is there a marketplace or a specific method to get in touch with wallets holding a large number of ENS names? I've already checked their opensea/ens profiles, but no social accounts are connected

You know you can send any wallet address a message via etherscan, if you have the ens you have all the info you need.

Founder of /buildingbears , moderator of /success and /collectorscanyon



yes but how do you know if they will see it? do they get a notif?

Yea they will , or you could send a weth offer most of these entities or people are crypto native people