How to Test Email using Mailtrap

Project : in this project we will learn how to test email That email is being sent or failed using mailtrap.io

Library: we will use swiftmailer library to send email

Mailtrap : Mailtrap is created for safe email testing in development and staging environments, and is compatible with any PHP framework. You can easily test email functionality, debug and inspect the functionality.

Mailtrap SMTP : To send email we need to have use SMTP We can buy SMTP online, here we will use Mailtrap SMTP configuration for sending email .

Mailtrap SMTP Configuration

Mailtrap will provide all the SMTP configuration details

SMTP Setting: username, password, port, all these we have to use in swiftmailer/phpmailer

index

myproject/index.php

index.php

                
                  <?php include("send.php"); ?>
                  <?php include("common/header.php"); ?>
                  <?php include("common/navbar.php"); ?>
                  <br>
                  <div class="container border w-50 p-2" style="margin-top: 10px;background:#f5f6fa;">
                    <h3 class="rounded bg-primary w-100 p-2 text-white text-center">Send Email</h3>
                      <div class="text-center"><?php echo $success;?><?php echo $error; ?></div>
                        <form method="POST" action="index.php" class="p-2 w-100">
                            <div class="form-group">
                              <label for="name">Full Name:</label>
                              <input type="text" class="form-control" name="fullname" id="fullname" placeholder="Enter Your Full Name">
                            </div>
                            <div class="form-group">
                              <label for="email">Sender Email Address :</label>
                              <input type="email" class="form-control" name="sender_email" id="sender_email" placeholder="Sender: exampl@gmail.com">
                            </div>
                            <div class="form-group">
                              <label for="email">Recipient Email Address :</label>
                              <input type="email" class="form-control" name="recipient_email" id="recipient_email" placeholder="Reciever :exampl@gmail.com">
                            </div>
                            <div class="form-group">
                              <label for="subject">Subject :</label>
                              <input type="text" class="form-control" name="subject" id="subject" placeholder="subject">
                            </div>
                            <div class="form-group">
                              <label for="msg">Message :</label><br>
                              <textarea name="message" id="message" cols="78" rows="3" class="form-control" placeholder="Write Your Message Here"></textarea>
                            </div> 
                            <div class="form-group">
                              <input type="submit" name="send" id="submit" value="Send Email" class="btn btn-primary">
                              <a href="#" class="btn btn-danger float-right">Close</a> 
                            </div>          
                        </form>
                      </div><br>
                  <?php include("common/footer.php"); ?
                
            

Create Database and Table

Create table in database

Create connection with database

myproject/dbcon.php

dbcon.php

    
        $dbhost ="localhost";
        $dbuser ="root";
        $dbpswd ="";
        $dbname ="dbdemo";
        $dbcon= mysqli_connect($dbhost,$dbuser,$dbpswd,$dbname);
        if($dbcon){
            //echo "Connected............!!!";
            return $dbcon;
            exit();
        }else{
            die("Connection failed ? ? ?". mysqli_error($dbcon));
        }
        mysqli_close($dbcon);
    

Process to send email with swiftmailer

myproject/send.php

send.php

              
                <?php include("dbcon.php");
                $success=''; $error='';
                //Vendor is SwiftMailer library
                require_once ('vendor/autoload.php');
                $success=''; $error='';
                if(isset($_POST['send'])){
                    $fullname = filter_var(ucwords( $_POST['fullname']),FILTER_SANITIZE_STRING);
                    $sender_email   = filter_var($_POST['sender_email'],FILTER_SANITIZE_EMAIL);
                    $recipient_email= filter_var($_POST['recipient_email'],FILTER_SANITIZE_EMAIL);
                    $subject  = filter_var($_POST['subject'],FILTER_SANITIZE_STRING);
                    $message  = filter_var($_POST['message'], FILTER_SANITIZE_STRING);
                    if(empty($fullname) || empty($sender_email) || empty($recipient_email) || empty($subject) || empty($message)){
                        $error ="<div class='alert alert-danger'>All the fields are required</div>";
                    }else if (!preg_match("/^[a-zA-Z][a-zA-Z\\s]+$/", $fullname)){
                        return "inavlid_name";
                        $error ="<div class='alert alert-danger'>The email has been failed to send</div>";
                    }else if(!filter_var( $sender_email,FILTER_VALIDATE_EMAIL)) {
                        $error ="<div class='alert alert-danger'>The sender email address is invalid</div>";
                    }else if(!filter_var( $recipient_email,FILTER_VALIDATE_EMAIL)) {
                        $error ="<div class='alert alert-danger'>The recipient email address is invalid</div>";
                    }else if (!preg_match("/^[a-zA-Z][a-zA-Z\\s]+$/", $subject)) {
                        $error ="<div class='alert alert-danger'>Only alphabets are allowed in subject field</div>";
                    }else if (strlen($subject) < 4 ){
                        $error ="<div class='alert alert-danger'>The subject must be minimum 4 characters</div>";
                    }else{         
                      $sql= "INSERT INTO `email` (`fullname`, `sender_email`,`recipient_email`, `subject`, `message`) VALUES('$fullname','$sender_email','$recipient_email','$subject','$message')";
                      $run = mysqli_query($dbcon, $sql);
                      if($run){
                          //=to send email to user
                          $transport = (new Swift_SmtpTransport('smtp.mailtrap.io', 2525))
                            ->setUsername('...........')  // your username of  SMTP from mailtrap
                            ->setPassword('...........'); //password of  SMTP from mailtrap
                          // Create the Mailer using your created Transport
                          $mailer = new Swift_Mailer($transport);
                          // Create a message
                          $body_msg = (new Swift_Message($subject))
                            ->setFrom([$sender_email => $fullname])
                            ->setTo($recipient_email)
                            ->setBody($message, 'text/html');
                          // Send the message
                          $result = $mailer->send($body_msg);
                          if($result){
                              $success="<div class='alert alert-success'><span style='color:green;'>The email has been sent to {$recipient_email}</span></div>";
                          } else {
                              $error="<div class='alert alert-danger'><span style='color:red;'>The email could not be sent !Please check you email address !</span></div>";
                          }
                      }
                    }         
                  }