Click on "Create Message", on the first page you can select what type of mailing you want, any additional mailing lists to include, templates and filters. When you have this set then click on "Submit/Next."

The Next page is where you compose your message. You can also add headers and footers on this page and if you would like you could fetch HTML from a URL. When your message is composed click on "Preview Message" at the bottom of the screen.

The last page allows you to preview the way your message looks before sending your mailing out. If you are satisfied with how your message looks then click on the red "Send Now" button at the bottom of the screen.

Below the "Send Now" button there are options to "Go Back to Editing", "Save for Later", "Save and Continue", and "Send Test Email".