We would like to create automatic Backups of our MS Teams chat files. Is there a possibility to let Flow access in-chat messages and copy them into an Excel Sheet? I couldn't find any possibility in Flow that allows it to use content outside of Channels.
Well, you could try to achieve this with Flow using Flow as a "Timer" and use Teams actions or Graph API to read Teams messagesn and store in your Excel file. I would recommend here to start a POC to see if this approach works bearing in mind you will need to access all the Teams to be able to make such "backup"