اتصال به ایمیل‌سرور در برنامه‌های Golang

go get github.com/go-gomail/gomail

MAIL_HOST=smtp.example.com
MAIL_PORT=587
MAIL_USERNAME=your_username
MAIL_PASSWORD=your_password
MAIL_FROM=from@example.com

package main

import (
    "fmt"
    "gopkg.in/gomail.v2"
	"crypto/tls"
	"os"
	"strconv"
	"github.com/joho/godotenv"
)

func main() {

	// Load environment variables from .env file
    err := godotenv.Load(".env")
    if err != nil {
        fmt.Println("Error loading .env file:", err)
        return
    }

    // Convert MAIL_PORT to int
    mailPort, err := strconv.Atoi(os.Getenv("MAIL_PORT"))
    if err != nil {
        fmt.Println("Error converting MAIL_PORT to int:", err)
        return
    }

	// Create a new email message
	m := gomail.NewMessage()
	m.SetHeader("From", os.Getenv("MAIL_FROM"))
	m.SetHeader("To", "email@email.email") // Replace with actual recipient
	m.SetHeader("Subject", "This is a TEST")
	body := "this is really a test"
	m.SetBody("text/plain", body)

    // Create a new dialer
    d := gomail.NewDialer(os.Getenv("MAIL_HOST"), mailPort, os.Getenv("MAIL_USERNAME"), os.Getenv("MAIL_PASSWORD"))
    d.TLSConfig = &tls.Config{InsecureSkipVerify: true}

    // Dial and send the email
    if err := d.DialAndSend(m); err != nil {
        fmt.Println("Error sending email:", err)
    } else {
        fmt.Println("Email sent successfully")
    }
}