sendgrid.php

function sendEmail($to, $subject, $from, $content) {
	$data = "{\"personalizations\": [ { \"to\": [ { \"email\": \"$to\" } ], \"subject\": \"$subject\" } ], \"from\": { \"email\": \"$from\" }, \"content\": [ { \"type\": \"text/plain\", \"value\": \"$content\" } ] }";
	$result = file_get_contents("https://api.sendgrid.com/v3/mail/send", null, stream_context_create(array(
	"http" => array(
    	"method" => "POST",
    	"header" => "Content-Type: application/json" . "\r\n"
. "Content-Length: " . strlen($data) . "\r\n" . "Authorization: Bearer RETRACTED",
    	"content" => $data
  		)
	)));
}