Realy? You can use metamax in airdrop and bounty? How can you do this while airdrop and bounty asking only MEW for distribution of token? Maybe it is posible but i dont know also how, i use only My ether wallet for bounty and airdrop
They are not asking for MEW, they do ask your Eth address, regardless of the platform you used to generate that. Metamask and MEW are both platforms to view your Eth/Token balances and make transactions. As long as you have your private key, passphrase, or json file you can use any of those.