Autoptimze Cache size warning – turn off email reminders?

Evening @bgbandya;
Most of your questions are answered in Autoptimize’s FAQ actually, except for how to disable the mail being sent. That you can do hooking into AO’s API, using this code snippet:

add_filter('autoptimize_filter_cachecheck_sendmail','__return_false');

hope this clarifies,
frank

Great, so adding that to my child theme functions.php?

If you’re comfortable with that, sure, else use something like the code snippets plugin (which is safer and easier) ??