To use it, simply enter your Gmail address and password, then your Outlook.com address and password. (TrueSwitch was actually designed for use with Hotmail, and in fact still refers to that service, but it works just fine with Outlook.) As you'll note in the options section, TrueSwitch can also copy your address book and calendar, which might save you a step later on (see below).

Note that it can take a full day to import all your mail, which will arrive in a new folder (GMAIL_Mail). Thankfully, TrueSwitch preserves all your Gmail labels as well, mapping them to corresponding folders in Outlook.com.

Assuming you don't want to shut the door 100 percent on Gmail, you can configure Outlook.com to send new messages from your Gmail address -- only as needed, of course. Here's how:

1. In Outlook.com, click the icon in the upper-right corner of the screen (it's represented by a small gear icon), then choose .