I have been trying to use this software since last 2 years but it never worked properly with my outlook version of windows 10 till now. The support team also did not help me much when i had some issues regarding its functionality. It does work sometimes well though. So far nothing has changed which can be considered as positive point from my side. Don't try if you are new user or just want something free. Go ahead only after proper research about the product. We used it at our workplace where we were required to send emails to clients having sensitive data attached to them.