> For the complete documentation index, see [llms.txt](https://docs.ochats.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ochats.io/module-tutorial/upload-contacts.md).

# Upload contacts

oChats.io has a built-in customer relationship management (CRM) system. You can manage your contacts with built-in tag management system.

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