Send email using Go (Golang) via GMail with net/smtp

smtp-gmail-send.go

package main

import (
	"log"
	"net/smtp"
)

func main() {
	send("hello there")
}

func send(body string) {
	from := "[email protected]"
	pass := "..."
	to := "[email protected]"

	msg := "From: " + from + "\n" +
		"To: " + to + "\n" +
		"Subject: Hello there\n\n" +
		body

	err := smtp.SendMail("smtp.gmail.com:587",
		smtp.PlainAuth("", from, pass, "smtp.gmail.com"),
		from, []string{to}, []byte(msg))

	if err != nil {
		log.Printf("smtp error: %s", err)
		return
	}
	
	log.Print("sent, visit http://foobarbazz.mailinator.com")
}

upd: this work for me, need add parametr from in msg object
msg := []byte("From: ***@mail.com\r\n" +
"To: ***@gmail.com\r\n" +
"Subject: New Hack\r\n" +
"\r\n" +
"Wonderful solution\r\n")

FYI here's a link to the app passwords: https://myaccount.google.com/apppasswords