How do I forward all my Gmail email to another account?

Filters in Google's Gmail service are very powerful, but it's not always obvious how to configure one to do exactly what you desire. First off, though, did you read the article Forward selected messages from Gmail?

Let's go through the steps for creating a broad filter here. First off, click on the small Create a filter text link just to the right of the "Search the Web" button near the very top of the Gmail page.

You'll see this:

Click on the screen shot for a larger view

To have the filter apply to all your email, simply specify your own Gmail address as the "To" address. If you get lots of mail from lists where you're not an explicit recipient, you might create additional rules with the list name as the Subject for those specific filters too.

Click on the "Next" button and now you can decide what should happen next:

To have these messages automatically forward to a different address, specify the address adjacent to the "Forward to" box, then either also check "Delete it" if you want the Gmail copy to vanish, or check "Skip the Inbox (Archive it)" if you'd like to keep a copy on Gmail, but archive it so it's not in your Inbox when you sporadically log in.

Done? Click on "Create Filter" and you should be good to go!