14)
Separate email for everything.
This is good advice. But again. Imagine a normie doing this. Signing up for a new email address is painful.

Here's a better idea. Set up a free email server for family and friends. Give every account a free domain name. Route every email for one domain to their inbox. Tell them their email address is whateverthefuckyouwantitdoesntmatterlol@theircustomdomain.com

Again. Make it EASY. Just give them a url, a password. And make it easy for them to add it to their phone or existing gmail or whatever (Yea i know, google evilz, etc, but worry about easy first)