I am trying send email to all user present in DB, I just need to open outlook prompt with the loaded data of emails and Bcc & CC, then user can verify and add points he wants to send then send it.

let EmailTo = "";
    try {
      const GetEmail = await fetch("http://127.0.0.1:8000/XXX/XXX");
      const data = await GetEmail.json();
      console.log("the data avalue");
      console.log(data);
      const Email_Data = data;
      console.log(Email_Data);
      Email_Data.forEach((email) => {
        EmailTo = EmailTo + email.XXX;
      });
    } catch (err) {
      swal({
        title: "Error Fetching Email",
        text: "Error occured while fetching the emails..",
        buttons: "Ok",
        closeOnClickOutside: true,
      });
    }

const EmailCC = "XXXX";
    const Body = "XXXX";
    const Bcc = "XXXXX";
    console.log("email function");
    window.open(
      "mailto:" +
        EmailTo +
        "&cc=" +
        EmailCC +
        "&bcc=" +
        Bcc +
        "&subject=XXXXX&body=" +
        Body
    );
  };