There’s not that much free wi-fi in Tokyo, and since everyone is constantly connected with their 3G phones, there’s little need. Unfortunately, that means that it’s hard to get online to check email. Thankfully, Office is a comfortable, laid-back bar/office where you can actually get work done while enjoying a glass, and unlike most other cafes, they have outlets for your laptop, and they don’t mind you using them. If you don’t need to stay so long, you can try convenient Wired Care in Harajuku or Shibuya to check your mail.