I actually did try emailing Tim Cook a few months ago, but I got bounce backs. I tried tim@apple.com and timcook@apple.com but the mailer daemons said the addresses weren't registered. It sounds like a crazy thing to do, but I remembered how Steve Jobs would reply to users' emails and read an article where Tim said he set aside time to read users' emails.[0]

[0] - https://www.inc.com/business-insider/tim-cook-wakes-up-at-4-...