- Should I use 1 email for all or 1 coin?. Eg: 1@1.1 for Bitcoin, 2@2.2 for Ethereum, ... or allinone@email for Bitcoin, Ethereum, ....
- Should I use Gmail or secure email like ProtonMail, Tutanota for coins?
Just as it is safer to use a different password for each account, it is also safer to use a different email and user-name for each account. This applies to all online accounts, and not just cryptocurrency accounts.