Hi,
Here I will Share with you how to Activate or setup your userspice email server
For All Who Got "Mail ERROR" Message Or "Email verification is not enabled. Please contact the System Administrator"
userspice SMTP Server settings :D
First: Form your Admin Dashboard Go to Email Settings.
And Set up your Gmail SMTP For Free  :)
At Website Name: Type your Site name.
Let "SMTP Server: smtp.gmail.com" As it and "SMTP Port:587".
Other Forms Like Screenshot  ;) 
Save And Test at test page and  forget password page too.
Regards.