Here's how I do it using Google Chrome: 1. Sign in to personal Gmail by going to gmail.google.com 2. Sign in to work Gmail by going to mail.google.com/a/foo.co

Here's how I do it using Google Chrome: 1. Sign in to personal Gmail by going to gmail.google.com 2. Sign in to work Gmail by going to mail.google.com/a/foo.com (obviously, replace foo.com with your work domain)