{
  data: {
    info: {
      user: {
        name: "Hercules",
        password: "Iamthegreatest!"
        email: "hercules@olymp.gr"
      }
    }
  }
}

if (data && data.info && data.info.user && data.info.user.email) {
  var email = data.info.user.email;
}

if (data.info.user.email)
  // do something
}

let data = {
  info: {
    user: {
      email: 'user.email@example.com'
    }
  }
}

_.get(data, 'info.user.email');
// => 'user.email@example.com'

_.get(data, 'info.user.emailAddress', 'default.email@example.com');
// => 'default.email@example.com'