This is a very good suggestion and every bounty and airdrops participant should create a special email for this purpose.
Additionally never send full scans of documents (KYC) this is never needed, especially for bounties or airdrops.
If they ask for full scans one can be 100% sure is fake and they will sell these documents.
Legit airdrops and bounties need only to confirm identity which is called simple KYC. Any document with picture, name and birth date is mostly enough.
The rest should be covered and stamps or any other text should be added to make these scans useless for selling.
I like that my thread caught a lot of attention and many more members are now aware of identity theft which is ongoing by airdrops and bounties.