The Tools tab allows you to set up a few optional configurations:
Email Subject Line Override
By default, email message subject line is the event text. You can provide an alternative static subject line if desired, then click on "Save Email Subject".
Leave blank for the standard subject line.
...
Bulk Subscribe
Bulk subscribe users by pasting a list of email addresses and selecting the groups you would like them subscribed to.
...
...
HTML Subscription Widget
This allows you to embed a widget onto your website to allow users to subscribe online via your website.
Select the groups for the HTML widget. After you've selected one or more groups, the widget code will be displayed in the box (see example below):
...