HI @EMA03356,
@CFernandes has provided the correct direction.
The trigger When an item or a file is modified could only fires when an item has data updated, I have confirmed on my side.
If you want to use a condition to check if the item content has changed > send an email, you could use the “Get changes to an item or file (properties only)” action.
The “Get changes to an item or file (properties only) action” to get the exact set of changes that might have occurred to a list or file.
The action outputs helpful tokens such as “Has Colum Changed:<Column name>” that can be used to filter your flow to just the column(s) you care about.
When you send email, remember to get the user column from the trigger of the dynamic content into the email body.
I have seen the respond you have in this thread, could you please show me the condition how you configure?
It is impossible that the have column changed parameter return false when you have this column updated.