As part of my online events, all participants should receive various mailings throughout the event. The problem is that I have people who keep registering to the event, and then they should receive the emails that the others had already received so far. How can I re-send a mailing to all participants of an event, excluding all the participants who had already received that mailing in the past?
When composing your mailing use the "Recipients" field to exclude recipients of one or more past mailings. Here's a screenshot of this in action:
Specifically, you would choose one group to include (which can be a smart group based on the event), and several mailings to exclude.