> For the complete documentation index, see [llms.txt](https://docs.csml.dev/studio/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.csml.dev/studio/channels/messenger.md).

# Messenger (legacy)

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Due to new limitations by Meta, it is currently impossible to add a new Messenger channel from CSML Studio.
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Messenger is one of the most popular chat platforms, with over 1.3B users worldwide. It is also one of the platforms that democratized the use of chatbots. It has a pretty broad set of APIs and allows for some very rich message templates, which gives it a nice user experience. If you are looking to build a publicly-accessible chatbot, Messenger is definitely a solution to look at!