” The big news of the day is another batch of Google services that get axed by the company. Among the services this time is Google Sync which will be disabled for the majority of users on January 30, 2013. Google suggests to use CardCav and CalDav as alternatives along with Imap to sync date between devices, and I thought it would be great to demonstrate how you can make use of those  options to synchronize data with the Thunderbird email client. … “ Source: Ghacks.net Address : Sync Google contacts with Thunderbird using CardDav