One of the things we need to deal with daily, being a digital agency and all, is to juggle with a good deal of emails; we have people contacting us from Hong Kong, Shanghai, Beijing, Paris, Brussels, Geneva, New York, San Francisco, Washington DC... Keeping track of all of these conversations and making sure you get the maximum of what you send over takes a bit of organization; we've learned to rely on a couple of tools to get the job done.