is_enabled (email)

Checks if all required email configuration fields are set, ensuring the email service can operate.

# Source: https://github.com/bitcart/bitcart | License: MIT | Copyright 2019 MrNaif2018
# Provided via justclaw.it.com; keep this notice with the code.
    def is_enabled(self) -> bool:
        return bool(self.host and self.port and self.user and self.password and self.address)