Mail can be sent using two method
● Using mail() function.
● Using PHPMailer & gmail smtp.

---

Steps to send mail using PHPMailer:

Step 1:

Go to github.com(download) to download PHPMailer library. Select Branch 5.2 stable version & Download the zip file.

Step 2:

Now extract the zip files. & copy these three files & paste it in another folder.
1. class.phpmailer
2. class.smtp
3. PHPMailerAutoload

Step 3:

Open PHPMailerAutoload file & replace function __autoload($classname) with function spl_autoload_register($classname)

Step 4:

Write this gmail smtp code to send mail.

<?php


        require 'phpmailer/PHPMailerAutoload.php';
        $mail= new PHPMailer;

        $mail->isSMTP();
        $mail->Host='smtp.gmail.com';
        $mail->Port=587;
        $mail->SMTPAuth=true;
        $mail->SMTPSecure='tls';

        $mail->Username='abcd@gmail.com';
        $mail->Password='abcd@2020';
        $mail->setFrom('abcd@gmail.com');

        $mail->addAddress('xyz@gmail.com');
        $mail->addReplyTo('abcd@gmail.com');

        $mail->isHTML(true);
        $mail->Subject='phpmailer';
        $mail->Body='WElCOME';

        if(!$mail->send())
        {
           echo "mail not sent";
        }
         else
        {
             echo "mail sent Successfully";
           }
             
 ?>  

                              

Step 5:

Go to Manage your google account setting of the email from which you want to send mail->go to Security ->turn off 2 step verification & turn on Less secure app access.

Follow all the above steps. The mail will be sent in 1 or 2 seconds. Now you will be able to send mail faster.

---