i have installed the free Version. now what i facing for every email there is one extra copy has been displayed by software.every search i found lost of copy of same mail 
https://forum.emclient.com/emclient/topics/found-duplicate-mail/edit
Hello Paresh,
sorry for the late answer, does this issue happen on an Exchange account? Or what mail protocol does your account use?
Regards,
Olivia