Downloadable mobile applications for use in management of contact list information including telephone directory information in connection with electronic mail and messaging communication networks; downloadable mobile applications for use in management of contact list information including telephone directory information to filter important contacts that are sorted based on communication patterns, communication frequency, location, and/or calendar agendas; downloadable mobile applications for use in data synchronization; downloadable mobile applications for use in communicating via messaging networks

Electronic data storage in the field of telecommunications, electronic communication, and management of contact list information; electronic storage of messages and data in the field of telecommunications, electronic communication, and management of contact list information; electronic storage services for archiving electronic data in the field of telecommunications, electronic communication, and management of contact list information; platform as a service (PAAS) featuring computer software platforms for use in database management in the field of telecommunications, electronic communication, and management of contact list information; providing an online database comprised of information and data collected through third-party electronic mail and messaging communication networks in the field of telecommunications, electronic communication, and management of contact list information; rental of a database server (to third parties) in the field of telecommunications, electronic communication, and management of contact list information; software as a service (SAAS) services, namely, hosting software for use by others for database management in the field of telecommunications, electronic communication, and management of contact list information