Hi @Anonymous ,
I have made a test on my side, it has the smae issue with yous.
I have check the code of the 'Post a message as the Flow bot to a channel' action.
However there is no code about "XXXX used Microsoft Flow to automate this notification".
I am afraid it's the default set of the MS Teams, when you post a message via MS flow.
I am afraid it can't be removed by flow.
Best Regards,
Community Support Team _ Zhongys
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