Compose New Mail
In this section, you can email your subscribers, or specific group’s newsletters, information on conference presentations/locations, updates to your website, etc.
On the left-hand menu under "Mail," you'll find the option to "Compose New Mail."

Fill in the "Email Subject" field, choose an Email Template from the drop-down, select the groups you wish to email and complete the content of the email in "Email Body." Then "Save & Preview" your email. See the screenshot below:

You can also test the email to see how it looks when it is received. Tap the "Save & Test" button and a window (see below) will pop up for you to fill in the fields. Hit "Send" when you're done.

Once you're happy with the preview or test mail, just select the "Send" button. Your email will then be distributed to your chosen subscriber groups.