I have found AMZPromoter useful in putting into order my off-Amazon product promotions. It makes the process of designing landing pages and handling e-mail marketing campaigns less difficult; the latter helps to segment potential buyers more successfully. Review collected by and hosted on G2.com.
On the downside, there is no wholesome and more efficient way of performing A/B testing and analyzing data difference. I am not able to run an A/B split test on the landing pages or on the email sequences I show to my audyence. Review collected by and hosted on G2.com.