The YaCy project was started by and is administered by Michael Christen.
If you send an email, please include the word 'YaCy' in the subject.

If you are having a problem with YaCy that you think other users may also have experienced, please read the YaCy Wiki or address the YaCy community using the German YaCy Forum or the English YaCy Forum before contacting Michael directly.

If you are interested in a professional consultation service, please see the YaCy Services page.