> For the complete documentation index, see [llms.txt](https://yudu-sentinel.gitbook.io/sentinel-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://yudu-sentinel.gitbook.io/sentinel-documentation/system-administration/system-contacts.md).
# System Contacts
Managing External Connections
System Contacts are your external contact list in one safe place. A contact could be supplier or someone visiting for a meeting.
You can manage system contacts just like system users - you can assigned them to Spaces, Groups and send them notifications. They can appear in directories and can respond to system broadcasts.
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Contacts cannot log into the system or accompanying Sentinel Apps.
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#### Contact Types
There are different types of Contacts. It is important to understand the types of Contacts when building your contact list and assigning people to Spaces.
Learn more
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#### Manage Contacts
Contacts can be created and managed in the console, via CSV import or programatically via the API. Find out ways to create and keep track of system contacts.
Manage Contacts
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