Work sheet change event only on pouplated rows

Your description has some contradictions. What do you mean by "row is populated"? What row do you want to check--the row containing the changed cell?

Can you please provide your file with a concrete example of what you want to do? The paper clip icon does not work for attachments. Instead, under the text box where you type your reply click the Go Advanced button. On the next screen scroll down and click on Manage Attachments, which will show a pop-up window to Select and Upload a file. Then close the window.

The second bit of code you provided has a couple of problems. First, it is only checking whether the cell that changed is somewhere in columns A:Z and from row 2 to the last row of existing data. It doesn't address your issue of whether a particular row is populated.

Second, you do not want to disable events. That will cause you all kinds of complications. If you do not want to do the processing in a particular case, just use an If statement or exit the sub. I can be clearer about this once we determine exactly what condition you need to check.