I believe XP was the last OS that came with an email client. When I switched from XP to 7 I switched to Mozilla Thunderbird. It imported all of my old email. It can import your old contacts too but it took us a little time to figure it out. The file containing the contacts had different fields from what Thunderbird was expecting so we had to tell it which fields to import into what.
There are pluses and minuses to Thunderbird, and to Outlook Express which is what I was using before. I can't say as to which one I prefer, but to some extent they both do the job.