Sending company-wide emails is a great way to instantly message everyone in your business, but it can also result in "reply-all hell" for many of your employees.

As collaborative email company Contatta points out, email hasn't changed in 20 years, and is responsible for inefficiencies that can be a major drain on productivity.

Their (somewhat self-promotional) infographic below crunches the numbers to show how much time and money can be saved by cutting back on email by just 15 percent.

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