Keeping cookies without using curl's cookie jar files...

Free code...

I am making the code available on github under open source license:
PHP Contacts Importer

Quick Links - Projects

Import Contacts from Yahoo, Gmail, Hotmail, MSN and AOL using PHP and cURL

Contacts Importer .NET (Yahoo, Gmail, Hotmail, MSN address book import) for ASP.NET or Windows Applications

Import Yahoo Addresses (PHP)

Import Gmail Addresses (PHP)

Import Hotmail Addresses (PHP)

Import AOL Addresses (PHP)