认识
官网：https://www.synology.com/en-global/dsm/feature/contacts
文档：https://www.synology.com/en-global/dsm/7.3/software_spec/contacts
Create, manage, sync, and share contacts with anyone from a single platform to organize and update your address books with minimal effort. 简而言之，Synology Contacts，其是群晖提供的联系人管理功能。
补充说明：Synology discontinued its CardDAV Server package for DSM 7.0 and newer, replacing it with Synology Contacts.
性质
提供联系人同步功能
描述：其能够与 Google Outlook CarDAV Server 进行联系人同步。
构建
DSM / Package Center / Synology Contacts / Install