Adding additional actions to Automatic Email Follow up Plugin

I noticed that the default installation of this plugin only has a single action at the user level: create new user. Is it possible to add additional actions?

Ideally, I'd like to be able to send automatic emails "before" before some event happens, specifically an expiration of a users Membership controlled by the Membership plugin. This way I could alert my legacy users (who I've had to import into the Membership plugin from a non-Wordpress website) that they need to come to the site, and create a new membership that now gets them setup in the paypal system. It will also provide a way to let me send an email to users to let them know their paypal subscription is set to renew in x number of days.

Thanks,
Michael