One of the simplest safety measures I take is to utilize a generic email address with @gmail.comrather than customized email address @MyCompanyWebsite.com.Why? Because, your company email is a more high-risk target for Hackers. There are two reasons for this (probably more, but I'm not addressing them here).
1. Statistically you're safer using a popular host domain like @yahoo.com, @hotmail.com, @me.com, etc. Simply because there are more of them than the @YourCompanyWebsite.com email addresses. Saved by the numbers.
2. YourName@YourCompanyWebsite.com is a much easier target because they already have two pieces of information about you - your name and your business. With this basic information, they can search and/or purchase all of personal information to steal your identity. Search your Facebook or Twitter page to find your mother's maiden name, your first pet's name, your best friend's name, your favorite TV show, and any other answers to a personal security question. They can pay for a background and credit check to obtain your social security number, your bank accounts, addresses, phone numbers, and your credit history. This is a much more efficient use of their time than to target a random @aol.com account and crack the billion password combinations.
Flawless? No. Professional? Maybe not at first glance, but it does keep my clients' confidential communications much safer. And, that is reason enough.