Suggestion: Send automatic email if user has not posted in X days

From what I can see this plugin has two actions from which you can set automatic emails, creating a new blog, and creating a new user.

Would it be possible to add an action so that you can send out automatic emails if the user has not posted anything in a long time?

Edit:

Whoops, I should learn to search, this feature has been requested here: https://premium.wpmudev.org/forums/topic/feature-suggestion-for-the-follow-up-email-plugin