You can now send an email broadcast directly to any online form that saves a spreadsheet in the system. The online form must contain a form field named either "email" or "emailaddress" and the online form must be set to save a spreadsheet of its submissions.

Once the form has been submitted at least once and the spreadsheet has been populated the online form will appear in the spreadsheet drop down menu of the email broadcast form. Select the name of the online form to send an email to anyone who submitted a valid email address through the form. Continue the email broadcast form as usual.