The best about zetapush is that it has very good customer support team who are always ready to help you with any kind of problems they have faced in their daily work or even if there was no problem at all! Nothing bad here so far as I can say but just one thing which i dislike most from this software - its price tag!! It's quite expensive compared other similar softwares available out ther like Pushwoosh etc., So stick only when your budget allows otherwise go ahead else where because not worth paying such amount! Its really easy way too send push notification by using API provided along side package itself rather than having separate server running separately!! As said earlier above everything working fine without issues we had few minor bugs while sending notifications via api (which were fixed immediately) I like its capability to push notifications to mobile applications. I do not like the support team. They are not as well trained as other providers. I wish they had a better knowledge of how to use the software. It works for me. I have been using ZetaPush for a couple of months. I use it to send notifications to users for events. I also use it to send data to a mobile app.