Post Office is a mail-management extension for Chrome users with multiple accounts on different providers. It allows you to right-click on a mailto: link and bypass your system’s default mail client in favor of a webmail provider. In addition, you can set a default webmail client which can then be toggled on and off by clicking the Post Office icon.
- Yahoo! mail
- Live mail
- Outlook Web Access (enter the URL on the extension’s Options page)