We also offer you the option of sending us your email addresses to be compared not in plain text but in encrypted form (SHA-512). Please note that domains can also be entered in the list in accordance with Section 7 ECG. You will also find precise specifications for this in the document, which you can find in the Downloads section.
In order to use the developer interface (REST-API) it is necessary to register as a developer. For this, we ask you to fill out the attached form. After approval by RTR, you will receive a key (API-KEY) by email, which you have to provide with every call.
If your API key can no longer be found, it can be requested again using the email address provided during registration.