Email not sent. No errors

[shauryabhatnagar]

trying to send email inside Promise.all using code: Promise.all(newResult) .then((resultsArray) => { let client = new SparkPost(process.env.EMAIL_SMTP_KEY); let emailDetails = { content: { from: "", subject: "", html: mailBody, }, recipients: [{ address: "" }], }; client.transmissions.send(emailDetails, (err, data) => { if (err) { console.log("Whoops! Something went wrong"); console.log(err); } else { console.log("Congrats you can use our client library!"); console.log(data); } }); })