i am using zoomla template 2.5, and also installed some plugin as per my requirement, my site is user based, e-mail  authentication need to be done at the time new user register, but my all the mail are going to spam, due to IP black listed, even we have never use that IP or Domain for mass emailing neither we have violated any regulation. can you help on this or do u provide any services where we can use ur email id for user registration and email go to INBOX instead Spam folder ?