Since I tried on Evolution of Ubuntu, an email client just like Microsoft Outlook, with PIM (Personal Information Manager) features, allows using IMAP, and allows synchronization. I really like it. So I tried to install Evolution for Windows. However, Evolution for Windows cannot work properly on Windows 7. Then, I need to switch back to Thunderbird. Since I like the feature of PIM and the synchronization with GMail and Google Calendar, I have installed following add-ons: