Anyone know a trading journal vendor where you upload your trades and it tells you the MAE, or more specifically, the maximum drawdown experienced during a profitable trade?

Maybe Tradersync? Not 100% sure. I do mine manually with a custom excel spreadsheet and a pivot table. I like the understanding I get from manually reviewing my trades this way.

how would you see your MAE / drawdown for a profitable trade in excel without custom scripts?

I manually log all the trade metrics: entry, exit, target, initial stop, heat taken (MAE) MFE, timeframe, signal, etc.... and then use a pivot table to analyze the information. It helps me set the most profitable target, as well as understand how much heat I take on successful trades. Also, of course, many other insights. Does that make sense? If not, let me know,.