If you are one of the billion who took 'reducing stress' as this year's resolution, the first thing you should be doing is to turn off the e-mail app on your phone, as per recent research. E-mail can simultaneously be a great communication tool and a source of frustration and stress, the findings showed. In a survey of around 2,000 people, London-based Future Work Centre found that people who automatically receive e-mail on their devices are more likely to report higher levels of e-mail pressure. The study also pointed out that checking e-mail earlier in the morning or later at night is associated with higher levels of email pressure.