Go email example

https://zetcode.com/golang/email-smtp/

package main

import (
    "fmt"
    "log"
    "net/smtp"
)

func main() {

    from := "john.doe@example.com"

    user := "9c1d45eaf7af5b"
    password := "ad62926fa75d0f"

    to := []string{
        "roger.roe@example.com",
    }

    addr := "smtp.mailtrap.io:2525"
    host := "smtp.mailtrap.io"

    msg := []byte("From: john.doe@example.com\r\n" +
        "To: roger.roe@example.com\r\n" +
        "Subject: Test mail\r\n\r\n" +
        "Email body\r\n")

    auth := smtp.PlainAuth("", user, password, host)

    err := smtp.SendMail(addr, auth, from, to, msg)

    if err != nil {
        log.Fatal(err)
    }

    fmt.Println("Email sent successfully")
}