FBI Suggests Making an E-mail Fortress
One big one to drive home is don’t use public e-mail accounts like [email protected] or abc-com[email protected] Go get yourself a domain so you can have [email protected] We can help you with creating a G Suite account using your own private abc-company.com domain as well.
Use two-factor authentication whenever possible. This means any system and at all times. This makes it nearly impossible to hack your e-mail by requiring not only your password but an ever changing code which only you have access to.
Time to start thinking . o O (How do I secure this from the bad guys!)