For some time now, Gmail users have had the ability to “fetch” incoming mail from existing Yahoo!, AOL, Hotmail, etc. accounts but this marks the first time that you can actually migrate your entire inbox to Gmail with just one click.

From Google’s announcement:

“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.”

Again, the new option isn’t quite available to all users yet so go easy on that F5 key if you don’t happen to see it immediately.

Seriously, between this announcement and all of the unique and clever features that are coming out of Gmail Labs nowadays, it seems as though competitors like Microsoft’s Hotmail and AOL Mail won’t ever be able to catch up.