It is not possible to create a second account using exactly the same email address. However, many email providers, including the well known ones as Gmail and Hotmail, enable clients to create aliases for their email address. When you create a second account with the alias, any message we sent out by email will arrive in the same inbox as emails to your regular email address.
Security note: we strongly advise you to enable Two-Factor Authentication (2FA). Without having 2FA enabled, having multiple accounts tied to a single email address will result in two times the damage if your primary email account is compromised.