Many people prefer to write an email instead of making a phone call. And for good reason. Emails are an incredibly efficient form of communication. There is no opportunity for a long, rambling chat, and you can check what you have written before pressing 'send'. But an email is sometimes the worst medium for communication. Tone and feeling can be misconstrued, questions can't be answered in real-time, and the opportunity to build a closer relationship is lost. Here are 5 times when it is better to make that call.