<?php
// Uncomment next line if you're not using a dependency loader (such as Composer)
// require_once '<PATH TO>/sendgrid-php.php';
use SendGrid\Mail\From;
use SendGrid\Mail\Mail;
use SendGrid\Mail\Personalization;
use SendGrid\Mail\Subject;
use SendGrid\Mail\To;
$from = new From("test@example.com", "Twilio Sendgrid");
$to = new To(
 "test+test1@example.com",
 "Example User1",
 [
 '-name-' => 'Example User 1'
 ],
 "Example User1 -name-"
 );
$subject = new Subject("Hello from Twilio Sendgrid!");
$plainTextContent = new PlainTextContent(
 "How's it going -name-?"
);
$htmlContent = new HtmlContent(
 "<strong>How's it going -name-?</strong>"
);
$email = new Mail($from, $to, $subject, $plainTextContent, $htmlContent);
$personalization0 = new Personalization();
$personalization0->addTo(new To(
 "test+test2@example.com",
 "Example User2",
 [
 '-name-' => 'Example User 2'
 ],
 "Example User2 -name-"
));
$personalization0->addTo(new To(
 "test+test3@example.com",
 "Example User3",
 [
 '-name-' => 'Example User 3'
 ],
 "Example User3 -name-"
));
$personalization0->setSubject(new Subject("Hello from Twilio Sendgrid!"));
$email->addPersonalization($personalization0);
$personalization1 = new Personalization();
$personalization1->addTo(new To(
 "test+test3@example.com",
 "Example User4",
 [
 '-name-' => 'Example User 4'
 ],
 "Example User4 -name-"
));
$personalization1->addTo(new To(
 "test+test4@example.com",
 "Example User5",
 [
 '-name-' => 'Example User 5'
 ],
 "Example User5 -name-"
));
$personalization1->addFrom(new From(
 "test5@example.com" => "Twilio"
))
$personalization1->setSubject(new Subject("Hello from Twilio!"));
$mail->addPersonalization($personalization1);
$sendgrid = new \SendGrid(getenv('SENDGRID_API_KEY'));
try {
 $response = $sendgrid->send($email);
 print $response->statusCode() . "\n";
 print_r($response->headers());
 print $response->body() . "\n";
} catch (Exception $e) {
 echo 'Caught exception: '. $e->getMessage(). "\n";
}