mail

type Config struct {
	Host        string        // Mail server host.
	Port        int           // Mail server port.
	Username    string        // Mail server username.
	Password    string        // Mail server password.
	UseTLS      bool          // USE_TLS
	UseSSL      bool          // USE_SSL
	MailFrom    string        // Mail server from address.
	Timeout     time.Duration // Timeout duration for sending email.
	TLSConfig   *tls.Config   // TLS Config
	DefaultAuth smtp.Auth     // Default SMTP Auth
}

type EmailBackend interface {
	Send(e *email.Email) error
}

type OpenableEmailBackend interface {
	Open() error
	IsOpen() bool
	Close() error
}