netlify functions: sendEmail

.env

POSTMARK_API_KEY=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx

netlify.toml

[build]
  functions = "functions"

[[plugins]]
  package = "@netlify/plugin-emails"

sendEmail.js

const { POSTMARK_API_KEY } = process.env
const serverToken = POSTMARK_API_KEY
let postmark = require("postmark")
let client = new postmark.ServerClient(serverToken);

exports.handler = (event, context, callback) => {
client.sendEmail(
    {
        From: "yourname@youremail.com",
        To: "recipient@anotheremail.com",
        Subject: "test email",
        HtmlBody: "test",
        TextBody: "test"
    }
)
  
callback(null, {
    statusCode: 200,
    body: 'I am on my way !'
})

}