I moved from Netfirms to AWS. This code worked on Netfirms, but I get this error running on AWS:
Can not authenticate to IMAP server: [ALERT] - Can't connect to '{imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX': 1.
$connect_to = '{imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX';
$user = 'myaccount@gmail.com';
$password = 'mypassword';
$mbox = imap_open($connect_to, $user, $password)
or die("Can't connect to '$connect_to': " . print_r(imap_errors()));