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
Maybe that is intentional as they wanted to sell your Emails to 3rd party group so Exposing in Spreadsheet will make it clean from their hands if tons of emails sent to our account because they can easily denied and reasoning is you are exposed in the Sheet.
instead of joining bounties with that kind of manager better find others that will protect your privacy and won't take advantage of situation.
This important thing why do you have personal email and secondary email for joining bounty and airdrop. You can hidden with your personal email connected with Facebook account, twitter and Instagram or still connected with exchange account, but you should have secondary email account for joining bounty campaign, when your email show on spreadsheet every day get notification email about airdrop and get fake link to confirm because I ever almost day get the same notification from scammer.