Regardless of your reasoning to want to contact Tribault, use the correct channel. No one with his email would/should send it to you or anyone (neither publicly or privately)
@IamyourFather If you are his father, and he didn't send you flowers on father's day. Then you can appeal using: contact@lichess.org
Same email goes, if you want to be a mod or upgrade you IM title ect. ect.