Once an airdrop is over, you've got thousands of names, emails, etc.
How do you turn those airdrop claimers into investors?
Or do you only use airdrops to increase the total number of token users?
That is a big database of users. I wont call them as investors because the airdrops of tokens are generally full of the scum of bitcointalk that is the self-proclaimed "Bounty hunters". They make new accounts here everyday just to lay out their palms to every shittoken shitdropping. They consider that as a job and keep on doing it even if they may be worthless.
So I would call that database much less accurate to launch any campaign because its mostly a bunch of people creating a number of alts to join them.
Yes, I do agree that those personal details provided to these airdrops may be fake and users may not even check their emails they receive in those accounts so if someone buying those details for marketing their product may not be worth.