1. How to send an html format email?

Just create an html page with a tool ( Dreamweaver, Frontpage or other) and copy the source codes into the mail content.

2. How to get email address from IE(or Firefox)?

Click the right mouse button on the email address in IE(or Firefox), and select "copy shortcut". The email address will be added automatically to the mail list (please make sure that the "Add Mail" window is open).