SendGrid与联系表单的SMTP集成

Question

I want to use SendGrid SMTP services to send emails from my website's contact form. The submit button on the form just spits out a blank version of my website, with no emails sent to my inbox.

Here's the PHP code:

<?php

require("class.phpmailer.php");
    $mail = new PHPMailer();

    // SMTP & Sendgrid settings
    $mail->IsSMTP();
    $mail->Host = "smtp.sendgrid.net";
    $mail->Port = "465";
    $mail->SMTPAuth = "true";   // Enable SMTP authentication
    $mail->Username = "sendgrid username";
    $mail->Password = "sendgrid password";
    $mail->SMTPSecure = ''; // Enable encryption, 'ssl' also accepted

    // Email headers and body
    $mail->SetFrom("[e-mail]");
    $mail->AddAddress("[e-mail]");

    // Form fields
        $Name = $_POST['Name'];
        $Email = $_POST['Email'];
        $Contact = $_POST['Contact'];
        $Message = $_POST['Message'];


    $mail->Subject  = "Message from yoursite.com";
    $mail->Body     = "You have a new message from your contact form on site.com 
 
 Name: $Name 
 Email: $Email 
 Contact: $Contact 
 Message: $Message";
    $mail->WordWrap = 50;


    if(!$mail->Send()) {
      echo 'Message was not sent.';
      echo 'Mailer error: ' . $mail->ErrorInfo;
    }
    else {
      echo 'Message has been sent.';
    }
header('Location: mywebsite.com');
 ?>

Answer 1

Here's the step-by-step process to send emails using SendGrid API,

• Download the archived SendGrid library from Download Packaged Library. Extract it and put it in your project directory.
• Go to https://app.sendgrid.com/settings/api_keys and create an API key for your account/application.

• Now comes to the coding part. Refactor your code in the following way,

  require_once('sendgrid-php/sendgrid-php.php');
  
  $from = new SendGrid\Email(null, "SENDER'S_EMAIL_ADDRESS");
  $subject = "Hello World from the SendGrid PHP Library!";
  $to = new SendGrid\Email(null, "RECEIVER'S EMAIL ADDRESS");
  $content = new SendGrid\Content("text/plain", "Hello, Email!");
  $mail = new SendGrid\Mail($from, $subject, $to, $content);
  
  $apiKey = 'YOUR_API_KEY';
  $sg = new \SendGrid($apiKey);
  
  $response = $sg->client->mail()->send()->post($mail);
  if($response->statusCode() == 202){
      echo "Email sent successfully";
  }else{
      echo "Email could not be sent";
  }
  

  Don't forget to change SENDER'S_EMAIL_ADDRESS, RECEIVER'S_EMAIL_ADDRESS and YOUR_API_KEY as per your requirement. On top of this, change the subject and body of the email as per your application's requirement.

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Sidenote: In case anything goes wrong in the midway, use the following three response methods for debugging.

echo $response->statusCode();
var_dump($response->headers());
echo $response->body();