Not Happy with OS X El Capitan? How to Send Feedback to Apple
OS X El Capitan (10.11) is part of an open Public Beta, which means that any user can opt-in to install and run the beta version of the future OS X system software on their Mac. This is a chance for Mac users to help shape the future of OS X, and a great way to do that is by sending feedback directly to Apple through the built-in reporting mechanisms.
Of course, this is a beta, so not everything is smooth sailing, and if you’re running OS X El Capitan and you discover something you either don’t like, a persistent crash, a bug, or some other problem, you should let Apple know by using the built-in reporting tools too.