Reading up on IMAP specifications

Currently reading up on the IMAP protocol, as one of my customers is using a server without IMAP support compiled :)

RFC 3501

I will be using a simple INBOX check for failed email notifications (sockets are your best friend). That will allow me  to set a flag for every new user account that is still unconfirmed and used a broken email address for their registration. These accounts can than be verified manually :)

Happy socket = happy customer.

Btw, here is a nice piece of code to quickly parse the email header in PHP

$parsed  = array();


$blocks  = preg_split('/\n\n/', $response['data']);


$lines   = array();


$matches = array();


foreach ($blocks as $i => $block) {

    $parsed[$i] = array();

    $lines = preg_split('/\n(([\w.-]+)\: *((.*\n\s+.+)+|(.*(?:\n))|(.*))?)/',

                        $block, -1, PREG_SPLIT_DELIM_CAPTURE);

    foreach ($lines as $line) {

        if(preg_match('/^\n?([\w.-]+)\: *((.*\n\s+.+)+|(.*(?:\n))|(.*))?$/',

                      $line, $matches)) {

            $parsed[$i][$matches[1]] = preg_replace('/\n +/', ' ',

                                                    trim($matches[2]));

        }

    }

}