Google's "targeted-journalist-level" Advanced Protection Program means I don't have to worry about password resets or account recovery stuff on the account.
Though I have lost track of the number of services I didn't have immediate access to since someone signed up using my email address, and reclaiming it can be a battle sometimes. The Apple ID was interesting - but luckily everyone's "first pet's name" was "Fido"... (Seriously... Please validate your emails everyone!!!)
Often, whenever a real mailing address is included I print out the email and send it in a real letter with a friendly (if just a tad passive-aggressive) note inside. But overall I try to do the right thing for important documents and correspondence.
I do shudder to think how many random accounts are just an email-password-reset away from having access though...