## Documentation Index

Access the complete documentation index at:
https://www.zoho.com/in/books/kb/llms.txt

Use this file to discover all available documentation pages before proceeding.

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# Is it possible to automatically mark the invoices as sent once they are approved by the users?

 ![](/books/images/ue-resources/llm-utility-menu/sparkle-ai.svg) Explore With AI ![](/books/images/ue-resources/llm-utility-menu/dd-arrow.svg) 

*   [Open in ChatGPT (opens in new tab)](https://chatgpt.com/?prompt=Analyze+the+content+of+https%3A%2F%2Fwww.zoho.com%2Fin%2Fbooks%2Fkb%2Fautomation%2Fautomatically-mark-inv-as-sent.html+and+understand+it+thoroughly+so+I+can+ask+questions+about+it.)
*   [Open in Claude (opens in new tab)](https://claude.ai/new?q=Analyze+the+content+of+https%3A%2F%2Fwww.zoho.com%2Fin%2Fbooks%2Fkb%2Fautomation%2Fautomatically-mark-inv-as-sent.html+and+understand+it+thoroughly+so+I+can+ask+questions+about+it.)
*    ![Copy for LLM](/books/images/ue-resources/llm-utility-menu/copy.svg) Copy for LLM
*    [![View as Markdown](/books/images/ue-resources/llm-utility-menu/md.svg) View as Markdown (opens in new tab)](/in/books/kb/automation/automatically-mark-inv-as-sent.md)

Yes, this is possible using **Custom functions**. Write to us at [support@zohobooks.com](mailto:support@zohobooks.com) for further assistance in setting up the function.

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