People tend to check work email more often than they do personal email. But what do you do if you don’t have someone’s work email address? Use any of the range of tools, such as Rapportive/Connectifier/Clearbit Connect, to predict company emails. Or, if you notice that a company uses a specific format, e.g. FirstName.LastName@Company.com, you can often figure out the email address of the person you want to contact.