Always maintain three email accounts. The trash one, that you don't care about, another one you use for friends, and a very restricted one you use for business. And never.... ever give out the business one to your young nephews.
email client software is free and easy to set up. Client email software is a program that checks and then downloads your emails to be saved on your local machine so you can have them to look at off line. I use the POP protocol that supposedly takes the email off the host server when received. It takes some configuration.
Remote services like gmail, hotmail, yahoo, etc should only be used for trash or for friends. These messages stay on the email host server forever. This is good and bad, in the sense that you never lose them, but sensitive emails are also saved, forever.
I have been shocked at times, when I looked up old accounts that I still remembered the passwords to and found 20 or so year old emails still there on the host email server.
Once and a while I'll look at the account Century Link set up for me, that I never used. It's amazing that this account... which I never told anyone about is just full of spam. Its a ghost world of machines doing machine stuff for other machines for no apparent reason.
It is incalculable how many Tera bytes are dedicated to email accounts I have abandoned that are just "running on their own." And all of you have those set up accounts whether you know it or not. And these can be subpoenaed as some sort of evidence of wrong doing. Even if you never used the account or even wanted the account in the first place.
There.
Another thing to keep you up at night to think about.