I guess I'm doing something wrong (as usual) - I tested SG and sent myself email from Yahoo account, using a made up name. I got it all right (in my Hotmail account), but when I replied I checked the reply at Yahoo and it showed my real address (Hotmail account).
I thought that maybe I didn't check the Mask Reply (although it's the default option) so I checked the other box, and again - same result, my reply (a new one) again showed my real Hotmail account.
Am I doing something wrong?
Thanks for your input.