- Easy to configure and monitor using web interface.- Can be easily integrated with other tools that provide SMTP connectivity.- Has many useful features which makes it highly customizable. - Good reporting mechanisms can be incorporated in the tool for ease of monitoring your results.I don't think I like any part of this product in particular.- The UI might turn off a newbie who never used such software before. If you are looking an all-in one solution then PMTA could possibly work for you. To manage your Email delivery system as well as to troubleshoot issues.- I had no prior experience in email handling so I benefited from training modules available within the product's documentation.- It made my life easy because it allowed me access everything from a single dashboard. With the help of this software I can check what percentage of the emails sent by our users were actually The best thing about powermta is its ease of use. It's very easy to set up, and it does all that you need it to do without any fuss. I have not found anything I dislike about this system. It's pretty much perfect. I don't know what else there would be to say. This program has been a great help in my business. I've used it in conjunction with other programs such as MailChimp, Constant Contact, and Campaign Monitor.