"Hello World" for email, using SendGrid with Go.

hello-email.go

// using SendGrid's Go Library
// https://github.com/sendgrid/sendgrid-go
package main
 
import (
    "github.com/sendgrid/sendgrid-go"
)
 
func main() {
    sg := sendgrid.NewSendGridClientWithApiKey("SENDGRID_APIKEY")
 
    message := sendgrid.NewMail()
    message.AddTo("test@sendgrid.com")
    message.SetFrom("you@youremail.com")
    message.SetSubject("Sending with SendGrid is Fun")
    message.SetHTML("and easy to do anywhere, even with Go")
 
    sg.Send(message)
}