Some pages include clickable email addresses (mailto: links). By default they open in a mail application like Outlook Express. This Chrome extension makes sure they open in Gmail instead (if you don't see the point, take a look at craigslist).
It is a modification of the original Google extension Send from Gmail, but it won't add any extra button to the minimalistic Chrome toolbar. Besides a couple of bugfixes, it adds the ability to open links in a new window. See the extension gallery page for the changelog.
The 'Email this page' feature is optionally available from the right-click menu.
Less is more!
The required fine print: Gmail and Google Apps are trademarks of Google Inc. I am not affiliated with Google.