The ease of use, customization options available for multiple platforms (iOS/Android), in-app notifications are very useful when it comes time to send out press releases or notify clients about events etc., easy integration with other apps like Slack which makes communications so much easier! I wish there were more customizable templates but this can be easily fixed if you have some programming knowledge by creating your own custom template from scratch using html codes instead - not ideal solution though since we don't always know how many pages our book will end up being before publishing date arrives :) Definitely give them try even without any previous experience they'll get used quickly enough once everything's set properly at first run through because all aspects seem intuitively clear after few minutes spent playing around :). We now receive daily emails regarding new titles added into catalogue along side regular email updates sent via newsletters every month /.