Gmail now migrates email and contacts from other email providers, including Yahoo!, Hotmail, AOL, and other providers. It’s much easier to make the transition now that you can bring along all your old email and contacts. You can even have your messages forwarded from your old account for 30 days, giving you time to take Gmail for a test drive while you make up your mind.
This new feature is available in all newly-created Gmail accounts, and it is slowly being rolled out to all existing accounts. It’ll take longer than the few hours or days that most Gmail features take to get out to everyone.