FullContact is a cloud-based contact management and backup application that helps individuals and businesses organize, store, and sync their contact information across multiple devices. It allows users to keep their contacts in one place, and keep their contact lists up-to-date by automatically updating the information from their address books, social media accounts, and email applications. It also allows users to back up their contact information in case of accidental deletion or device loss. With FullContact, users can easily organize their contacts into lists, share contact information with others, and even find missing contact information. It also features advanced search capabilities, so users can quickly find a contact they need. FullContact is available on iOS, Android, and web browsers, and can be integrated with a variety of third-party applications.
Google Contacts does not allow synchronization of contacts and their data across multiple email services, only Google's own Gmail.