Bounty managers please kindly start hiding emails in your spreadsheet because I always like using new email for bounty participation and I surprised that there are many offer mails in my email account, some are free airdrop some are affiliate marketing offers, I still remember that some people are selling email addresses online, it will be easier for such people to go through bounty spreadsheet and pack the whole email address
Mostly the emails are hidden and I have never faced such a situation yet but if some manager keeps it open in the spreadsheet that is very wrong not only participants will get spam but it also exposes their personal or private contact details which should not happen.