[ButlerianJihad]

The people who are celebrities, or public figures, or likely to receive a lot of email, also have secretaries, or PR/social media managers who open all their messages and respond to strangers.

This is why it can be so easy to find someone's contact email address, versus phoning their office and trying to get past the voicemail or front desk.

https://en.wikipedia.org/wiki/Parasocial_interaction

[embedding-shape]

Also, lots of them seemingly read emails themselves, or at least have their secretaries forward emails written by passionate people to them, as I've also gotten replies to a bunch of emails from people I didn't expect such involved reply to, even when they're "celebrities".

[ButlerianJihad]

QED