It would be great if we could add exclusion lists to automated emails, especially for event invitations. For example we have an on-demand webinar that we are adding throughout a nurture workflow but only want to send it to contacts that haven't yet signed up. It is not always possible to create a separate invite workflow as we want to ensure contacts are being contacted in the correct cadence and avoid multiple emails sent on the same day.
At the moment the only option is to add if/then branches in - while this works it takes much longer to add and increases the margin of error