Rediffmailpro.com os a paid service. It is costier than the other service providers in this category. One of my friend owns a clothing businesss and opted for rediffmailpro.com to fulfill his business needs. Initially they have provided a good service. After some days he frequently getting issues with it. He alwys needs to contact the customer care service for their assistance. The customer care people used to take 24- 48 hours to resolve the issue. Eventually he lost his profits because of this internal mailing issues. Yes, it is user friendly but it takes too much time to load the content Once after loading the service runs fast.
No matter if the content and informatiion is good, customers need to be satisfied. In our case my friend highly disappointed and changed this mailing service to other service.
I dont recommend RediffMailpro.com