Sendgrid

const sendgrid = require('@sendgrid/mail')
sendgrid.setApiKey(process.env.SENDGRID_API_KEY)

export default async (req, res) => {
  let response;

try {
    response = await sendgrid.send({
      to: req.body.to,
      from: req.body.from,
      subject: req.body.subject,
      text: req.body.text
    }).then((response) => {
        console.log(response[0].statusCode)
        console.log(response[0].headers)
      })
      .catch((error) => {
        console.error(error)
      })
  } catch (error) {
    return res.status(error.statusCode || 500).json({ error: error.message });
  }
  return res.status(200).json({ result: response.message });
};

Usage#

1

Create Sendgrid Account

First, create a Sendgrid account. Then, retrieve your API key.

2

Add & Verify Domain

If you want emails to come from your email address, you'll need to add a domain. Don't want this right now? Use the sandbox domain.

3

Add Environment Variables

To securely access the API, we need to include the secret with each request. We also do not want to commit secrets to git. Thus, we should use an environment variable. Learn how to add environment variables in Vercel.