Get Email state using codeigniter & sendgrid Webhook - codeigniter-3

Question

I have integrated sendgrid for send mail. I also want to track whether a user has opened the mail and click the link inside the mail or not.
that's why I used sendgrid.
using it I can send mail, but can't track mail states(mail is opened or not, the link is clicked or not).
I tried the below code for sending mail.
function sendMail($toMails, $body, $subject, $ccMails = array(), $bccMails = array()) {
$ci = &get_instance();
if (empty($toName)) {
$toName = $toMails;
}
$sendMail = $ci->config->item('sendMail');
$email = new \SendGrid\Mail\Mail();
$email->setFrom($ci->config->item('from'), "From User name");
$email->setSubject($subject);
$email->addTos($toMails); //for multiple user pass array with emails and names
$email->addCcs($ccMails);
$email->addBccs($bccMails);
$email->addContent("text/html", $body);
$email->setFooter(false, "", "<strong>If you don't want to receive this type of email in the future, please <a href='http://w3schools.com'>Unsubscribe</a>.</strong>");
//$email->setSpamCheck(true, 1, "http://localhost:8081/");
// Tracking Settings
$email->setClickTracking(true, true);
//$email->setOpenTracking(true, true);
$sendgrid = new \SendGrid($ci->config->item('key'));
try {
$response = $sendgrid->send($email);
} catch (Exception $e) {
echo 'Caught exception: ', $e->getMessage(), "\n";
}
if ($sendMail) :
if (!$response->statusCode()) :
_pre($response->headers());
return false;
else :
return true;
endif;
endif;
}
which is working fine, except it is going in the spam.
now below code, I am using to get details as per email id.
$sendgrid = new \SendGrid($this->config->item('key'));
$query_params = json_decode('{"start_date": "2019-10-07","end_date": "2019-10-07","to_email": "cadmin1#getnada.com","subject":"This is a subject test"}');
$response = $sendgrid->client->stats()->get(null, $query_params);
_pre($response->body());
exit;
above code only gives me date wise data, but I also want email id wise.
but in spite of adding a parameter for that, still, I am not getting desired output.
https://sendgrid.com/docs/for-developers/sending-email/getting-started-email-activity-api/#filter-by-recipient-email
I have used the above demo, in that demo, they have used curl but I am using CodeIgniter's way.
I am not sure about sendgrid version that's why I added both version tag, I used API one.
anyone having a proper solution regarding it?

Answer 1

I have implemented webhooks to archive my desire output.
for that need to follow steps as per documentation shows
after that need to create a page from where we can get mails status.
on executing that page it returns data as per activity.
<?php
header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Headers: *');
$data = file_get_contents("php://input");
$events = json_encode($data, true);
$requestData = array('response' => $events);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "<url which we earlier set for webhook as per documentation>");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $requestData);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$server_output = curl_exec($ch);
curl_close($ch);
?>
i have used Curl for getting desire output.