since it was last saved here, or lacks the SMS send scope.
- Send blocked or fails silently: the LOX24 account balance is too low.
- Invalid recipient: the destination number is missing its country code — use full E.164 format (e.g. +14155552671).
More SMS gateway integrations
See every supported provider and how to get its API keys in the SMS Gateways overview.