In this year’s Mobile Growth Survey, 72% of respondents said they largely rely on push notifications to motivate mobile users to re-engage with the app. Mobile marketers clearly know push notifications are important. But there are two catches:  Only 43% of respondents said that they always or often allow an app’s request for push notifications. 71% of mobile users aged 18 to 34 said that they get annoyed when they get too many app notifications.  Bottom line: Without properly asking…