Windows Mail and/or Outlook Express are not included in Windows 7. You'll need to install a new program. You can download Windows Live Mail , which is Microsoft's latest Email program, for free. Otherwise, I have read that Thunderbird is a good replacement.
If you want the bother, I believe, if you google, you will find some hacks to run Windows Mail in 7.
Then Windows Mail will run and is just as easy to set up as Outlook Express 6.
PS: On one PC, Windows Mail would not run, no matter what magic I tried.
So I installed Mozilla Thunderbird. It's a good replacement for Outlook Express 6.
Easy to set up and easy to use and Very Stable. https://www.mozilla.org/en-US/thunderbird/download
It's only 13.4 megs in size and I just downloaded the latest version is about 20 sec's.
As long as you have a Vista machine, you can copy the contents of the C:\program Files\Windows Mail directory from the Vista machine and replace the files in the C:\Program Files\Windows Mail directory in Windows 7.
You'll need a program called IObit Unlocker to delete the files on the Windows 7 machine.