But some of airdrop didn't accept temp email. That why i am using my 2nd email for every airdrop.
There is no need to create a temporary email when you can create any number of free hotmail/yahoo/gmails or using any other free service that isn't a temporary one. As long as you don't use a business or work email or an email that is connected to some of your private or financial information for bounties and airdrops you should be fine.